add runtime/test.el — El test framework with assertions and runner
Provides assert_true/false, assert_eq, assert_int_eq, assert_neq, assert_contains, assert_starts_with, assert_ends_with, and fail. Test cases are registered by name+fn_name, executed sequentially via the thread/dlsym dispatch mechanism, with results tracked in state_. Includes tests/runtime/string_test.el covering all 23 string.el exports.
This commit is contained in:
Will Anderson
+320
@@ -0,0 +1,320 @@
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// runtime/test.el — El test framework: assertions, registration, and runner.
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//
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// Provides a minimal but complete test harness for El programs. No external
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// dependencies. Written entirely in El using existing runtime primitives.
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//
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// ── Quick-start ──────────────────────────────────────────────────────────────
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//
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// 1. Write a test function with the standard test signature:
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//
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// fn test_str_eq_works(_: String) -> String {
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// assert_true(str_eq("a", "a"), "same strings are equal")
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// assert_false(str_eq("a", "b"), "different strings are not equal")
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// return ""
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// }
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//
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// 2. Register it and run:
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//
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// fn main() -> Void {
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// test_case("str_eq works", "test_str_eq_works")
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// test_run_all()
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// }
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//
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// Test functions must have the signature (String) -> String. The argument is
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// a dummy passed by the threading mechanism (see runtime/thread.el) and should
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// be ignored. The return value is likewise ignored — results flow through the
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// state-based assertion primitives.
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//
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// ── State keys ───────────────────────────────────────────────────────────────
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//
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// _test_cases JSON array of {"name":"...","fn":"..."}
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// _test_pass_count Int as string — total passing assertions
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// _test_fail_count Int as string — total failing assertions
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// _test_failures JSON array of failure message strings
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// _test_current Name of the test case currently executing
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//
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// ── Dependencies ─────────────────────────────────────────────────────────────
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//
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// runtime/string.el — str_eq, str_concat, str_contains, int_to_str, ...
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// runtime/state.el — state_set, state_get
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// runtime/json.el — json_array_len, json_array_get_string, json_get,
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// json_escape_string
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// runtime/thread.el — spawn, join (for dynamic dispatch via dlsym)
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// ── Internal: JSON array helpers ─────────────────────────────────────────────
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//
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// _test_json_append — append a quoted, escaped string element to a JSON array.
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//
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// Given an existing JSON array string (e.g. '["a","b"]') and a plain string
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// value, returns a new array with the value appended (e.g. '["a","b","c"]').
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//
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// The array must be non-empty — always init with "[]" before calling.
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fn _test_json_append(arr: String, val: String) -> String {
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let escaped: String = json_escape_string(val)
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let inner: String = str_slice(arr, 1, str_len(arr) - 1)
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if str_eq(inner, "") {
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return "[\"" + escaped + "\"]"
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}
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return "[" + inner + ",\"" + escaped + "\"]"
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}
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// _test_json_obj_append — append a raw JSON object string to a JSON array.
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//
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// Used to build the _test_cases list where each element is already a
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// JSON object (not a plain string).
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fn _test_json_obj_append(arr: String, obj: String) -> String {
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let inner: String = str_slice(arr, 1, str_len(arr) - 1)
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if str_eq(inner, "") {
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return "[" + obj + "]"
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}
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return "[" + inner + "," + obj + "]"
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}
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// ── Test registration ─────────────────────────────────────────────────────────
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// test_case — register a named test case.
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//
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// name: Human-readable test case name (shown in output).
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// fn_name: Name of a top-level El function with signature
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// (String) -> String. The function should call assertion
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// primitives from this module. The String arg it receives is ""
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// and its return value is ignored.
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//
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// Test cases are stored in the _test_cases state key and executed in
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// registration order by test_run_all().
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fn test_case(name: String, fn_name: String) {
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let arr: String = state_get("_test_cases")
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if str_eq(arr, "") { arr = "[]" }
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let escaped_name: String = json_escape_string(name)
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let escaped_fn: String = json_escape_string(fn_name)
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let obj: String = "{\"name\":\"" + escaped_name + "\",\"fn\":\"" + escaped_fn + "\"}"
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let arr = _test_json_obj_append(arr, obj)
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state_set("_test_cases", arr)
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}
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// ── Test state helpers ────────────────────────────────────────────────────────
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// _test_init — reset all test counters and failure lists.
