Add acceptance tests for how provider handles impersonate_service_account argument

mmv1/third_party/terraform/fwprovider/data_source_provider_config_plugin_framework.go

@@ -205,7 +205,7 @@ func (d *GoogleProviderConfigPluginFrameworkDataSource) Read(ctx context.Context
 
 	data.Credentials = d.providerConfig.Credentials
 	data.AccessToken = d.providerConfig.AccessToken
-	// TODO(SarahFrench) - impersonate_service_account
+	data.ImpersonateServiceAccount = d.providerConfig.ImpersonateServiceAccount
 	// TODO(SarahFrench) - impersonate_service_account_delegates
 	data.Project = d.providerConfig.Project
 	data.Region = d.providerConfig.Region

mmv1/third_party/terraform/fwprovider/framework_provider_access_token_test.go.erb

@@ -74,7 +74,8 @@ func testAccFwProvider_access_token_configPrecedenceOverEnvironmentVariables(t *
 				Config: testAccFwProvider_access_tokenInProviderBlock(context),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttr("data.google_provider_config_plugin_framework.default", "access_token", providerAccessToken),
-				)},
+				),
+			},
 		},
 	})
 }

mmv1/third_party/terraform/fwprovider/framework_provider_impersonate_service_account_test.go

@@ -0,0 +1,147 @@
+package fwprovider_test
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+	"github.com/hashicorp/terraform-provider-google/google/acctest"
+)
+
+// TestAccFwProvider_impersonate_service_account is a series of acc tests asserting how the plugin-framework provider handles impersonate_service_account arguments
+// It is plugin-framework specific because the HCL used provisions plugin-framework-implemented resources
+// It is a counterpart to TestAccSdkProvider_impersonate_service_account
+func TestAccFwProvider_impersonate_service_account(t *testing.T) {
+	testCases := map[string]func(t *testing.T){
+		// Configuring the provider using inputs
+		"config takes precedence over environment variables":                                                       testAccFwProvider_impersonate_service_account_configPrecedenceOverEnvironmentVariables,
+		"when impersonate_service_account is unset in the config, environment variables are used in a given order": testAccFwProvider_impersonate_service_account_precedenceOrderEnvironmentVariables, // GOOGLE_IMPERSONATE_SERVICE_ACCOUNT
+
+		// Schema-level validation
+		"when impersonate_service_account is set to an empty string in the config the value isn't ignored and results in an error": testAccFwProvider_impersonate_service_account_emptyStringValidation,
+
+		// Usage
+		// We need to wait for a non-Firebase resource to be migrated to the plugin-framework to enable writing this test
+		// "impersonate_service_account controls which service account is used for actions"
+	}
+
+	for name, tc := range testCases {
+		// shadow the tc variable into scope so that when
+		// the loop continues, if t.Run hasn't executed tc(t)
+		// yet, we don't have a race condition
+		// see https://github.com/golang/go/wiki/CommonMistakes#using-goroutines-on-loop-iterator-variables
+		tc := tc
+		t.Run(name, func(t *testing.T) {
+			tc(t)
+		})
+	}
+}
+
+func testAccFwProvider_impersonate_service_account_configPrecedenceOverEnvironmentVariables(t *testing.T) {
+	acctest.SkipIfVcr(t) // Test doesn't interact with API
+
+	impersonateServiceAccountEnvironment := "value-from-envs@example.com"
+	impersonateServiceAccountProviderBlock := "value-from-provider-block@example.com"
+
+	// ensure all possible impersonate_service_account env vars set; show they aren't used
+	t.Setenv("GOOGLE_IMPERSONATE_SERVICE_ACCOUNT", impersonateServiceAccountEnvironment)
+
+	context := map[string]interface{}{
+		"impersonate_service_account": impersonateServiceAccountProviderBlock,
+	}
+
+	acctest.VcrTest(t, resource.TestCase{
+		// No PreCheck for checking ENVs
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccFwProvider_impersonate_service_account_inProviderBlock(context),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("data.google_provider_config_plugin_framework.default", "impersonate_service_account", impersonateServiceAccountProviderBlock),
+				),
+			},
+		},
+	})
+}
+
+func testAccFwProvider_impersonate_service_account_precedenceOrderEnvironmentVariables(t *testing.T) {
+	acctest.SkipIfVcr(t) // Test doesn't interact with API
+	/*
+		These are all the ENVs for impersonate_service_account, and they are in order of precedence.
+		GOOGLE_IMPERSONATE_SERVICE_ACCOUNT
+	*/
+
+	impersonateServiceAccount := "foobar@example.com"
+
+	context := map[string]interface{}{}
+
+	acctest.VcrTest(t, resource.TestCase{
+		// No PreCheck for checking ENVs
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		Steps: []resource.TestStep{
+			{
+				PreConfig: func() {
+					t.Setenv("GOOGLE_IMPERSONATE_SERVICE_ACCOUNT", impersonateServiceAccount)
+				},
+				Config: testAccFwProvider_impersonate_service_account_inEnvsOnly(context),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("data.google_provider_config_plugin_framework.default", "impersonate_service_account", impersonateServiceAccount),
+				),
+			},
+		},
+	})
+}
+
+func testAccFwProvider_impersonate_service_account_emptyStringValidation(t *testing.T) {
+	acctest.SkipIfVcr(t) // Test doesn't interact with API
+
+	impersonateServiceAccountEnvironment := "value-from-envs@example.com"
+
+	// ensure all possible impersonate_service_account env vars set; show they aren't used
+	t.Setenv("GOOGLE_IMPERSONATE_SERVICE_ACCOUNT", impersonateServiceAccountEnvironment)
+
+	context := map[string]interface{}{
+		"impersonate_service_account": "", // empty string used
+	}
+
+	acctest.VcrTest(t, resource.TestCase{
+		// No PreCheck for checking ENVs
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories(t),
+		Steps: []resource.TestStep{
+			{
+				Config:      testAccFwProvider_impersonate_service_account_inProviderBlock(context),
+				PlanOnly:    true,
+				ExpectError: regexp.MustCompile("expected a non-empty string"),
+			},
+		},
+	})
+}
+
+// testAccFwProvider_impersonate_service_account_inProviderBlock allows setting the impersonate_service_account argument in a provider block.
+func testAccFwProvider_impersonate_service_account_inProviderBlock(context map[string]interface{}) string {
+	return acctest.Nprintf(`
+provider "google" {
+	impersonate_service_account = "%{impersonate_service_account}"
+}
+
+data "google_provider_config_plugin_framework" "default" {}
+
+output "impersonate_service_account" {
+  value = data.google_provider_config_plugin_framework.default.impersonate_service_account
+  sensitive = true
+}
+`, context)
+}
+
+// testAccFwProvider_impersonate_service_account_inEnvsOnly allows testing when the impersonate_service_account argument
+// is only supplied via ENVs
+func testAccFwProvider_impersonate_service_account_inEnvsOnly(context map[string]interface{}) string {
+	return acctest.Nprintf(`
+data "google_provider_config_plugin_framework" "default" {}
+
+output "impersonate_service_account" {
+  value = data.google_provider_config_plugin_framework.default.impersonate_service_account
+  sensitive = true
+}
+`, context)
+}

