public async Task ItDoesNotRedownloadDownloadAFileThatExists()
{
var expectedPath = Path.Combine(AppContext.BaseDirectory, "microsoft.com.1.html");
var task = new DownloadFile
{
Uri = "http://example.org/index.html",
DestinationPath = expectedPath,
BuildEngine = new MockEngine(_output),
};
const string placeholder = "Dummy content";
File.WriteAllText(expectedPath, placeholder);
Assert.True(await task.ExecuteAsync(), "Task should pass");
Assert.Equal(placeholder, File.ReadAllText(expectedPath));
task.Overwrite = true;
Assert.True(await task.ExecuteAsync(), "Task should pass");
Assert.NotEqual(placeholder, File.ReadAllText(expectedPath));
}
public async Task ItFailsForFilesThatDoNotExist()
{
var engine = new MockEngine(_output)
{
ContinueOnError = true
};
var task = new DownloadFile
{
Uri = "http://localhost/this/file/does/not/exist",
DestinationPath = Path.Combine(AppContext.BaseDirectory, "dummy.txt"),
BuildEngine = engine,
};
Assert.False(await task.ExecuteAsync(), "Task should fail");
Assert.NotEmpty(engine.Errors);
}
public async Task ItDownloadAFile()
{
var expectedPath = Path.Combine(AppContext.BaseDirectory, "microsoft.com.2.html");
var task = new DownloadFile
{
Uri = "http://example.org/index.html",
DestinationPath = expectedPath,
BuildEngine = new MockEngine(_output),
};
if (File.Exists(expectedPath))
{
File.Delete(expectedPath);
}
Assert.True(await task.ExecuteAsync(), "Task should pass");
Assert.True(File.Exists(expectedPath), "The file should exist");
}
public async Task ItFailsIfFileAlreadyExists()
{
var engine = new MockEngine(_output)
{
ContinueOnError = true
};
var expectedPath = Path.Combine(AppContext.BaseDirectory, Path.GetRandomFileName());
File.WriteAllText(expectedPath, "");
var task = new DownloadFile
{
Uri = "http://localhost/this/file/does/not/exist",
OutputPath = expectedPath,
BuildEngine = engine,
};
Assert.False(await task.ExecuteAsync(), "Task should fail");
Assert.NotEmpty(engine.Errors);
}