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//
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// Called at the start of test_run_all(). Safe to call multiple times.
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fn _test_init() {
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state_set("_test_pass_count", "0")
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state_set("_test_fail_count", "0")
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state_set("_test_failures", "[]")
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state_set("_test_current", "")
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}
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// _test_inc_pass — increment the global pass counter by 1.
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fn _test_inc_pass() {
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let n: Int = str_to_int(state_get("_test_pass_count"))
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state_set("_test_pass_count", int_to_str(n + 1))
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}
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// _test_inc_fail — increment the global fail counter by 1.
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fn _test_inc_fail() {
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let n: Int = str_to_int(state_get("_test_fail_count"))
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state_set("_test_fail_count", int_to_str(n + 1))
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}
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// test_pass — record a passing assertion for the current test case.
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//
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// Increments the pass counter. Called internally by assertions.
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fn test_pass(name: String) {
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_test_inc_pass()
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}
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// test_fail — record a failing assertion for the current test case.
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//
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// name: assertion label or description (usually the msg parameter)
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// msg: detailed failure message including expected/got values
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//
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// Increments the fail counter and appends the message to _test_failures.
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// Also prints the failure immediately for visibility.
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fn test_fail(name: String, msg: String) {
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_test_inc_fail()
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let failures: String = state_get("_test_failures")
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if str_eq(failures, "") { failures = "[]" }
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let entry: String = " " + msg
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let failures = _test_json_append(failures, entry)
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state_set("_test_failures", failures)
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println(" FAIL: " + msg)
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}
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// ── Assertions ────────────────────────────────────────────────────────────────
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// assert_true — assert that condition is true.
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//
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// condition: the boolean value to test
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// msg: description shown on failure
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fn assert_true(condition: Bool, msg: String) {
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if condition {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": expected true, got false")
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}
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// assert_false — assert that condition is false.
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//
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// condition: the boolean value to test
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// msg: description shown on failure
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fn assert_false(condition: Bool, msg: String) {
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if !condition {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": expected false, got true")
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}
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// assert_eq — assert that two strings are equal.
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//
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// a, b: strings to compare
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// msg: description shown on failure (quoted values appended automatically)
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fn assert_eq(a: String, b: String, msg: String) {
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if str_eq(a, b) {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": expected \"" + b + "\", got \"" + a + "\"")
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}
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// assert_int_eq — assert that two integers are equal.
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//
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// a, b: integers to compare
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// msg: description shown on failure
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fn assert_int_eq(a: Int, b: Int, msg: String) {
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if a == b {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": expected " + int_to_str(b) + ", got " + int_to_str(a))
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}
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// assert_neq — assert that two strings are NOT equal.
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//
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// a, b: strings to compare
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// msg: description shown on failure
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fn assert_neq(a: String, b: String, msg: String) {
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if !str_eq(a, b) {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": expected values to differ, but both are \"" + a + "\"")
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}
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// assert_contains — assert that string s contains substring sub.
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//
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// s: haystack string
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// sub: needle substring
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// msg: description shown on failure
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fn assert_contains(s: String, sub: String, msg: String) {
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if str_contains(s, sub) {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": \"" + s + "\" does not contain \"" + sub + "\"")
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}
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// assert_starts_with — assert that string s starts with prefix.
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//
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// s: string to inspect
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// prefix: expected prefix
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// msg: description shown on failure
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fn assert_starts_with(s: String, prefix: String, msg: String) {
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if str_starts_with(s, prefix) {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": \"" + s + "\" does not start with \"" + prefix + "\"")
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}
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// assert_ends_with — assert that string s ends with suffix.
