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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var nodeAssert = require('assert');
var ourAssert = require('./');
var keys = Object.keys;
if (process.env.TEST_NATIVE === true) {
  tests(nodeAssert, 'node assert');
} else {
  tests(ourAssert, 'our assert');
}

function makeBlock(f) {
  var args = Array.prototype.slice.call(arguments, 1);
  return function() {
    return f.apply(this, args);
  };
}

function tests (assert, what) {
    test('assert.ok', function () {
      assert.throws(makeBlock(assert, false), assert.AssertionError, 'ok(false)');

      assert.doesNotThrow(makeBlock(assert, true), assert.AssertionError, 'ok(true)');

      assert.doesNotThrow(makeBlock(assert, 'test', 'ok(\'test\')'));

      assert.throws(makeBlock(assert.ok, false),
                    assert.AssertionError, 'ok(false)');

      assert.doesNotThrow(makeBlock(assert.ok, true),
                          assert.AssertionError, 'ok(true)');

      assert.doesNotThrow(makeBlock(assert.ok, 'test'), 'ok(\'test\')');
    });

    test('assert.equal', function () {
      assert.throws(makeBlock(assert.equal, true, false), assert.AssertionError, 'equal');

      assert.doesNotThrow(makeBlock(assert.equal, null, null), 'equal');

      assert.doesNotThrow(makeBlock(assert.equal, undefined, undefined), 'equal');

      assert.doesNotThrow(makeBlock(assert.equal, null, undefined), 'equal');

      assert.doesNotThrow(makeBlock(assert.equal, true, true), 'equal');

      assert.doesNotThrow(makeBlock(assert.equal, 2, '2'), 'equal');

      assert.doesNotThrow(makeBlock(assert.notEqual, true, false), 'notEqual');

      assert.throws(makeBlock(assert.notEqual, true, true),
                    assert.AssertionError, 'notEqual');
    });

    test('assert.strictEqual', function () {
      assert.throws(makeBlock(assert.strictEqual, 2, '2'),
                    assert.AssertionError, 'strictEqual');

      assert.throws(makeBlock(assert.strictEqual, null, undefined),
                    assert.AssertionError, 'strictEqual');

      assert.doesNotThrow(makeBlock(assert.notStrictEqual, 2, '2'), 'notStrictEqual');
    });

    test('assert.deepStrictEqual', function () {
      assert.throws(makeBlock(assert.deepStrictEqual, [2], ['2']),
                    assert.AssertionError, 'deepStrictEqual');

      assert.throws(makeBlock(assert.deepStrictEqual, [null], [undefined]),
                    assert.AssertionError, 'deepStrictEqual');

      assert.doesNotThrow(makeBlock(assert.notDeepStrictEqual, [2], ['2']), 'notDeepStrictEqual');
    });

    test('assert.deepEqual - 7.2', function () {
      assert.doesNotThrow(makeBlock(assert.deepEqual, new Date(2000, 3, 14),
                          new Date(2000, 3, 14)), 'deepEqual date');

      assert.throws(makeBlock(assert.deepEqual, new Date(), new Date(2000, 3, 14)),
                    assert.AssertionError,
                    'deepEqual date');
    });

    test('assert.deepEqual - 7.3', function () {
      assert.doesNotThrow(makeBlock(assert.deepEqual, /a/, /a/));
      assert.doesNotThrow(makeBlock(assert.deepEqual, /a/g, /a/g));
      assert.doesNotThrow(makeBlock(assert.deepEqual, /a/i, /a/i));
      assert.doesNotThrow(makeBlock(assert.deepEqual, /a/m, /a/m));
      assert.doesNotThrow(makeBlock(assert.deepEqual, /a/igm, /a/igm));
      assert.throws(makeBlock(assert.deepEqual, /ab/, /a/));
      assert.throws(makeBlock(assert.deepEqual, /a/g, /a/));
      assert.throws(makeBlock(assert.deepEqual, /a/i, /a/));
      assert.throws(makeBlock(assert.deepEqual, /a/m, /a/));
      assert.throws(makeBlock(assert.deepEqual, /a/igm, /a/im));

      var re1 = /a/;
      re1.lastIndex = 3;
      assert.throws(makeBlock(assert.deepEqual, re1, /a/));
    });

    test('assert.deepEqual - 7.4', function () {
      assert.doesNotThrow(makeBlock(assert.deepEqual, 4, '4'), 'deepEqual == check');
      assert.doesNotThrow(makeBlock(assert.deepEqual, true, 1), 'deepEqual == check');
      assert.throws(makeBlock(assert.deepEqual, 4, '5'),
                assert.AssertionError,
                'deepEqual == check');
    });

