public void TransformReplacesImageUrlWithDataUri()
{
StubFile("test.png", new byte[] { 1, 2, 3 });
var css = "p { background-image: url(test.png); }";
var getResult = transformer.Transform(css.AsStream, asset.Object);
var expectedBase64 = Convert.ToBase64String(new byte[] { 1, 2, 3 });
getResult().ReadToEnd().ShouldEqual(
"p { background-image: url(data:image/png;base64," + expectedBase64 + "); }"
);
}
public void TransformInsertsImageUrlWithDataUriAfterTheExistingImage()
{
fileSystem.Add("~/test.png", new byte[] { 1, 2, 3 });
var css = "p { background-image: url(test.png); }";
var getResult = transformer.Transform(css.AsStream, asset.Object);
var expectedBase64 = Base64Encode(new byte[] { 1, 2, 3 });
getResult().ReadToEnd().ShouldEqual(
"p { background-image: url(test.png);background-image: url(data:image/png;base64," + expectedBase64 + "); }"
);
}
public void GivenPredicateToTestImagePathReturnsFalse_WhenTransform_ThenImageIsNotTransformedToDataUri()
{
transformer = new CssImageToDataUriTransformer(path => false, fileSystem);
fileSystem.Add("~/test.png", new byte[] { 1, 2, 3 });
var css = "p { background-image: url(test.png); }";
var getResult = transformer.Transform(css.AsStream, asset.Object);
getResult().ReadToEnd().ShouldEqual(
"p { background-image: url(test.png); }"
);
}
public void GivenPredicateToTestImagePathReturnsFalse_WhenTransform_ThenImageIsNotTransformedToDataUri()
{
transformer = new CssImageToDataUriTransformer(path => false, true);
StubFile("test.png", new byte[] { 1, 2, 3 });
var css = "p { background-image: url(test.png); }";
var getResult = transformer.Transform(css.AsStream, asset.Object);
getResult().ReadToEnd().ShouldEqual(
"p { background-image: url(test.png); }"
);
}
public void GivenFileIsLargerThan32768bytesAndIE8SupportDisabled_WhenTransform_ThenUrlIsTransformedIntoDataUri()
{
var t = new CssImageToDataUriTransformer(path => true, false);
StubFile("test.png", new byte[32768 + 1]);
var css = "p { background-image: url(test.png); }";
var getResult = t.Transform(css.AsStream, asset.Object);
var expectedBase64 = Base64Encode(new byte[32768 + 1]);
getResult().ReadToEnd().ShouldEqual(
"p { background-image: url(test.png);background-image: url(data:image/png;base64," + expectedBase64 + "); }"
);
}