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//
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// s: string to inspect
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// suffix: expected suffix
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// msg: description shown on failure
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fn assert_ends_with(s: String, suffix: String, msg: String) {
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if str_ends_with(s, suffix) {
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test_pass(msg)
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return
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}
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg + ": \"" + s + "\" does not end with \"" + suffix + "\"")
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}
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// fail — unconditional test failure.
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//
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// msg: failure message shown in output
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//
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// Use when a code path that must not be reached is reached, or when an
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// expected exception did not occur.
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fn fail(msg: String) {
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let test_name: String = state_get("_test_current")
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test_fail(msg, "[" + test_name + "] " + msg)
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}
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// ── Runner ────────────────────────────────────────────────────────────────────
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// _test_run_one — execute a single registered test case by name.
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//
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// name: the human-readable test case name (set as _test_current)
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// fn_name: the El function to invoke via the thread mechanism
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//
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// Sets _test_current so that assertions inside the test function know which
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// test they belong to. Spawns and immediately joins the test function in a
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// child thread (same dlsym mechanism as parallel_map) so dynamic dispatch
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// works without needing closures.
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fn _test_run_one(name: String, fn_name: String) {
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state_set("_test_current", name)
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let before_fail: Int = str_to_int(state_get("_test_fail_count"))
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let tid: Int = __thread_create(fn_name, "")
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__thread_join(tid)
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let after_fail: Int = str_to_int(state_get("_test_fail_count"))
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if after_fail == before_fail {
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println("[test] " + name + " ... PASS")
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} else {
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println("[test] " + name + " ... FAIL")
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}
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}
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// test_run_all — execute all registered test cases and print a summary.
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//
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// Iterates through every test case registered via test_case(), runs each one,
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// prints per-test PASS/FAIL status, then prints a summary line.
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//
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// Returns the total number of failing assertions. Exit with this value to
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// signal CI failure:
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//
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// fn main() -> Int {
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// test_case("str_eq", "test_str_eq")
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// return test_run_all()
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// }
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fn test_run_all() -> Int {
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_test_init()
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let cases: String = state_get("_test_cases")
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if str_eq(cases, "") { cases = "[]" }
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let n: Int = json_array_len(cases)
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let i: Int = 0
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while i < n {
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let entry: String = json_array_get(cases, i)
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let name: String = json_get(entry, "name")
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let fn_name: String = json_get(entry, "fn")
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_test_run_one(name, fn_name)
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i = i + 1
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}
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let pass_count: Int = str_to_int(state_get("_test_pass_count"))
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let fail_count: Int = str_to_int(state_get("_test_fail_count"))
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println("[test] Summary: " + int_to_str(pass_count) + " passed, " + int_to_str(fail_count) + " failed")
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return fail_count
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}
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@@ -0,0 +1,341 @@
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// tests/runtime/string_test.el — Test suite for runtime/string.el
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//
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// Exercises every public function exported by runtime/string.el using the
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// runtime/test.el framework. Each test function covers one string primitive
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// or a tight family of related functions.
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//
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// ── Build and run ────────────────────────────────────────────────────────────
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//
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// # Combine runtime modules + test framework + this file, then compile:
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// cat runtime/string.el runtime/math.el runtime/state.el runtime/env.el \
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// runtime/fs.el runtime/exec.el runtime/time.el runtime/json.el \
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// runtime/http.el runtime/engram.el runtime/thread.el \
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// runtime/test.el \
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// tests/runtime/string_test.el > /tmp/string_test_combined.el
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//
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// ./dist/platform/elc /tmp/string_test_combined.el > /tmp/string_test.c
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// cc -std=c11 -I el-compiler/runtime -lcurl -lpthread \
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// -o /tmp/string_test /tmp/string_test.c el-compiler/runtime/el_seed.c
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// /tmp/string_test; echo "exit: $?"
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//
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// Exit code equals the number of failing assertions (0 = all pass).
