ladybird/Tests/LibJS/Runtime/3rdparty/v8/regexp-multiline.js

// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
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// V8 assertion compatibility shim for Ladybird's test-js harness

function assertEquals(expected, actual, msg) {
    if (Array.isArray(expected) && Array.isArray(actual)) {
        expect(actual).toEqual(expected);
    } else if (expected instanceof RegExp && actual instanceof RegExp) {
        expect(actual.source).toBe(expected.source);
        expect(actual.flags).toBe(expected.flags);
    } else if (expected !== null && typeof expected === "object" && actual !== null && typeof actual === "object") {
        expect(actual).toEqual(expected);
    } else {
        expect(actual).toBe(expected);
    }
}

function assertTrue(val, msg) {
    expect(val).toBeTrue();
}

function assertFalse(val, msg) {
    expect(val).toBeFalse();
}

function assertNull(val, msg) {
    expect(val).toBeNull();
}

function assertNotNull(val, msg) {
    expect(val).not.toBeNull();
}

function assertThrows(fn, type_opt, msg_opt) {
    if (typeof fn === "string") {
        expect(() => eval(fn)).toThrow();
    } else {
        expect(fn).toThrow();
    }
}

function assertDoesNotThrow(fn, msg) {
    if (typeof fn === "string") {
        eval(fn);
    } else {
        fn();
    }
}

function assertInstanceof(val, type, msg) {
    expect(val instanceof type).toBeTrue();
}

function assertUnreachable(msg) {
    expect().fail("unreachable" + (msg ? ": " + msg : ""));
}

function assertEarlyError(code) {
    assertThrows(() => new Function(code));
}

function assertThrowsAtRuntime(code, type_opt) {
    const f = new Function(code);
    assertThrows(f, type_opt);
}

function assertArrayEquals(expected, actual) {
    expect(actual).toEqual(expected);
}

test("regexp-multiline", () => {
    /**
     * @fileoverview Check that various regexp constructs work as intended.
     * Particularly those regexps that use ^ and $.
     */

    assertTrue(/^bar/.test("bar"));
    assertTrue(/^bar/.test("bar\nfoo"));
    assertFalse(/^bar/.test("foo\nbar"));
    assertTrue(/^bar/m.test("bar"));
    assertTrue(/^bar/m.test("bar\nfoo"));
    assertTrue(/^bar/m.test("foo\nbar"));

    assertTrue(/bar$/.test("bar"));
    assertFalse(/bar$/.test("bar\nfoo"));
    assertTrue(/bar$/.test("foo\nbar"));
    assertTrue(/bar$/m.test("bar"));
    assertTrue(/bar$/m.test("bar\nfoo"));
    assertTrue(/bar$/m.test("foo\nbar"));

    assertFalse(/^bxr/.test("bar"));
    assertFalse(/^bxr/.test("bar\nfoo"));
    assertFalse(/^bxr/m.test("bar"));
    assertFalse(/^bxr/m.test("bar\nfoo"));
    assertFalse(/^bxr/m.test("foo\nbar"));

    assertFalse(/bxr$/.test("bar"));
    assertFalse(/bxr$/.test("foo\nbar"));
    assertFalse(/bxr$/m.test("bar"));
    assertFalse(/bxr$/m.test("bar\nfoo"));
    assertFalse(/bxr$/m.test("foo\nbar"));

    assertTrue(/^.*$/.test(""));
    assertTrue(/^.*$/.test("foo"));
    assertFalse(/^.*$/.test("\n"));
    assertTrue(/^.*$/m.test("\n"));

    assertTrue(/^[\s]*$/.test(" "));
    assertTrue(/^[\s]*$/.test("\n"));

    assertTrue(/^[^]*$/.test(""));
    assertTrue(/^[^]*$/.test("foo"));
    assertTrue(/^[^]*$/.test("\n"));

    assertTrue(/^([()\s]|.)*$/.test("()\n()"));
    assertTrue(/^([()\n]|.)*$/.test("()\n()"));
    assertFalse(/^([()]|.)*$/.test("()\n()"));
    assertTrue(/^([()]|.)*$/m.test("()\n()"));
    assertTrue(/^([()]|.)*$/m.test("()\n"));
    assertTrue(/^[()]*$/m.test("()\n."));

    assertTrue(/^[\].]*$/.test("...]..."));

    function check_case(lc, uc) {
        var a = new RegExp("^" + lc + "$");
        assertFalse(a.test(uc));
        a = new RegExp("^" + lc + "$", "i");
        assertTrue(a.test(uc));

        var A = new RegExp("^" + uc + "$");
        assertFalse(A.test(lc));
        A = new RegExp("^" + uc + "$", "i");
        assertTrue(A.test(lc));

        a = new RegExp("^[" + lc + "]$");
        assertFalse(a.test(uc));
        a = new RegExp("^[" + lc + "]$", "i");
        assertTrue(a.test(uc));

        A = new RegExp("^[" + uc + "]$");
        assertFalse(A.test(lc));
        A = new RegExp("^[" + uc + "]$", "i");
        assertTrue(A.test(lc));
    }

    check_case("a", "A");
    // Aring
    check_case(String.fromCharCode(229), String.fromCharCode(197));
    // Russian G
    check_case(String.fromCharCode(0x413), String.fromCharCode(0x433));

    assertThrows("a = new RegExp('[z-a]');");
});