SDK v2.23.0 provider merging causes duplicate provider test failures #1064

dghubble · 2022-09-20T17:24:50Z

SDK version

Upgrading from v2.22.0 to v2.23.0 shows the breakage. See poseidon/terraform-provider-matchbox#114

Relevant provider source code

Here's an example poseidon/terraform-provider-matchbox#114

The Providers field is set (required) and an HCL provider block is defined as part of the config. https://github.com/poseidon/terraform-provider-matchbox/blob/main/matchbox/resource_group_test.go#L45

Providers: testProviders,                   <--- provider
Steps: []resource.TestStep{
 {
  Config: srv.AddProviderConfig(groupWithAllFields),    <--- provider HCL
  Check: resource.ComposeAggregateTestCheckFunc(
...

The provider block is added to the config by AddProviderConfig to configure the provider with neccessary credentials for testing. Overall, I think its a pretty typical situation.

What changed is that SDK v2.23.0 added merging logic for providers in #1057 (file helper/resource/teststep_providers.go) https://github.com/hashicorp/terraform-plugin-sdk/blob/main/helper/resource/teststep_providers.go#L16 that introduces duplication.

I've been able to checkout sdk v2.23.0, add a replace directive to go.mod, show it breaks my provider, revert #1057, and show the problem is resolved.

Terraform Configuration Files

These details aren't important for repro, but I'll include just since the issue template asks.

provider "matchbox" {
  endpoint = "some-endpoint"
  client_cert = <<CERT
some cert
CERT
  client_key = <<KEY
some key
KEY
  ca         = <<CA
some ca
CA
}

resource "matchbox_profile" "default" {
  name   = "default"
  kernel = "foo"
}

Debug Output

Expected Behavior

Tests should continue working on v2.23.0 as they did on v2.22.0

Actual Behavior

SDK tests always see this as duplicated providers (although the SDK is the one adding the duplicate).

Error: Duplicate provider configuration
        
          on terraform_plugin_test.tf line 3:
           3: 		provider "matchbox" {
        
        A default (non-aliased) provider configuration for "matchbox" was already
        given at terraform_plugin_test.tf:1,1-20. If multiple configurations are
        required, set the "alias" argument for alternative configurations.

Steps to Reproduce

poseidon/terraform-provider-matchbox#114 is a great example. Rollback to v2.22.0 and it works again.

References

#1057 @bflad

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bflad · 2022-09-20T17:35:38Z

Hi @dghubble 👋 Thank you for reporting this and sorry the upgrade gave you unexpected issues.

Just to confirm things, if you run your testing with the TF_LOG environment variable set to TRACE and search for Setting Terraform configuration right before the testing errors out, does it show a configuration with multiple provider "matchbox" blocks? The logic that's adding the terraform/provider configuration blocks should only take affect for TestCase or TestStep that use the ExternalProviders field, but ... okay I found the code issue:

terraform-plugin-sdk/helper/resource/testcase_providers.go

Lines 15 to 21 in fa98583

    
           // [BF] The Providers field handling predates the logic being moved to this 
        
           //      method. It's not entirely clear to me at this time why this field 
        
           //      is being used and not the others, but leaving it here just in case 
        
           //      it does have a special purpose that wasn't being unit tested prior. 
        
           for name := range c.Providers { 
        
           	providerBlocks.WriteString(fmt.Sprintf("provider %q {}\n", name)) 
        
           }

Apparently TestCase Providers field is treated special. 😖 My apologies for missing that. The configuration merging logic will need to account for that by skipping the providers blocks if provider is already found in the configuration.

bflad · 2022-09-20T17:38:19Z

It might be best if we just unilaterally skipped the provider source merge if the terraform or any provider configuration blocks are found in the given configurations.

bflad · 2022-09-20T17:41:10Z

Another workaround in your case without any changes in the SDK would be switching from the deprecated Providers field to the ProviderFactories field. That should skip the duplicate provider ... being written into the merged configuration.

dghubble · 2022-09-21T01:01:26Z

Just to confirm things...

It doesn't show the exact configuration, but there seem to be two "matchbox" providers. That may be related to the original problem you were solving with hashicorp vs non-hashicorp.

[TRACE] sdk.helper_resource: Setting Terraform CLI reattach configuration: test_step_number=1 test_terraform_path=/usr/local/bin/terraform test_working_directory=/tmp/plugintest1199335445 tf_reattach_config="map[registry.terraform.io/-/matchbox:{grpc 5 557795 true {unix /tmp/plugin1472369595}} registry.terraform.io/hashicorp/matchbox:{grpc 5 557795 true {unix /tmp/plugin1472369595}}]" test_name=TestResourceProfile_Read

Another workaround in your case without any changes in the SDK would be switching from the deprecated Providers field to the ProviderFactories field

Interesting. Yeah, I can change to ProviderFactories and it doesn't cause the problem anymore. Nice

* Providers was deprecated in favor of ProviderFactories * Workaround an issue with the terraform-plugin-sdk v2.23.0 that causes duplicate provider blocks when UnitTest.Providers is used * Update terraform-plugin-sdk from v2.22.0 to v2.23.0 Rel: hashicorp/terraform-plugin-sdk#1064

varnastadeus · 2022-10-11T10:45:03Z

@bflad we are having same issue:

Step 1/2 error: Error running pre-apply refresh: exit status 1
        
        Error: Duplicate provider configuration
        
          on terraform_plugin_test.tf line 14:
          14: provider "aws" {
        
        A default (non-aliased) provider configuration for "aws" was already given at
        terraform_plugin_test.tf:11,1-[15](https://github.com/castai/terraform-provider-castai/actions/runs/3226033532/jobs/5279063009#step:8:16). If multiple configurations are required,
        set the "alias" argument for alternative configurations.

we are using external providers

ExternalProviders: map[string]resource.ExternalProvider{
			"aws": {
				Source:            "hashicorp/aws",
				VersionConstraint: "~> 4.0",
			},
		},

and

provider "aws" {
  region = "eu-central-1"
}

switching to v2.22.0 works as expected

…estStep merged configuration Reference: #1064 Previously: ``` --- FAIL: TestStepMergedConfig/teststep-externalproviders-config-with-provider-block-unquoted (0.00s) /Users/bflad/src/github.com/hashicorp/terraform-plugin-sdk/helper/resource/teststep_providers_test.go:643: unexpected difference: ( """ ... // 6 identical lines } } - - provider "test" {} - provider test {} ... // 2 identical lines """ ) --- FAIL: TestStepMergedConfig/teststep-externalproviders-config-with-provider-block-quoted (0.00s) /Users/bflad/src/github.com/hashicorp/terraform-plugin-sdk/helper/resource/teststep_providers_test.go:643: unexpected difference: ( """ ... // 6 identical lines } } - - provider "test" {} - provider "test" {} ... // 2 identical lines """ ) ```

bflad · 2022-11-08T16:12:46Z

Submitted #1092, which should prevent the testing framework from adding its own provider configuration blocks if it detects a TestStep.Config that already has them. 👍

…estStep merged configuration (#1092) Reference: #1064 Previously: ``` --- FAIL: TestStepMergedConfig/teststep-externalproviders-config-with-provider-block-unquoted (0.00s) /Users/bflad/src/github.com/hashicorp/terraform-plugin-sdk/helper/resource/teststep_providers_test.go:643: unexpected difference: ( """ ... // 6 identical lines } } - - provider "test" {} - provider test {} ... // 2 identical lines """ ) --- FAIL: TestStepMergedConfig/teststep-externalproviders-config-with-provider-block-quoted (0.00s) /Users/bflad/src/github.com/hashicorp/terraform-plugin-sdk/helper/resource/teststep_providers_test.go:643: unexpected difference: ( """ ... // 6 identical lines } } - - provider "test" {} - provider "test" {} ... // 2 identical lines """ ) ```

github-actions · 2022-12-15T02:16:54Z

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.

dghubble added the bug Something isn't working label Sep 20, 2022

bflad added the subsystem/tests Issues and feature requests related to the testing framework. label Sep 20, 2022

dghubble mentioned this issue Sep 21, 2022

Replace UnitTest Providers with ProviderFactories poseidon/terraform-provider-matchbox#115

Merged

vancluever mentioned this issue Oct 3, 2022

Bump github.com/hashicorp/terraform-plugin-sdk/v2 from 2.21.0 to 2.23.0 vancluever/terraform-provider-acme#261

Merged

byashimov mentioned this issue Nov 7, 2022

add aiven_azure_privatelink_connection_approval test aiven/terraform-provider-aiven#953

Merged

bflad self-assigned this Nov 8, 2022

bflad added this to the v2.24.1 milestone Nov 8, 2022

bflad mentioned this issue Nov 8, 2022

helper/resource: Check for existing provider configuration block in TestStep merged configuration #1092

Merged

bflad closed this as completed in #1092 Nov 14, 2022

github-actions bot locked as resolved and limited conversation to collaborators Dec 15, 2022

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SDK v2.23.0 provider merging causes duplicate provider test failures #1064

SDK v2.23.0 provider merging causes duplicate provider test failures #1064

dghubble commented Sep 20, 2022

bflad commented Sep 20, 2022

bflad commented Sep 20, 2022

bflad commented Sep 20, 2022

dghubble commented Sep 21, 2022

varnastadeus commented Oct 11, 2022 •

edited

bflad commented Nov 8, 2022

github-actions bot commented Dec 15, 2022

SDK v2.23.0 provider merging causes duplicate provider test failures #1064

SDK v2.23.0 provider merging causes duplicate provider test failures #1064

Comments

dghubble commented Sep 20, 2022

SDK version

Relevant provider source code

Terraform Configuration Files

Debug Output

Expected Behavior

Actual Behavior

Steps to Reproduce

References

bflad commented Sep 20, 2022

bflad commented Sep 20, 2022

bflad commented Sep 20, 2022

dghubble commented Sep 21, 2022

varnastadeus commented Oct 11, 2022 • edited

bflad commented Nov 8, 2022

github-actions bot commented Dec 15, 2022

varnastadeus commented Oct 11, 2022 •

edited