mmv1/third_party/terraform/fwprovider/go/framework_provider_access_token_test.go.tmpl

@@ -73,7 +73,8 @@ func testAccFwProvider_access_token_configPrecedenceOverEnvironmentVariables(t *
 				Config: testAccFwProvider_access_tokenInProviderBlock(context),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttr("data.google_provider_config_plugin_framework.default", "access_token", providerAccessToken),
-				)},
+				),
+			},
 		},
 	})
 }

mmv1/third_party/terraform/fwtransport/framework_config.go.erb

@@ -34,9 +34,10 @@ import (
 
 type FrameworkProviderConfig struct {
 	// Temporary, as we'll replace use of FrameworkProviderConfig with transport_tpg.Config soon
-	// transport_tpg.Config has a Credentials field, hence this change is needed
+	// transport_tpg.Config has a the fields below, hence these changes are needed
 	Credentials                types.String
 	AccessToken                types.String
+	ImpersonateServiceAccount  types.String
 	// End temporary
 
 	BillingProject             types.String
@@ -106,6 +107,7 @@ func (p *FrameworkProviderConfig) LoadAndValidateFramework(ctx context.Context,
 	// Temporary
 	p.Credentials = data.Credentials
 	p.AccessToken = data.AccessToken
+	p.ImpersonateServiceAccount = data.ImpersonateServiceAccount
 	// End temporary
 
 	// Copy values from the ProviderModel struct containing data about the provider configuration (present only when responsing to ConfigureProvider rpc calls)

mmv1/third_party/terraform/provider/provider_access_token_test.go

@@ -68,7 +68,8 @@ func testAccSdkProvider_access_token_configPrecedenceOverEnvironmentVariables(t
 				Config: testAccSdkProvider_access_tokenInProviderBlock(context),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttr("data.google_provider_config_sdk.default", "access_token", providerAccessToken),
-				)},
+				),
+			},
 		},
 	})
 }