public async Task ValidateHandleAsync_Failed()
{
// Arrange
this.memberValidationService
.Setup(svc => svc.ValidateMemberAsync(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>()))
.ReturnsAsync(() => false);
this.authContext = FakeHttpContext.GetAuthorizationHandlerContextForTeacherOrAdmin();
// Act
await this.policyHandler.HandleAsync(this.authContext);
// Assert
Assert.IsFalse(this.authContext.HasSucceeded);
}