public async Task Png_Should_return_a_png_image_file_content()
{
// Arrange
var fixture = new Fixture();
var html = fixture.Create <string>();
var htmlAsByteArray = fixture.Create <byte[]>();
var htmlToImageMock = new Mock <IHtmlToImage>();
htmlToImageMock.Setup(x => x.FromStringToPngAsync(html, null, null))
.ReturnsAsync(htmlAsByteArray);
var sut = new HtmlToImageController(
Mock.Of <ILogger <HtmlToImageController> >(),
htmlToImageMock.Object);
var payload = new HtmlToImageModel()
{
Html = html
};
// Act
var response = await sut.Png(payload);
var responseAction = response as FileContentResult;
// Assert
Assert.IsType <FileContentResult>(response);
Assert.Equal(htmlAsByteArray, responseAction.FileContents);
Assert.Equal("image/png", responseAction.ContentType);
}
public async Task <IActionResult> Png([FromBody] HtmlToImageModel htmlToImageModel)
{
try
{
_logger.LogInformation("Converting HTML to PNG image");
var imageAsBytes = await _htmlToImage.FromStringToPngAsync(htmlToImageModel.Html, htmlToImageModel.Height, htmlToImageModel.Width);
return(File(imageAsBytes, "image/png"));
}
catch (Exception ex)
{
_logger.LogError("Error converting HTML text to PNG image", ex);
return(BadRequest(ex));
}
}