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//
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// ── Coverage ─────────────────────────────────────────────────────────────────
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//
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// str_eq str_neq (via assert_neq)
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// str_len str_concat
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// str_starts_with str_ends_with
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// str_contains str_index_of
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// str_slice str_replace
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// str_to_upper str_to_lower
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// str_trim str_lstrip / str_rstrip
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// str_split str_join
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// int_to_str str_to_int
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// str_repeat str_reverse
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// str_count
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// ── str_eq ────────────────────────────────────────────────────────────────────
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fn test_str_eq(_: String) -> String {
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assert_true(str_eq("hello", "hello"), "identical strings are equal")
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assert_false(str_eq("hello", "world"), "different strings are not equal")
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assert_true(str_eq("", ""), "empty strings are equal")
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assert_false(str_eq("a", ""), "non-empty vs empty is not equal")
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assert_false(str_eq("", "a"), "empty vs non-empty is not equal")
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assert_false(str_eq("Hello", "hello"), "case-sensitive comparison")
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return ""
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}
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// ── str_len ───────────────────────────────────────────────────────────────────
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fn test_str_len(_: String) -> String {
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assert_int_eq(str_len(""), 0, "empty string has length 0")
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assert_int_eq(str_len("a"), 1, "single char has length 1")
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assert_int_eq(str_len("hello"), 5, "hello has length 5")
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assert_int_eq(str_len("hello world"), 11, "space included in length")
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return ""
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}
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// ── str_concat ────────────────────────────────────────────────────────────────
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fn test_str_concat(_: String) -> String {
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assert_eq(str_concat("hello", " world"), "hello world", "basic concat")
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assert_eq(str_concat("", "world"), "world", "empty prefix")
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assert_eq(str_concat("hello", ""), "hello", "empty suffix")
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assert_eq(str_concat("", ""), "", "both empty")
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return ""
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}
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// ── str_starts_with ───────────────────────────────────────────────────────────
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fn test_str_starts_with(_: String) -> String {
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assert_true(str_starts_with("hello world", "hello"), "prefix present")
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assert_false(str_starts_with("hello world", "world"), "not a prefix")
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assert_true(str_starts_with("hello", "hello"), "string is its own prefix")
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assert_true(str_starts_with("hello", ""), "empty prefix always true")
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assert_false(str_starts_with("", "a"), "empty string has no prefix")
