C# DefaultTagHelperContent.GetContent方法代码示例

        public void CanSetContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var expected = "HtmlEncode[[Hello World!]]";

            // Act
            tagHelperContent.SetContent("Hello World!");

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent(new CommonTestEncoder()));
        }

        public void CanSetContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var expected = "Hello World!";

            // Act
            tagHelperContent.SetContent(expected);

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent());
        }

        public void SetContent_WithTagHelperContent_WorksAsExpected(string expected)
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var copiedTagHelperContent = new DefaultTagHelperContent();
            tagHelperContent.SetContent(expected);

            // Act
            copiedTagHelperContent.SetContent(tagHelperContent);

            // Assert
            Assert.Equal(expected, copiedTagHelperContent.GetContent());
        }

        public void SetContentClearsExistingContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var expected = "Hello World!";
            tagHelperContent.SetContent("Contoso");

            // Act
            tagHelperContent.SetContent(expected);

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent());
        }

        public void CanAppendFormat_WithDifferentCurrentCulture()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat(CultureInfo.CurrentCulture, "{0:D}", DateTime.Parse("01/02/2015"));

            // Assert
            Assert.Equal("01 February 2015", tagHelperContent.GetContent());
        }

        public void CanAppendDefaultTagHelperContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var helloWorldContent = new DefaultTagHelperContent();
            helloWorldContent.SetContent("HelloWorld");
            var expected = "Content was HelloWorld";

            // Act
            tagHelperContent.AppendFormat("Content was {0}", helloWorldContent);

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent());
        }

        public void CanAppendFormat_WithCulture_3Arguments()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat(
                CultureInfo.InvariantCulture,
                "Numbers in InvariantCulture - {0, -5:N} {1} {2}!",
                1.1,
                2.98,
                3.12);

            // Assert
            Assert.Equal("Numbers in InvariantCulture - 1.10  2.98 3.12!", tagHelperContent.GetContent());
        }

        public void CanAppendFormat_WithDifferentCulture()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var culture = new CultureInfo("fr-FR");

            // Act
            tagHelperContent.AppendFormat(culture, "{0} in french!", 1.21);

            // Assert
            Assert.Equal("1,21 in french!", tagHelperContent.GetContent());
        }

        public void CanAppendFormat_WithCulture()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat(
                CultureInfo.InvariantCulture,
                "Numbers in InvariantCulture - {0:N} {1} {2} {3}!",
                1.1,
                2.98,
                145.82,
                32.86);

            // Assert
            Assert.Equal(
                "Numbers in InvariantCulture - HtmlEncode[[1.10]] HtmlEncode[[2.98]] " +
                    "HtmlEncode[[145.82]] HtmlEncode[[32.86]]!",
                tagHelperContent.GetContent(new CommonTestEncoder()));
        }

        public void CanAppendFormat_WithCulture()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat(
                CultureInfo.InvariantCulture,
                "Numbers in InvariantCulture - {0, -5:N} {1} {2} {3}!",
                1.1,
                2.98,
                145.82,
                32.86);

            // Assert
            Assert.Equal("Numbers in InvariantCulture - 1.10  2.98 145.82 32.86!", tagHelperContent.GetContent());
        }

        public void Fluent_Clear_Set_Append_WritesExpectedContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var expected = "Hello World!";
            tagHelperContent.SetContent("Some Random Content");

            // Act
            tagHelperContent.Clear().SetContent("Hello ").Append("World!");

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent());
        }

        public async Task ProcessAsync_FlowsEntryLinkThatAllowsAddingTriggersToAddedEntry()
        {
            // Arrange
            var id = "some-id";
            var expectedContent = new DefaultTagHelperContent();
            expectedContent.SetContent("some-content");
            var tokenSource = new CancellationTokenSource();
            var cache = new MemoryCache(new MemoryCacheOptions());
            var cacheEntryOptions = new MemoryCacheEntryOptions()
                .AddExpirationTrigger(new CancellationTokenTrigger(tokenSource.Token));
            var tagHelperContext = new TagHelperContext(
                allAttributes: new TagHelperAttributeList(),
                items: new Dictionary<object, object>(),
                uniqueId: id,
                getChildContentAsync: () =>
                {
                    TagHelperContent tagHelperContent;
                    if(!cache.TryGetValue("key1", out tagHelperContent))
                    {
                        tagHelperContent = expectedContent;
                        cache.Set("key1", tagHelperContent, cacheEntryOptions);
                    }

                    return Task.FromResult(tagHelperContent);
                });
            var tagHelperOutput = new TagHelperOutput("cache", new TagHelperAttributeList { { "attr", "value" } });
            tagHelperOutput.PreContent.SetContent("<cache>");
            tagHelperOutput.PostContent.SetContent("</cache>");
            var cacheTagHelper = new CacheTagHelper(cache)
            {
                ViewContext = GetViewContext(),
            };
            var key = cacheTagHelper.GenerateKey(tagHelperContext);

            // Act - 1
            await cacheTagHelper.ProcessAsync(tagHelperContext, tagHelperOutput);
            TagHelperContent cachedValue;
            var result = cache.TryGetValue(key, out cachedValue);

            // Assert - 1
            Assert.Equal(expectedContent.GetContent(), tagHelperOutput.Content.GetContent());
            Assert.True(result);
            Assert.Equal(expectedContent, cachedValue);

            // Act - 2
            tokenSource.Cancel();
            result = cache.TryGetValue(key, out cachedValue);

            // Assert - 2
            Assert.False(result);
            Assert.Null(cachedValue);
        }

        public void CanAppendFormatContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat("{0} {1} {2} {3}!", "First", "Second", "Third", "Fourth");

            // Assert
            Assert.Equal(
                "HtmlEncode[[First]] HtmlEncode[[Second]] HtmlEncode[[Third]] HtmlEncode[[Fourth]]!",
                tagHelperContent.GetContent(new CommonTestEncoder()));
        }

        public void CanAppendFormatContent_With3Arguments()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();

            // Act
            tagHelperContent.AppendFormat("0x{0, -5:X} - {1} equivalent for {2}.", 50, "hex", 50);

            // Assert
            Assert.Equal("0x32    - hex equivalent for 50.", tagHelperContent.GetContent());
        }

        public void Fluent_Clear_SetContent_WritesExpectedContent()
        {
            // Arrange
            var tagHelperContent = new DefaultTagHelperContent();
            var expected = "HtmlEncode[[Hello World]]";
            tagHelperContent.SetContent("Some Random Content");

            // Act
            tagHelperContent.Clear().SetContent("Hello World");

            // Assert
            Assert.Equal(expected, tagHelperContent.GetContent(new CommonTestEncoder()));
        }