public async Task TestLoadSvgImage_NullArgument()
{
// run
var svg = await SvgDataResolver.LoadSvgImage(null);
// check
Assert.IsNull(svg, "loaded SKSvg object must be null");
}
public void TestStreamImageSource_StreamFactoryProducesNullObject()
{
// set up
var imageSource = ImageSource.FromStream(
(ct) => Task.FromResult <Stream>(null));
// run + check
Assert.ThrowsAsync <InvalidOperationException>(
async() => await SvgDataResolver.LoadSvgImage(imageSource),
"null Stream object must throw an exception");
}
public void TestStreamImageSource_StreamFactoryProducesNullStream()
{
// set up
var imageSource = ImageSource.FromStream(
(ct) => Task.FromResult(Stream.Null));
// run
Assert.ThrowsAsync <InvalidOperationException>(
async() => await SvgDataResolver.LoadSvgImage(imageSource),
"specifying Stream.Null must throw an exception");
}
public void TestUriImageSource_InvalidUriScheme()
{
// set up
var uri = new Uri("https://raw.githubusercontent.com/vividos/Svg.Skia.Forms/main/samples/images/toucan.svg");
var imageSource = ImageSource.FromUri(uri);
// run + check
Assert.ThrowsAsync <NotSupportedException>(
async() => await SvgDataResolver.LoadSvgImage(imageSource),
"invalid URI schema must throw an exception");
}
public void TestUriImageSource_DataUriInvalidText()
{
// set up
var uri = new Uri("data:image/abc+xml;base65,aaaaaaaaaa");
var imageSource = ImageSource.FromUri(uri);
// run + check
Assert.ThrowsAsync <FormatException>(
async() => await SvgDataResolver.LoadSvgImage(imageSource),
"invalid data: URI must throw an exception");
}
public void TestStreamImageSource_StreamFactoryIsNull()
{
// set up
var imageSource = new StreamImageSource
{
Stream = null
};
// run
Assert.ThrowsAsync <InvalidOperationException>(
async() => await SvgDataResolver.LoadSvgImage(imageSource),
"specifying null Stream factory must throw an exception");
}
public async Task TestFileImageSource_FileImageSource()
{
var testPath = Path.GetDirectoryName(this.GetType().Assembly.Location);
var imageSource = ImageSource.FromFile(
Path.Combine(testPath, "Assets/cog-outline-as-content.svg"));
// run
var svg = await SvgDataResolver.LoadSvgImage(imageSource);
// check
Assert.IsNotNull(svg, "loaded SKSvg object must be non-null");
Assert.IsNotNull(svg.Picture, "SKPicture object must be non-null");
Assert.IsNotNull(svg.Picture.CullRect, "CullRect must be non-null");
Assert.IsFalse(svg.Picture.CullRect.IsEmpty, "CullRect must not be empty");
}
public async Task TestUriImageSource_DataUriPlainText()
{
// set up
var uri = new Uri(SvgConstants.DataUriPlainPrefix + SvgTestImages.TestSvgImageText);
var imageSource = ImageSource.FromUri(uri);
// run
var svg = await SvgDataResolver.LoadSvgImage(imageSource);
// check
Assert.IsNotNull(svg, "loaded SKSvg object must be non-null");
Assert.IsNotNull(svg.Picture, "SKPicture object must be non-null");
Assert.IsNotNull(svg.Picture.CullRect, "CullRect must be non-null");
Assert.IsFalse(svg.Picture.CullRect.IsEmpty, "CullRect must not be empty");
}
public async Task TestStreamImageSource_MemoryStream()
{
// set up
var imageBytes = System.Text.Encoding.UTF8.GetBytes(
SvgTestImages.TestSvgImageText);
var imageSource = ImageSource.FromStream(
(ct) => Task.FromResult <Stream>(new MemoryStream(imageBytes)));
// run
var svg = await SvgDataResolver.LoadSvgImage(imageSource);
// check
Assert.IsNotNull(svg, "loaded SKSvg object must be non-null");
Assert.IsNotNull(svg.Picture, "SKPicture object must be non-null");
Assert.IsNotNull(svg.Picture.CullRect, "CullRect must be non-null");
Assert.IsFalse(svg.Picture.CullRect.IsEmpty, "CullRect must not be empty");
}