    test('assert.deepEqual - 7.5', function () {
      // having the same number of owned properties && the same set of keys
      assert.doesNotThrow(makeBlock(assert.deepEqual, {a: 4}, {a: 4}));
      assert.doesNotThrow(makeBlock(assert.deepEqual, {a: 4, b: '2'}, {a: 4, b: '2'}));
      assert.doesNotThrow(makeBlock(assert.deepEqual, [4], ['4']));
      assert.throws(makeBlock(assert.deepEqual, {a: 4}, {a: 4, b: true}),
                assert.AssertionError);
      assert.doesNotThrow(makeBlock(assert.deepEqual, ['a'], {0: 'a'}));
      //(although not necessarily the same order),
      assert.doesNotThrow(makeBlock(assert.deepEqual, {a: 4, b: '1'}, {b: '1', a: 4}));
      var a1 = [1, 2, 3];
      var a2 = [1, 2, 3];
      a1.a = 'test';
      a1.b = true;
      a2.b = true;
      a2.a = 'test';
      assert.throws(makeBlock(assert.deepEqual, keys(a1), keys(a2)),
                assert.AssertionError);
      assert.doesNotThrow(makeBlock(assert.deepEqual, a1, a2));
    });

    test('assert.deepEqual - ES6 primitives', function () {
      assert.throws(makeBlock(assert.deepEqual, null, {}), assert.AssertionError);
      assert.throws(makeBlock(assert.deepEqual, undefined, {}), assert.AssertionError);
      assert.throws(makeBlock(assert.deepEqual, 'a', ['a']), assert.AssertionError);
      assert.throws(makeBlock(assert.deepEqual, 'a', {0: 'a'}), assert.AssertionError);
      assert.throws(makeBlock(assert.deepEqual, 1, {}), assert.AssertionError);
      assert.throws(makeBlock(assert.deepEqual, true, {}), assert.AssertionError);
      if (typeof Symbol === 'symbol') {
        assert.throws(makeBlock(assert.deepEqual, Symbol(), {}), assert.AssertionError);
      }
    });

    test('assert.deepEqual - object wrappers', function () {
      assert.doesNotThrow(makeBlock(assert.deepEqual, new String('a'), ['a']));
      assert.doesNotThrow(makeBlock(assert.deepEqual, new String('a'), {0: 'a'}));
      assert.doesNotThrow(makeBlock(assert.deepEqual, new Number(1), {}));
      assert.doesNotThrow(makeBlock(assert.deepEqual, new Boolean(true), {}));
    });

    test('assert.deepEqual - Buffers', function () {
      assert.doesNotThrow(makeBlock(assert.deepEqual, new Buffer([1, 2, 3]), new Buffer([1, 2, 3])));
      if (typeof global.Uint8Array === 'function') {
        assert.throws(makeBlock(assert.deepEqual, new Buffer([1, 2, 3]), new Uint8Array([1, 2, 3])));
      }
      if (typeof global.Uint16Array === 'function') {
        assert.doesNotThrow(makeBlock(assert.deepEqual, new Uint16Array([1, 2, 3]), new Uint16Array([1, 2, 3])));
      }
    });

    function thrower(errorConstructor) {
      throw new errorConstructor('test');
    }

    test('assert - testing the throwing', function () {
      var aethrow = makeBlock(thrower, assert.AssertionError);
      aethrow = makeBlock(thrower, assert.AssertionError);

      // the basic calls work
      assert.throws(makeBlock(thrower, assert.AssertionError),
                    assert.AssertionError, 'message');
      assert.throws(makeBlock(thrower, assert.AssertionError), assert.AssertionError);
      assert.throws(makeBlock(thrower, assert.AssertionError));

      // if not passing an error, catch all.
      assert.throws(makeBlock(thrower, TypeError));

      // when passing a type, only catch errors of the appropriate type
      var threw = false;
      try {
        assert.throws(makeBlock(thrower, TypeError), assert.AssertionError);
      } catch (e) {
        threw = true;
        assert.ok(e instanceof TypeError, 'type');
      }
      assert.equal(true, threw,
                   'a.throws with an explicit error is eating extra errors',
                   assert.AssertionError);
      threw = false;

      // doesNotThrow should pass through all errors
      try {
        assert.doesNotThrow(makeBlock(thrower, TypeError), assert.AssertionError);
      } catch (e) {
        threw = true;
        assert.ok(e instanceof TypeError);
      }
      assert.equal(true, threw,
                   'a.doesNotThrow with an explicit error is eating extra errors');

