helper/resource: compatibility refresh after config mode test step

helper/resource/plugin.go

@@ -123,6 +123,15 @@ func runProviderCommandApply(ctx context.Context, t testing.T, wd *plugintest.Wo
 	return runProviderCommand(ctx, t, wd, factories, fn)
 }
 
+func runProviderCommandApplyRefreshOnly(ctx context.Context, t testing.T, wd *plugintest.WorkingDir, factories *providerFactories) error {
+	t.Helper()
+
+	fn := func() error {
+		return wd.Apply(ctx, tfexec.Refresh(true), tfexec.RefreshOnly(true))
+	}
+	return runProviderCommand(ctx, t, wd, factories, fn)
+}
+
 func runProviderCommandCreatePlan(ctx context.Context, t testing.T, wd *plugintest.WorkingDir, factories *providerFactories) error {
 	t.Helper()
 

helper/resource/testing.go

@@ -2142,3 +2142,6 @@ func checkIfIndexesIntoTypeSetPair(keyFirst, keySecond string, f TestCheckFunc)
 		return err
 	}
 }
+
+// Deprecated: no guarantee of future support.
+var DeprecatedCompatibilityFlagRefreshAfterApply string

helper/resource/testing_new_config.go

@@ -442,5 +442,13 @@ func testStepNewConfig(ctx context.Context, t testing.T, c TestCase, wd *plugint
 		}
 	}
 
+	// I'm sorry, I'm afraid I can't do that. With one exception.
+	if DeprecatedCompatibilityFlagRefreshAfterApply == "unlocked" && !step.Destroy && !step.PlanOnly {
+		err := runProviderCommandApplyRefreshOnly(ctx, t, wd, providers)
+		if err != nil {
+			return fmt.Errorf("Error running apply refresh-only: %w", err)
+		}
+	}
+
 	return nil
 }