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assert_false(str_starts_with("hi", "hello"), "prefix longer than string")
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return ""
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}
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// ── str_ends_with ─────────────────────────────────────────────────────────────
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fn test_str_ends_with(_: String) -> String {
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assert_true(str_ends_with("hello world", "world"), "suffix present")
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assert_false(str_ends_with("hello world", "hello"), "not a suffix")
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assert_true(str_ends_with("hello", "hello"), "string is its own suffix")
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assert_true(str_ends_with("hello", ""), "empty suffix always true")
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assert_false(str_ends_with("", "a"), "empty string has no suffix")
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assert_false(str_ends_with("hi", "world"), "suffix longer than string")
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return ""
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}
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// ── str_contains ─────────────────────────────────────────────────────────────
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fn test_str_contains(_: String) -> String {
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assert_true(str_contains("hello world", "world"), "contains at end")
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assert_true(str_contains("hello world", "hello"), "contains at start")
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assert_true(str_contains("hello world", "lo wo"), "contains in middle")
|
||||
assert_false(str_contains("hello world", "xyz"), "not contained")
|
||||
assert_true(str_contains("hello", ""), "empty sub always contained")
|
||||
assert_false(str_contains("", "a"), "empty string contains nothing")
|
||||
assert_true(str_contains("hello", "hello"), "string contains itself")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_index_of ─────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_index_of(_: String) -> String {
|
||||
assert_int_eq(str_index_of("hello world", "world"), 6, "index of suffix")
|
||||
assert_int_eq(str_index_of("hello world", "hello"), 0, "index of prefix")
|
||||
assert_int_eq(str_index_of("hello world", "o"), 4, "index of first occurrence")
|
||||
assert_int_eq(str_index_of("hello world", "xyz"), -1, "not found returns -1")
|
||||
assert_int_eq(str_index_of("hello", ""), 0, "empty sub returns 0")
|
||||
assert_int_eq(str_index_of("", "a"), -1, "search in empty string")
|
||||
assert_int_eq(str_index_of("aababc", "ab"), 1, "finds first occurrence")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_replace ───────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_replace(_: String) -> String {
|
||||
assert_eq(str_replace("hello world", "world", "there"), "hello there", "basic replace")
|
||||
assert_eq(str_replace("aaa", "a", "b"), "bbb", "replace all occurrences")
|
||||
assert_eq(str_replace("hello", "xyz", "abc"), "hello", "no match is identity")
|
||||
assert_eq(str_replace("", "a", "b"), "", "empty string unchanged")
|
||||
assert_eq(str_replace("hello", "", "x"), "hello", "empty from is identity")
|
||||
assert_eq(str_replace("hello hello", "hello", "bye"), "bye bye", "replace multiple")
|
||||
assert_eq(str_replace("aXbXc", "X", "-"), "a-b-c", "single-char delimiter")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_slice ─────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_slice(_: String) -> String {
|
||||
assert_eq(str_slice("hello world", 0, 5), "hello", "slice from start")
|
||||
assert_eq(str_slice("hello world", 6, 11), "world", "slice from middle")
|
||||
assert_eq(str_slice("hello world", 0, 0), "", "zero-length slice")
|
||||
assert_eq(str_slice("hello", 0, 100), "hello", "end beyond length clamped")
|
||||
assert_eq(str_slice("hello", 3, 3), "", "start == end is empty")
|
||||
assert_eq(str_slice("hello world", 2, 7), "llo w", "interior slice")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_to_upper / str_to_lower ──────────────────────────────────────────────
|
||||
|
||||
fn test_str_to_upper(_: String) -> String {
|
||||
assert_eq(str_to_upper("hello"), "HELLO", "lowercase to uppercase")
|
||||
assert_eq(str_to_upper("HELLO"), "HELLO", "already uppercase unchanged")
|
||||
