public void GetEmbeddedJavaScript_PreparesJavaScriptCorrectly(string resource)
{
// Arrange
var expected = resource.Substring(0, resource.Length - 2);
var stream = new MemoryStream(Encoding.UTF8.GetBytes(resource));
var getManifestResourceStream = new Func <string, Stream>(name => stream);
var cache = new ConcurrentDictionary <string, string>();
// Act
var result = JavaScriptResources.GetEmbeddedJavaScript("test.js", getManifestResourceStream, cache);
// Assert
Assert.Equal(expected, result);
}
public void GetEmbeddedJavaScript_LoadsEmbeddedResourceFromManifestStream()
{
// Arrange
var resource = "window.alert('An alert');";
var expected = resource.Substring(0, resource.Length - 2);
var stream = new MemoryStream(Encoding.UTF8.GetBytes(resource));
var getManifestResourceStream = new Func <string, Stream>(name => stream);
var cache = new ConcurrentDictionary <string, string>();
// Act
var result = JavaScriptResources.GetEmbeddedJavaScript("test.js", getManifestResourceStream, cache);
// Assert
Assert.Equal(expected, result);
}
private void BuildFallbackBlock(TagHelperContent builder)
{
EnsureGlobbingUrlBuilder();
var fallbackHrefs =
GlobbingUrlBuilder.BuildUrlList(FallbackHref, FallbackHrefInclude, FallbackHrefExclude).ToArray();
if (fallbackHrefs.Length > 0)
{
if (AppendVersion == true)
{
for (var i = 0; i < fallbackHrefs.Length; i++)
{
// fallbackHrefs come from bound attributes and globbing. Must always be non-null.
Debug.Assert(fallbackHrefs[i] != null);
fallbackHrefs[i] = _fileVersionProvider.AddFileVersionToPath(fallbackHrefs[i]);
}
}
builder.AppendHtml(HtmlString.NewLine);
// Build the <meta /> tag that's used to test for the presence of the stylesheet
builder
.AppendHtml("<meta name=\"x-stylesheet-fallback-test\" content=\"\" class=\"")
.Append(FallbackTestClass)
.AppendHtml("\" />");
// Build the <script /> tag that checks the effective style of <meta /> tag above and renders the extra
// <link /> tag to load the fallback stylesheet if the test CSS property value is found to be false,
// indicating that the primary stylesheet failed to load.
// GetEmbeddedJavaScript returns JavaScript to which we add '"{0}","{1}",{2});'
builder
.AppendHtml("<script>")
.AppendHtml(JavaScriptResources.GetEmbeddedJavaScript(FallbackJavaScriptResourceName))
.AppendHtml("\"")
.AppendHtml(JavaScriptEncoder.Encode(FallbackTestProperty))
.AppendHtml("\",\"")
.AppendHtml(JavaScriptEncoder.Encode(FallbackTestValue))
.AppendHtml("\",")
.AppendHtml(JavaScriptStringArrayEncoder.Encode(JavaScriptEncoder, fallbackHrefs))
.AppendHtml(");</script>");
}
}
public void GetEmbeddedJavaScript_AddsResourceToCacheWhenRead()
{
// Arrange
var resource = "window.alert('An alert');";
var expected = resource.Substring(0, resource.Length - 2);
var stream = new MemoryStream(Encoding.UTF8.GetBytes(resource));
var getManifestResourceStream = new Func <string, Stream>(name => stream);
var cache = new ConcurrentDictionary <string, string>();
// Act
var result = JavaScriptResources.GetEmbeddedJavaScript("test.js", getManifestResourceStream, cache);
// Assert
Assert.Collection(cache, kvp =>
{
Assert.Equal("test.js", kvp.Key);
Assert.Equal(expected, kvp.Value);
});
}
public void GetEmbeddedJavaScript_LoadsResourceFromCacheAfterInitialCall()
{
// Arrange
var resource = "window.alert('An alert');";
var stream = new MemoryStream(Encoding.UTF8.GetBytes(resource));
var callCount = 0;
var getManifestResourceStream = new Func <string, Stream>(name =>
{
callCount++;
return(stream);
});
var cache = new ConcurrentDictionary <string, string>();
// Act
var result = JavaScriptResources.GetEmbeddedJavaScript("test.js", getManifestResourceStream, cache);
result = JavaScriptResources.GetEmbeddedJavaScript("test.js", getManifestResourceStream, cache);
// Assert
Assert.Equal(1, callCount);
}
private void BuildFallbackBlock(TagHelperAttributeList attributes, TagHelperContent builder)
{
EnsureGlobbingUrlBuilder();
var fallbackHrefs = GlobbingUrlBuilder.BuildUrlList(
FallbackHref,
FallbackHrefInclude,
FallbackHrefExclude);
if (fallbackHrefs.Count == 0)
{
return;
}
builder.AppendHtml(HtmlString.NewLine);
// Build the <meta /> tag that's used to test for the presence of the stylesheet
builder
.AppendHtml("<meta name=\"x-stylesheet-fallback-test\" content=\"\" class=\"")
.Append(FallbackTestClass)
.AppendHtml("\" />");
// Build the <script /> tag that checks the effective style of <meta /> tag above and renders the extra
// <link /> tag to load the fallback stylesheet if the test CSS property value is found to be false,
// indicating that the primary stylesheet failed to load.
// GetEmbeddedJavaScript returns JavaScript to which we add '"{0}","{1}",{2});'
builder
.AppendHtml("<script>")
.AppendHtml(JavaScriptResources.GetEmbeddedJavaScript(FallbackJavaScriptResourceName))
.AppendHtml("\"")
.AppendHtml(JavaScriptEncoder.Encode(FallbackTestProperty))
.AppendHtml("\",\"")
.AppendHtml(JavaScriptEncoder.Encode(FallbackTestValue))
.AppendHtml("\",");
AppendFallbackHrefs(builder, fallbackHrefs);
builder.AppendHtml(", \"");
// Perf: Avoid allocating enumerator and read interface .Count once rather than per iteration
var attributesCount = attributes.Count;
for (var i = 0; i < attributesCount; i++)
{
var attribute = attributes[i];
if (string.Equals(attribute.Name, HrefAttributeName, StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (SuppressFallbackIntegrity && string.Equals(attribute.Name, IntegrityAttributeName, StringComparison.OrdinalIgnoreCase))
{
continue;
}
attribute.WriteTo(StringWriter, HtmlEncoder);
StringWriter.Write(' ');
}
var stringBuilder = StringWriter.GetStringBuilder();
var scriptTags = stringBuilder.ToString();
stringBuilder.Clear();
var encodedScriptTags = JavaScriptEncoder.Encode(scriptTags);
builder.AppendHtml(encodedScriptTags);
builder.AppendHtml("\");</script>");
}