public void EvaluatePolicy_NoOrigin_ReturnsInvalidResult()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext("GET", origin: null);
// Act
var result = corsService.EvaluatePolicy(requestContext, new CorsPolicy());
// Assert
Assert.Null(result.AllowedOrigin);
Assert.False(result.VaryByOrigin);
}
public void EvaluatePolicy_EmptyOriginsPolicy_ReturnsInvalidResult()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(origin: "http://example.com");
var policy = new CorsPolicy();
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Null(result.AllowedOrigin);
Assert.False(result.VaryByOrigin);
}
public void EvaluatePolicy_AllowAnyOrigin_SupportsCredentials_AddsSpecificOrigin()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(origin: "http://example.com");
var policy = new CorsPolicy
{
SupportsCredentials = true
};
policy.Origins.Add(CorsConstants.AnyOrigin);
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal("http://example.com", result.AllowedOrigin);
Assert.True(result.VaryByOrigin);
}
public void EvaluatePolicy_AllowAnyOrigin_DoesNotSupportCredentials_EmitsWildcardForOrigin()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(origin: "http://example.com");
var policy = new CorsPolicy
{
SupportsCredentials = false
};
policy.Origins.Add(CorsConstants.AnyOrigin);
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal("*", result.AllowedOrigin);
}
public void ApplyResult_NoAllowCredentials_AllowCredentialsHeaderNotAdded()
{
// Arrange
var result = new CorsResult
{
SupportsCredentials = false
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Allow-Credentials", httpContext.Response.Headers.Keys);
}
public void ApplyResult_AddVaryHeader_VaryHeaderAdded()
{
// Arrange
var result = new CorsResult
{
VaryByOrigin = true
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("Origin", httpContext.Response.Headers["Vary"]);
}
public void EvaluatePolicy_PreflightRequest_PreflightMaxAge_PreflightMaxAgeSet()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(method: "OPTIONS", origin: "http://example.com", accessControlRequestMethod: "PUT");
var policy = new CorsPolicy
{
PreflightMaxAge = TimeSpan.FromSeconds(10)
};
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("*");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal(TimeSpan.FromSeconds(10), result.PreflightMaxAge);
}
public void ApplyResult_ManyAllowExposedHeaders_ExposedHeadersHeaderAdded()
{
// Arrange
var result = new CorsResult();
result.AllowedExposedHeaders.Add("foo");
result.AllowedExposedHeaders.Add("bar");
result.AllowedExposedHeaders.Add("baz");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Contains("Access-Control-Expose-Headers", httpContext.Response.Headers.Keys);
var value = Assert.Single(httpContext.Response.Headers.Values);
Assert.Equal(new[] { "foo,bar,baz" }, value);
string[] exposedHeaderValues = httpContext.Response.Headers.GetCommaSeparatedValues("Access-Control-Expose-Headers");
Assert.Equal(3, exposedHeaderValues.Length);
Assert.Contains("foo", exposedHeaderValues);
Assert.Contains("bar", exposedHeaderValues);
Assert.Contains("baz", exposedHeaderValues);
}
public void ApplyResult_NoAllowExposedHeaders_ExposedHeadersHeaderNotAdded()
{
// Arrange
var result = new CorsResult
{
// AllowExposedHeaders is empty by default
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Expose-Headers", httpContext.Response.Headers.Keys);
}
public void ApplyResult_SomeSimpleAllowHeaders_AllowHeadersHeaderAddedForNonSimpleHeaders()
{
// Arrange
var result = new CorsResult();
result.AllowedHeaders.Add("Content-Language");
result.AllowedHeaders.Add("foo");
result.AllowedHeaders.Add("bar");
result.AllowedHeaders.Add("Accept");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Contains("Access-Control-Allow-Headers", httpContext.Response.Headers.Keys);
string[] headerValues = httpContext.Response.Headers.GetCommaSeparatedValues("Access-Control-Allow-Headers");
Assert.Equal(2, headerValues.Length);
Assert.Contains("foo", headerValues);
Assert.Contains("bar", headerValues);
}
public void ApplyResult_SomeSimpleAllowMethods_AllowMethodsHeaderAddedForNonSimpleMethods()
{
// Arrange
var result = new CorsResult();