      // key difference is that throwing our correct error makes an assertion error
      try {
        assert.doesNotThrow(makeBlock(thrower, TypeError), TypeError);
      } catch (e) {
        threw = true;
        assert.ok(e instanceof assert.AssertionError);
      }
      assert.equal(true, threw,
                   'a.doesNotThrow is not catching type matching errors');
    });

    test('assert.ifError', function () {
      assert.throws(function() {assert.ifError(new Error('test error'))});
      assert.doesNotThrow(function() {assert.ifError(null)});
      assert.doesNotThrow(function() {assert.ifError()});
    });

    test('assert - make sure that validating using constructor really works', function () {
      var threw = false;
      try {
        assert.throws(
            function() {
              throw ({});
            },
            Array
        );
      } catch (e) {
        threw = true;
      }
      assert.ok(threw, 'wrong constructor validation');
    });

    test('assert - use a RegExp to validate error message', function () {
      assert.throws(makeBlock(thrower, TypeError), /test/);
    });

    test('assert - use a fn to validate error object', function () {
      assert.throws(makeBlock(thrower, TypeError), function(err) {
        if ((err instanceof TypeError) && /test/.test(err)) {
          return true;
        }
      });
    });

    test('assert - make sure deepEqual doesn\'t loop forever on circular refs', function () {
      var b = {};
      b.b = b;

      var c = {};
      c.b = c;

      var gotError = false;
      var equal = true;
      try {
        equal = assert.deepEqual(b, c);
      } catch (e) {
        gotError = true;
      }
      assert.ok(gotError || !equal, gotError ? 'got error': 'are equal');
    });

    test('assert - ensure reflexivity of deepEqual with `arguments` objects', function() {
        var args = (function() { return arguments; })();
        assert.throws(makeBlock(assert.deepEqual, [], args), assert.AssertionError);
        assert.throws(makeBlock(assert.deepEqual, args, []), assert.AssertionError);
    });

    test('assert - test assertion message', function () {
      function testAssertionMessage(actual, expected) {
        try {
          assert.equal(actual, '');
        } catch (e) {
          assert.equal(e.toString(),
              ['AssertionError:', expected, '==', '\'\''].join(' '));
        }
      }
      testAssertionMessage(undefined, 'undefined');
      testAssertionMessage(null, 'null');
      testAssertionMessage(true, 'true');
      testAssertionMessage(false, 'false');
      testAssertionMessage(0, '0');
      testAssertionMessage(100, '100');
      testAssertionMessage(NaN, 'NaN');
      testAssertionMessage(Infinity, 'Infinity');
      testAssertionMessage(-Infinity, '-Infinity');
      testAssertionMessage('', '""');
      testAssertionMessage('foo', '\'foo\'');
      testAssertionMessage([], '[]');
      testAssertionMessage([1, 2, 3], '[ 1, 2, 3 ]');
      testAssertionMessage(new Buffer([1, 2, 3]), '<Buffer 01 02 03>');
      if (typeof global.Uint8Array === 'function' && Object.getOwnPropertyNames( new Uint8Array([])).length === 0) {
        // todo fix util.inspect
        testAssertionMessage(new Uint8Array([1, 2, 3]), '{ \'0\': 1, \'1\': 2, \'2\': 3 }');
      }
      testAssertionMessage(/a/, '/a/');
      testAssertionMessage(function f() {}, '[Function: f]');
      testAssertionMessage({}, '{}');
      testAssertionMessage({a: undefined, b: null}, '{ a: undefined, b: null }');
      testAssertionMessage({a: NaN, b: Infinity, c: -Infinity},
          '{ a: NaN, b: Infinity, c: -Infinity }');
    });

    test('assert - regressions from node.js testcase', function () {
      var threw = false;

      try {
        assert.throws(function () {
          assert.ifError(null);
        });
      } catch (e) {
        threw = true;
        assert.equal(e.message, 'Missing expected exception..');
      }
      assert.ok(threw);

      try {
        assert.equal(1, 2);
      } catch (e) {
        assert.equal(e.toString().split('\n')[0], 'AssertionError: 1 == 2');
      }

      try {
        assert.equal(1, 2, 'oh no');
      } catch (e) {
        assert.equal(e.toString().split('\n')[0], 'AssertionError: oh no');
      }
    });

    test('assert - strict mode', function () {
      var assertStrict = assert.strict;

      assertStrict.throws(makeBlock(assertStrict.equal, 1, true), assertStrict.AssertionError);
      assertStrict.notEqual(0, false);
      assertStrict.throws(makeBlock(assertStrict.deepEqual, 1, true), assertStrict.AssertionError);
      assertStrict.notDeepEqual(0, false);
      assertStrict.equal(assertStrict.strict, assertStrict.strict.strict);
      assertStrict.equal(assertStrict.equal, assertStrict.strictEqual);
      assertStrict.equal(assertStrict.deepEqual, assertStrict.deepStrictEqual);
      assertStrict.equal(assertStrict.notEqual, assertStrict.notStrictEqual);
      assertStrict.equal(assertStrict.notDeepEqual, assertStrict.notDeepStrictEqual);
      assertStrict.equal(Object.keys(assertStrict).length, Object.keys(assert).length);
    });
}
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