Documentation
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Overview ¶
Package emriface provides an interface to enable mocking the Amazon Elastic MapReduce service client for testing your code.
It is important to note that this interface will have breaking changes when the service model is updated and adds new API operations, paginators, and waiters.
Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
This section is empty.
Types ¶
type ClientAPI ¶ added in v0.9.0
type ClientAPI interface {
AddInstanceFleetRequest(*emr.AddInstanceFleetInput) emr.AddInstanceFleetRequest
AddInstanceGroupsRequest(*emr.AddInstanceGroupsInput) emr.AddInstanceGroupsRequest
AddJobFlowStepsRequest(*emr.AddJobFlowStepsInput) emr.AddJobFlowStepsRequest
AddTagsRequest(*emr.AddTagsInput) emr.AddTagsRequest
CancelStepsRequest(*emr.CancelStepsInput) emr.CancelStepsRequest
CreateSecurityConfigurationRequest(*emr.CreateSecurityConfigurationInput) emr.CreateSecurityConfigurationRequest
DeleteSecurityConfigurationRequest(*emr.DeleteSecurityConfigurationInput) emr.DeleteSecurityConfigurationRequest
DescribeClusterRequest(*emr.DescribeClusterInput) emr.DescribeClusterRequest
DescribeJobFlowsRequest(*emr.DescribeJobFlowsInput) emr.DescribeJobFlowsRequest
DescribeSecurityConfigurationRequest(*emr.DescribeSecurityConfigurationInput) emr.DescribeSecurityConfigurationRequest
DescribeStepRequest(*emr.DescribeStepInput) emr.DescribeStepRequest
ListBootstrapActionsRequest(*emr.ListBootstrapActionsInput) emr.ListBootstrapActionsRequest
ListClustersRequest(*emr.ListClustersInput) emr.ListClustersRequest
ListInstanceFleetsRequest(*emr.ListInstanceFleetsInput) emr.ListInstanceFleetsRequest
ListInstanceGroupsRequest(*emr.ListInstanceGroupsInput) emr.ListInstanceGroupsRequest
ListInstancesRequest(*emr.ListInstancesInput) emr.ListInstancesRequest
ListSecurityConfigurationsRequest(*emr.ListSecurityConfigurationsInput) emr.ListSecurityConfigurationsRequest
ListStepsRequest(*emr.ListStepsInput) emr.ListStepsRequest
ModifyInstanceFleetRequest(*emr.ModifyInstanceFleetInput) emr.ModifyInstanceFleetRequest
ModifyInstanceGroupsRequest(*emr.ModifyInstanceGroupsInput) emr.ModifyInstanceGroupsRequest
PutAutoScalingPolicyRequest(*emr.PutAutoScalingPolicyInput) emr.PutAutoScalingPolicyRequest
RemoveAutoScalingPolicyRequest(*emr.RemoveAutoScalingPolicyInput) emr.RemoveAutoScalingPolicyRequest
RemoveTagsRequest(*emr.RemoveTagsInput) emr.RemoveTagsRequest
RunJobFlowRequest(*emr.RunJobFlowInput) emr.RunJobFlowRequest
SetTerminationProtectionRequest(*emr.SetTerminationProtectionInput) emr.SetTerminationProtectionRequest
SetVisibleToAllUsersRequest(*emr.SetVisibleToAllUsersInput) emr.SetVisibleToAllUsersRequest
TerminateJobFlowsRequest(*emr.TerminateJobFlowsInput) emr.TerminateJobFlowsRequest
WaitUntilClusterRunning(context.Context, *emr.DescribeClusterInput, ...aws.WaiterOption) error
WaitUntilClusterTerminated(context.Context, *emr.DescribeClusterInput, ...aws.WaiterOption) error
WaitUntilStepComplete(context.Context, *emr.DescribeStepInput, ...aws.WaiterOption) error
}
ClientAPI provides an interface to enable mocking the emr.Client methods. This make unit testing your code that calls out to the SDK's service client's calls easier.
The best way to use this interface is so the SDK's service client's calls can be stubbed out for unit testing your code with the SDK without needing to inject custom request handlers into the SDK's request pipeline.
// myFunc uses an SDK service client to make a request to
// Amazon EMR.
func myFunc(svc emriface.ClientAPI) bool {
// Make svc.AddInstanceFleet request
}
func main() {
cfg, err := external.LoadDefaultAWSConfig()
if err != nil {
panic("failed to load config, " + err.Error())
}
svc := emr.New(cfg)
myFunc(svc)
}
In your _test.go file:
// Define a mock struct to be used in your unit tests of myFunc.
type mockClientClient struct {
emriface.ClientPI
}
func (m *mockClientClient) AddInstanceFleet(input *emr.AddInstanceFleetInput) (*emr.AddInstanceFleetOutput, error) {
// mock response/functionality
}
func TestMyFunc(t *testing.T) {
// Setup Test
mockSvc := &mockClientClient{}
myfunc(mockSvc)
// Verify myFunc's functionality
}
It is important to note that this interface will have breaking changes when the service model is updated and adds new API operations, paginators, and waiters. Its suggested to use the pattern above for testing, or using tooling to generate mocks to satisfy the interfaces.
Source Files