result.AllowedMethods.Add("PUT");
result.AllowedMethods.Add("get");
result.AllowedMethods.Add("DELETE");
result.AllowedMethods.Add("POST");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Contains("Access-Control-Allow-Methods", httpContext.Response.Headers.Keys);
var value = Assert.Single(httpContext.Response.Headers.Values);
Assert.Equal(new[] { "PUT,DELETE" }, value);
string[] methods = httpContext.Response.Headers.GetCommaSeparatedValues("Access-Control-Allow-Methods");
Assert.Equal(2, methods.Length);
Assert.Contains("PUT", methods);
Assert.Contains("DELETE", methods);
}
public void EvaluatePolicy_PreflightRequest_MethodNotAllowed_ReturnsInvalidResult()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(method: "OPTIONS", origin: "http://example.com", accessControlRequestMethod: "PUT");
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("GET");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Empty(result.AllowedMethods);
}
public void EaluatePolicy_DoesCaseSensitiveComparison()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var policy = new CorsPolicy();
policy.Methods.Add("POST");
var httpContext = GetHttpContext(origin: null, accessControlRequestMethod: "post");
// Act
var result = corsService.EvaluatePolicy(httpContext, policy);
// Assert
Assert.Empty(result.AllowedHeaders);
Assert.Empty(result.AllowedMethods);
Assert.Empty(result.AllowedExposedHeaders);
Assert.Null(result.AllowedOrigin);
}
public void EvaluatePolicy_PreflightRequest_HeadersRequested_NotAllHeaderMatches_ReturnsInvalidResult()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(
method: "OPTIONS",
origin: "http://example.com",
accessControlRequestMethod: "PUT",
accessControlRequestHeaders: new[] { "match", "noMatch" });
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("*");
policy.Headers.Add("match");
policy.Headers.Add("foo");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Empty(result.AllowedHeaders);
Assert.Empty(result.AllowedMethods);
Assert.Empty(result.AllowedExposedHeaders);
Assert.Null(result.AllowedOrigin);
}
public void EvaluatePolicy_PreflightRequest_HeadersRequested_AllowSomeHeaders_ReturnsSubsetOfListedHeaders()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(
method: "OPTIONS",
origin: "http://example.com",
accessControlRequestMethod: "PUT",
accessControlRequestHeaders: new[] { "content-type", "accept" });
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("*");
policy.Headers.Add("foo");
policy.Headers.Add("bar");
policy.Headers.Add("Content-Type");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal(2, result.AllowedHeaders.Count);
Assert.Contains("Content-Type", result.AllowedHeaders, StringComparer.OrdinalIgnoreCase);
}
public void EvaluatePolicy_PreflightRequest_HeadersRequested_AllowAllHeaders_ReturnsRequestedHeaders()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(
method: "OPTIONS",
origin: "http://example.com",
accessControlRequestMethod: "PUT",
accessControlRequestHeaders: new[] { "foo", "bar" });
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("*");
policy.Headers.Add("*");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal(2, result.AllowedHeaders.Count);
Assert.Contains("foo", result.AllowedHeaders);
Assert.Contains("bar", result.AllowedHeaders);
}
public void EvaluatePolicy_PreflightRequest_ListedMethod_ReturnsSubsetOfListedMethods()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(method: "OPTIONS", origin: "http://example.com", accessControlRequestMethod: "PUT");
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("PUT");
policy.Methods.Add("DELETE");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal(1, result.AllowedMethods.Count);
Assert.Contains("PUT", result.AllowedMethods);
}
public void ApplyResult_OneAllowMethods_AllowMethodsHeaderAdded()
{
// Arrange
var result = new CorsResult();
result.AllowedMethods.Add("PUT");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("PUT", httpContext.Response.Headers["Access-Control-Allow-Methods"]);
}
public void TryValidateOrigin_DoesCaseSensitiveComparison()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var policy = new CorsPolicy();
policy.Origins.Add("http://Example.com");
