ladybird/Tests/LibJS/Runtime/3rdparty/v8/regexp-indexof.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.
//
// 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-indexof", () => {
    function CheckMatch(re, str, matches) {
        assertEquals(matches.length > 0, re.test(str));
        var result = str.match(re);
        if (matches.length > 0) {
            assertEquals(matches.length, result.length);
            var lastExpected;
            var lastFrom;
            var lastLength;
            for (var idx = 0; idx < matches.length; idx++) {
                var from = matches[idx][0];
                var length = matches[idx][1];
                var expected = str.substr(from, length);
                var name = str + "[" + from + ".." + (from + length) + "]";
                assertEquals(expected, result[idx], name);
                if (re.global || idx == 0) {
                    lastExpected = expected;
                    lastFrom = from;
                    lastLength = length;
                }
            }
            assertEquals(lastExpected, RegExp.lastMatch, "lastMatch");
            assertEquals(str.substr(0, lastFrom), RegExp.leftContext, "leftContext");
            assertEquals(str.substr(lastFrom + lastLength), RegExp.rightContext, "rightContext");
        } else {
            assertTrue(result === null);
        }
    }

    CheckMatch(/abc/, "xxxabcxxxabcxxx", [[3, 3]]);
    CheckMatch(/abc/g, "xxxabcxxxabcxxx", [
        [3, 3],
        [9, 3],
    ]);
    CheckMatch(/abc/, "xxxabababcxxxabcxxx", [[7, 3]]);
    CheckMatch(/abc/g, "abcabcabc", [
        [0, 3],
        [3, 3],
        [6, 3],
    ]);
    CheckMatch(/aba/g, "ababababa", [
        [0, 3],
        [4, 3],
    ]);
    CheckMatch(/foo/g, "ofooofoooofofooofo", [
        [1, 3],
        [5, 3],
        [12, 3],
    ]);
    CheckMatch(/foobarbaz/, "xx", []);
    CheckMatch(new RegExp(""), "xxx", [[0, 0]]);
    CheckMatch(/abc/, "abababa", []);

    assertEquals("xxxdefxxxdefxxx", "xxxabcxxxabcxxx".replace(/abc/g, "def"));
    assertEquals("o-o-oofo-ofo", "ofooofoooofofooofo".replace(/foo/g, "-"));
    assertEquals("deded", "deded".replace(/x/g, "-"));
    assertEquals("-a-b-c-d-e-f-", "abcdef".replace(new RegExp("", "g"), "-"));

    CheckMatch(/a(.)/, "xyzzyabxyzzzyacxyzzy", [
        [5, 2],
        [6, 1],
    ]);
    CheckMatch(/a(.)/g, "xyzzyabxyzzyacxyzzy", [
        [5, 2],
        [12, 2],
    ]);

    CheckMatch(/a|(?:)/g, "aba", [
        [0, 1],
        [1, 0],
        [2, 1],
        [3, 0],
    ]);
    CheckMatch(/a|(?:)/g, "baba", [
        [0, 0],
        [1, 1],
        [2, 0],
        [3, 1],
        [4, 0],
    ]);
    CheckMatch(/a|(?:)/g, "bab", [
        [0, 0],
        [1, 1],
        [2, 0],
        [3, 0],
    ]);
});