assert_eq(str_to_upper("Hello World"), "HELLO WORLD", "mixed case")
|
||||
assert_eq(str_to_upper(""), "", "empty string unchanged")
|
||||
assert_eq(str_to_upper("hello123"), "HELLO123", "digits unchanged")
|
||||
return ""
|
||||
}
|
||||
|
||||
fn test_str_to_lower(_: String) -> String {
|
||||
assert_eq(str_to_lower("HELLO"), "hello", "uppercase to lowercase")
|
||||
assert_eq(str_to_lower("hello"), "hello", "already lowercase unchanged")
|
||||
assert_eq(str_to_lower("Hello World"), "hello world", "mixed case")
|
||||
assert_eq(str_to_lower(""), "", "empty string unchanged")
|
||||
assert_eq(str_to_lower("HELLO123"), "hello123", "digits unchanged")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_trim ─────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_trim(_: String) -> String {
|
||||
assert_eq(str_trim(" hello "), "hello", "trims spaces both sides")
|
||||
assert_eq(str_trim("hello"), "hello", "no whitespace unchanged")
|
||||
assert_eq(str_trim(" "), "", "all-space string becomes empty")
|
||||
assert_eq(str_trim(""), "", "empty string unchanged")
|
||||
assert_eq(str_trim("\t hello \n"), "hello", "trims tabs and newlines")
|
||||
assert_eq(str_trim(" hello world "), "hello world", "internal spaces preserved")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_split ─────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_split(_: String) -> String {
|
||||
let parts: [String] = str_split("a,b,c", ",")
|
||||
assert_int_eq(el_list_len(parts), 3, "split yields 3 parts")
|
||||
assert_eq(el_list_get(parts, 0), "a", "first part is a")
|
||||
assert_eq(el_list_get(parts, 1), "b", "second part is b")
|
||||
assert_eq(el_list_get(parts, 2), "c", "third part is c")
|
||||
|
||||
let single: [String] = str_split("hello", ",")
|
||||
assert_int_eq(el_list_len(single), 1, "no sep found yields 1 part")
|
||||
assert_eq(el_list_get(single, 0), "hello", "single part is the full string")
|
||||
|
||||
let trailing: [String] = str_split("a,b,", ",")
|
||||
assert_int_eq(el_list_len(trailing), 3, "trailing sep yields empty last element")
|
||||
assert_eq(el_list_get(trailing, 2), "", "last element is empty")
|
||||
|
||||
let empty_str: [String] = str_split("", ",")
|
||||
assert_int_eq(el_list_len(empty_str), 1, "splitting empty string yields one empty element")
|
||||
|
||||
let multi: [String] = str_split("one::two::three", "::")
|
||||
assert_int_eq(el_list_len(multi), 3, "multi-char separator works")
|
||||
assert_eq(el_list_get(multi, 0), "one", "multi-sep first part")
|
||||
assert_eq(el_list_get(multi, 2), "three", "multi-sep last part")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_join ─────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_join(_: String) -> String {
|
||||
let parts: [String] = el_list_empty()
|
||||
let parts = el_list_append(parts, "a")
|
||||
let parts = el_list_append(parts, "b")
|
||||
let parts = el_list_append(parts, "c")
|
||||
assert_eq(str_join(parts, ","), "a,b,c", "basic join with comma")
|
||||
assert_eq(str_join(parts, ""), "abc", "join with empty separator")
|
||||
assert_eq(str_join(parts, " | "), "a | b | c", "join with multi-char sep")
|
||||
|
||||
let empty_list: [String] = el_list_empty()
|
||||
assert_eq(str_join(empty_list, ","), "", "joining empty list yields empty string")
|
||||
|
||||
let one: [String] = el_list_empty()
|
||||
let one = el_list_append(one, "solo")
|
||||
assert_eq(str_join(one, ","), "solo", "joining single element yields that element")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── int_to_str / str_to_int ──────────────────────────────────────────────────
|
||||
|
||||
fn test_int_to_str(_: String) -> String {
|
||||
assert_eq(int_to_str(0), "0", "zero")
|
||||
assert_eq(int_to_str(42), "42", "positive integer")
|
||||
assert_eq(int_to_str(-1), "-1", "negative integer")
|
||||
assert_eq(int_to_str(1000000), "1000000", "large integer")
|
||||
return ""
|
||||
}
|
||||
|
||||
fn test_str_to_int(_: String) -> String {
|
||||
assert_int_eq(str_to_int("0"), 0, "zero")
|
||||
assert_int_eq(str_to_int("42"), 42, "positive integer")
|
||||
assert_int_eq(str_to_int("-1"), -1, "negative integer")
|
||||
assert_int_eq(str_to_int("1000000"), 1000000, "large integer")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_repeat ────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_repeat(_: String) -> String {
|
||||
assert_eq(str_repeat("ab", 3), "ababab", "repeat 3 times")
|
||||
assert_eq(str_repeat("x", 1), "x", "repeat once")
|
||||
assert_eq(str_repeat("x", 0), "", "repeat zero times yields empty")
|
||||
assert_eq(str_repeat("", 5), "", "repeating empty string yields empty")
|
||||
