C# (CSharp) CollectionExtensions.IsEmpty示例

示例#1

        public void IsEmpty()
        {
            Assert.True(CollectionExtensions.IsEmpty((IReadOnlyCollection <int>)null));
            Assert.True(CollectionExtensions.IsEmpty((IReadOnlyCollection <int>) new List <int>()));
            Assert.False(CollectionExtensions.IsEmpty((IReadOnlyCollection <int>) new List <int> {
                1
            }));

            Assert.True(CollectionExtensions.IsEmpty((ICollection <int>)null));
            Assert.True(CollectionExtensions.IsEmpty((ICollection <int>) new List <int>()));
            Assert.False(CollectionExtensions.IsEmpty((ICollection <int>) new List <int> {
                1
            }));

            Assert.True(CollectionExtensions.IsEmpty((string)null));
            Assert.True(CollectionExtensions.IsEmpty(""));
            Assert.False(CollectionExtensions.IsEmpty("1"));

            Assert.True(CollectionExtensions.IsEmpty((IEnumerable <int>)null));
            Assert.True(CollectionExtensions.IsEmpty(Enumerable.Empty <int>()));
            Assert.False(CollectionExtensions.IsEmpty(Enumerable.Repeat(1, 1)));
        }