var httpContext = GetHttpContext(origin: "http://example.com");
// Act
var result = corsService.EvaluatePolicy(httpContext, policy);
// Assert
Assert.Empty(result.AllowedHeaders);
Assert.Empty(result.AllowedMethods);
Assert.Empty(result.AllowedExposedHeaders);
Assert.Null(result.AllowedOrigin);
}
public void ApplyResult_ReturnsNoHeaders_ByDefault()
{
// Arrange
var result = new CorsResult();
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Empty(httpContext.Response.Headers);
}
public void ApplyResult_SimpleAllowMethods_AllowMethodsHeaderNotAdded()
{
// Arrange
var result = new CorsResult();
result.AllowedMethods.Add("GET");
result.AllowedMethods.Add("HEAD");
result.AllowedMethods.Add("POST");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Allow-Methods", httpContext.Response.Headers.Keys);
}
public void ApplyResult_AllowOrigin_AllowOriginHeaderAdded()
{
// Arrange
var result = new CorsResult
{
AllowedOrigin = "http://example.com"
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("http://example.com", httpContext.Response.Headers["Access-Control-Allow-Origin"]);
}
public void ApplyResult_SimpleAllowHeaders_AllowHeadersHeaderNotAdded()
{
// Arrange
var result = new CorsResult();
result.AllowedHeaders.Add("Accept");
result.AllowedHeaders.Add("Accept-Language");
result.AllowedHeaders.Add("Content-Language");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Allow-Headers", httpContext.Response.Headers.Keys);
}
public void ApplyResult_NoPreflightMaxAge_MaxAgeHeaderNotAdded()
{
// Arrange
var result = new CorsResult
{
PreflightMaxAge = null
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Max-Age", httpContext.Response.Headers.Keys);
}
public void ApplyResult_OneAllowExposedHeaders_ExposedHeadersHeaderAdded()
{
// Arrange
var result = new CorsResult();
result.AllowedExposedHeaders.Add("foo");
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("foo", httpContext.Response.Headers["Access-Control-Expose-Headers"]);
}
public void EvaluatePolicy_ManyExposedHeaders_HeadersAllowed()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(origin: "http://example.com");
var policy = new CorsPolicy();
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.ExposedHeaders.Add("foo");
policy.ExposedHeaders.Add("bar");
policy.ExposedHeaders.Add("baz");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.Equal(3, result.AllowedExposedHeaders.Count);
Assert.Contains("foo", result.AllowedExposedHeaders);
Assert.Contains("bar", result.AllowedExposedHeaders);
Assert.Contains("baz", result.AllowedExposedHeaders);
}
public void ApplyResult_NoAllowOrigin_AllowOriginHeaderNotAdded()
{
// Arrange
var result = new CorsResult
{
AllowedOrigin = null
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.DoesNotContain("Access-Control-Allow-Origin", httpContext.Response.Headers.Keys);
}
public void EvaluatePolicy_PreflightRequest_SupportsCredentials_AllowCredentialsReturnsTrue()
{
// Arrange
var corsService = new CorsService(new TestCorsOptions());
var requestContext = GetHttpContext(method: "OPTIONS", origin: "http://example.com", accessControlRequestMethod: "PUT");
var policy = new CorsPolicy
{
SupportsCredentials = true
};
policy.Origins.Add(CorsConstants.AnyOrigin);
policy.Methods.Add("*");
// Act
var result = corsService.EvaluatePolicy(requestContext, policy);
// Assert
Assert.True(result.SupportsCredentials);
}
public void ApplyResult_PreflightMaxAge_MaxAgeHeaderAdded()
{
// Arrange
var result = new CorsResult
{
PreflightMaxAge = TimeSpan.FromSeconds(30)
};
var httpContext = new DefaultHttpContext();
var service = new CorsService(new TestCorsOptions());
// Act
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("30", httpContext.Response.Headers["Access-Control-Max-Age"]);
}
public void ApplyResult_AllowCredentials_AllowCredentialsHeaderAdded()
{
// Arrange
var result = new CorsResult
{
SupportsCredentials = true
};
var service = new CorsService(new TestCorsOptions());
// Act
var httpContext = new DefaultHttpContext();
service.ApplyResult(result, httpContext.Response);
// Assert
Assert.Equal("true", httpContext.Response.Headers["Access-Control-Allow-Credentials"]);
}