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

// Copyright 2009 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.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// 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-capture", () => {
    assertEquals(true, /(x)?\1y/.test("y"));
    assertEquals(["y", undefined], /(x)?\1y/.exec("y"));
    assertEquals(["y", undefined], /(x)?y/.exec("y"));
    assertEquals(["y", undefined], "y".match(/(x)?\1y/));
    assertEquals(["y", undefined], "y".match(/(x)?y/));
    assertEquals(["y"], "y".match(/(x)?\1y/g));
    assertEquals(["", undefined, ""], "y".split(/(x)?\1y/));
    assertEquals(["", undefined, ""], "y".split(/(x)?y/));
    assertEquals(0, "y".search(/(x)?\1y/));
    assertEquals("z", "y".replace(/(x)?\1y/, "z"));
    assertEquals("", "y".replace(/(x)?y/, "$1"));
    assertEquals(
        "undefined",
        "y".replace(/(x)?\1y/, function ($0, $1) {
            return String($1);
        })
    );
    assertEquals(
        "undefined",
        "y".replace(/(x)?y/, function ($0, $1) {
            return String($1);
        })
    );
    assertEquals(
        "undefined",
        "y".replace(/(x)?y/, function ($0, $1) {
            return $1;
        })
    );

    // See https://bugzilla.mozilla.org/show_bug.cgi?id=476146
    assertEquals(["bbc", "b"], /^(b+|a){1,2}?bc/.exec("bbc"));
    assertEquals(["bbaa", "a", "", "a"], /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba"));

    // From crbug.com/128821 - don't hang:
    "".match(
        /((a|i|A|I|u|o|U|O)(s|c|b|c|d|f|g|h|j|k|l|m|n|p|q|r|s|t|v|w|x|y|z|B|C|D|F|G|H|J|K|L|M|N|P|Q|R|S|T|V|W|X|Y|Z)*) de\/da([.,!?\s]|$)/
    );
});