echoprovider: Fix bug where Terraform v1.12.1 would return an error indicating GetResourceIdentitySchemas was not implemented (#512)

* implement resource identity schema + changelogs

* update plugin-testing

* revert plugin-go

Author: austinvalle

.changes/unreleased/BUG FIXES-20250521-152657.yaml

@@ -0,0 +1,5 @@
+kind: BUG FIXES
+body: 'echoprovider: Fixed bug where Terraform v1.12+ would return an error message indicating the provider doesn''t support `GetResourceIdentitySchemas`.'
+time: 2025-05-21T15:26:57.058404-04:00
+custom:
+    Issue: "512"

echoprovider/server.go

@@ -406,3 +406,19 @@ func (e *echoProviderServer) CloseEphemeralResource(ctx context.Context, req *tf
 func (e *echoProviderServer) ValidateEphemeralResourceConfig(ctx context.Context, req *tfprotov6.ValidateEphemeralResourceConfigRequest) (*tfprotov6.ValidateEphemeralResourceConfigResponse, error) {
 	return &tfprotov6.ValidateEphemeralResourceConfigResponse{}, nil
 }
+
+func (e *echoProviderServer) GetResourceIdentitySchemas(context.Context, *tfprotov6.GetResourceIdentitySchemasRequest) (*tfprotov6.GetResourceIdentitySchemasResponse, error) {
+	return &tfprotov6.GetResourceIdentitySchemasResponse{}, nil
+}
+
+func (e *echoProviderServer) UpgradeResourceIdentity(context.Context, *tfprotov6.UpgradeResourceIdentityRequest) (*tfprotov6.UpgradeResourceIdentityResponse, error) {
+	return &tfprotov6.UpgradeResourceIdentityResponse{
+		Diagnostics: []*tfprotov6.Diagnostic{
+			{
+				Severity: tfprotov6.DiagnosticSeverityError,
+				Summary:  "Unsupported UpgradeResourceIdentity Operation",
+				Detail:   "Resource Identity is not supported by this provider.",
+			},
+		},
+	}, nil
+}

internal/testing/testsdk/providerserver/providerserver_protov5.go

@@ -134,3 +134,11 @@ func (s Protov5ProviderServer) CloseEphemeralResource(ctx context.Context, req *
 func (s Protov5ProviderServer) ValidateEphemeralResourceConfig(ctx context.Context, req *tfprotov5.ValidateEphemeralResourceConfigRequest) (*tfprotov5.ValidateEphemeralResourceConfigResponse, error) {
 	return &tfprotov5.ValidateEphemeralResourceConfigResponse{}, nil
 }
+
+func (s Protov5ProviderServer) GetResourceIdentitySchemas(context.Context, *tfprotov5.GetResourceIdentitySchemasRequest) (*tfprotov5.GetResourceIdentitySchemasResponse, error) {
+	return &tfprotov5.GetResourceIdentitySchemasResponse{}, nil
+}
+
+func (s Protov5ProviderServer) UpgradeResourceIdentity(context.Context, *tfprotov5.UpgradeResourceIdentityRequest) (*tfprotov5.UpgradeResourceIdentityResponse, error) {
+	return &tfprotov5.UpgradeResourceIdentityResponse{}, nil
+}