public void TestComponentLoadFailureWithPreviousErrorWriter()
{
IntPtr previousWriter = System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(
(HostPolicyMock.ErrorWriterDelegate)((string _) => { Assert.True(false, "Should never get here"); }));
using (HostPolicyMock.MockValues_corehost_set_error_writer errorWriterMock =
HostPolicyMock.Mock_corehost_set_error_writer(previousWriter))
{
using (HostPolicyMock.MockValues_corehost_resolve_component_dependencies resolverMock =
HostPolicyMock.Mock_corehost_resolve_component_dependencies(
134,
"",
"",
""))
{
Assert.Throws <InvalidOperationException>(() =>
{
AssemblyDependencyResolver resolver = new AssemblyDependencyResolver(
Path.Combine(TestBasePath, _componentAssemblyPath));
});
// After everything is done, the error writer should be reset to the original value.
Assert.Equal(previousWriter, errorWriterMock.LastSetErrorWriterPtr);
}
}
}
public void TestComponentLoadFailure()
{
const string errorMessageFirstLine = "First line: failure";
const string errorMessageSecondLine = "Second line: value";
using (HostPolicyMock.MockValues_corehost_set_error_writer errorWriterMock =
HostPolicyMock.Mock_corehost_set_error_writer())
{
using (HostPolicyMock.MockValues_corehost_resolve_component_dependencies resolverMock =
HostPolicyMock.Mock_corehost_resolve_component_dependencies(
134,
"",
"",
""))
{
// When the resolver is called, emulate error behavior
// which is to write to the error writer some error message.
resolverMock.Callback = (string componentAssemblyPath) =>
{
Assert.NotNull(errorWriterMock.LastSetErrorWriter);
errorWriterMock.LastSetErrorWriter(errorMessageFirstLine);
errorWriterMock.LastSetErrorWriter(errorMessageSecondLine);
};
string message = Assert.Throws <InvalidOperationException>(() =>
{
AssemblyDependencyResolver resolver = new AssemblyDependencyResolver(
Path.Combine(TestBasePath, _componentAssemblyPath));
}).Message;
Assert.Contains("134", message);
Assert.Contains(
errorMessageFirstLine + Environment.NewLine + errorMessageSecondLine,
message);
// After everything is done, the error writer should be reset.
Assert.Null(errorWriterMock.LastSetErrorWriter);
}
}
}
