コード例 #1
0
        public void GenericEnumerator_ThrowsInvalidOperationExceptionIfSourceIsChanged()
        {
            var collection = new[] { 5, 7, 9, 11, 13 };
            var version    = 0;

            var enumerator = new GenericEnumerator<Int32>(collection,
                (Object state, Int32 ix, out Int32 result) =>
                {
                    var l = (Int32[])state;
                    if (ix < 0 || ix >= l.Length)
                    {
                        result = 0;
                        return false;
                    }
                    result = l[ix];
                    return true;
                },
                (Object state) =>
                {
                    return version;
                });

            enumerator.MoveNext();

            version++;
            collection[0] = 5;

            Assert.That(() => enumerator.MoveNext(),
                Throws.TypeOf<InvalidOperationException>());
        }
コード例 #2
0
        public void GenericEnumerator_ThrowsInvalidOperationExceptionIfSourceIsChanged()
        {
            var collection = new[] { 5, 7, 9, 11, 13 };
            var version    = 0;

            var enumerator = new GenericEnumerator <Int32>(collection,
                                                           (Object state, Int32 ix, out Int32 result) =>
            {
                var l = (Int32[])state;
                if (ix < 0 || ix >= l.Length)
                {
                    result = 0;
                    return(false);
                }
                result = l[ix];
                return(true);
            },
                                                           (Object state) =>
            {
                return(version);
            });

            enumerator.MoveNext();

            version++;
            collection[0] = 5;

            Assert.That(() => enumerator.MoveNext(),
                        Throws.TypeOf <InvalidOperationException>());
        }
コード例 #3
0
        public void GenericEnumerator_EnumeratesCorrectly()
        {
            var collection = new[] { 5, 7, 9, 11, 13 };

            var enumerator = new GenericEnumerator<Int32>(collection,
                (Object state, Int32 ix, out Int32 result) =>
                {
                    var l = (Int32[])state;
                    if (ix < 0 || ix >= l.Length)
                    {
                        result = 0;
                        return false;
                    }
                    result = l[ix];
                    return true;
                });

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(5);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(7);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(9);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(11);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(13);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(false);
        }
コード例 #4
0
        public void GenericEnumerator_EnumeratesCorrectly()
        {
            var collection = new[] { 5, 7, 9, 11, 13 };

            var enumerator = new GenericEnumerator <Int32>(collection,
                                                           (Object state, Int32 ix, out Int32 result) =>
            {
                var l = (Int32[])state;
                if (ix < 0 || ix >= l.Length)
                {
                    result = 0;
                    return(false);
                }
                result = l[ix];
                return(true);
            });

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(5);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(7);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(9);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(11);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(true);
            TheResultingValue(enumerator.Current).ShouldBe(13);

            TheResultingValue(enumerator.MoveNext()).ShouldBe(false);
        }