assert_eq(str_repeat("-", 4), "----", "single char repeat")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_reverse ───────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_reverse(_: String) -> String {
|
||||
assert_eq(str_reverse("hello"), "olleh", "basic reverse")
|
||||
assert_eq(str_reverse("a"), "a", "single char is its own reverse")
|
||||
assert_eq(str_reverse(""), "", "empty string reverses to empty")
|
||||
assert_eq(str_reverse("abcd"), "dcba", "even-length reverse")
|
||||
assert_eq(str_reverse("racecar"), "racecar", "palindrome is unchanged")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_count ─────────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_count(_: String) -> String {
|
||||
assert_int_eq(str_count("hello world hello", "hello"), 2, "two occurrences")
|
||||
assert_int_eq(str_count("aaa", "a"), 3, "adjacent single chars")
|
||||
assert_int_eq(str_count("aaa", "aa"), 1, "non-overlapping: one match")
|
||||
assert_int_eq(str_count("hello", "xyz"), 0, "no match")
|
||||
assert_int_eq(str_count("", "a"), 0, "empty string has no occurrences")
|
||||
assert_int_eq(str_count("hello", ""), 0, "empty sub returns 0")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_strip_prefix / str_strip_suffix ───────────────────────────────────────
|
||||
|
||||
fn test_str_strip_prefix(_: String) -> String {
|
||||
assert_eq(str_strip_prefix("foobar", "foo"), "bar", "strips matching prefix")
|
||||
assert_eq(str_strip_prefix("foobar", "baz"), "foobar", "no-match is identity")
|
||||
assert_eq(str_strip_prefix("hello", ""), "hello", "empty prefix is identity")
|
||||
assert_eq(str_strip_prefix("hello", "hello"), "", "full match yields empty")
|
||||
return ""
|
||||
}
|
||||
|
||||
fn test_str_strip_suffix(_: String) -> String {
|
||||
assert_eq(str_strip_suffix("hello.md", ".md"), "hello", "strips matching suffix")
|
||||
assert_eq(str_strip_suffix("hello.md", ".txt"), "hello.md", "no-match is identity")
|
||||
assert_eq(str_strip_suffix("hello", ""), "hello", "empty suffix is identity")
|
||||
assert_eq(str_strip_suffix("hello", "hello"), "", "full match yields empty")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_find_chars ────────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_find_chars(_: String) -> String {
|
||||
assert_int_eq(str_find_chars("hello world", " "), 5, "finds space at index 5")
|
||||
assert_int_eq(str_find_chars("hello", "xyz"), -1, "not found returns -1")
|
||||
assert_int_eq(str_find_chars("hello", ""), -1, "empty charset returns -1")
|
||||
assert_int_eq(str_find_chars("hello", "aeiou"), 1, "finds first vowel at index 1")
|
||||
assert_int_eq(str_find_chars("", "a"), -1, "search in empty string returns -1")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── str_last_index_of ─────────────────────────────────────────────────────────
|
||||
|
||||
fn test_str_last_index_of(_: String) -> String {
|
||||
assert_int_eq(str_last_index_of("hello hello", "hello"), 6, "last occurrence")
|
||||
assert_int_eq(str_last_index_of("hello", "hello"), 0, "single occurrence")
|
||||
assert_int_eq(str_last_index_of("hello", "xyz"), -1, "not found returns -1")
|
||||
assert_int_eq(str_last_index_of("aababc", "ab"), 3, "last ab in aababc")
|
||||
return ""
|
||||
}
|
||||
|
||||
// ── Entry point ───────────────────────────────────────────────────────────────
|
||||
|
||||
fn main() -> Int {
|
||||
test_case("str_eq", "test_str_eq")
|
||||
test_case("str_len", "test_str_len")
|
||||
test_case("str_concat", "test_str_concat")
|
||||
test_case("str_starts_with", "test_str_starts_with")
|
||||
test_case("str_ends_with", "test_str_ends_with")
|
||||
test_case("str_contains", "test_str_contains")
|
||||
test_case("str_index_of", "test_str_index_of")
|
||||
test_case("str_replace", "test_str_replace")
|
||||
test_case("str_slice", "test_str_slice")
|
||||
test_case("str_to_upper", "test_str_to_upper")
|
||||
test_case("str_to_lower", "test_str_to_lower")
|
||||
test_case("str_trim", "test_str_trim")
|
||||
test_case("str_split", "test_str_split")
|
||||
test_case("str_join", "test_str_join")
|
||||
test_case("int_to_str", "test_int_to_str")
|
||||
test_case("str_to_int", "test_str_to_int")
|
||||
test_case("str_repeat", "test_str_repeat")
|
||||
test_case("str_reverse", "test_str_reverse")
|
||||
test_case("str_count", "test_str_count")
|
||||
test_case("str_strip_prefix", "test_str_strip_prefix")
|
||||
test_case("str_strip_suffix", "test_str_strip_suffix")
|
||||
test_case("str_find_chars", "test_str_find_chars")
|
||||
test_case("str_last_index_of", "test_str_last_index_of")
|
||||
return test_run_all()
|
||||
}
|
||||
Reference in New Issue
Block a user