test framework: include transformed config before validating config (#33608)

internal/command/test.go

@@ -233,23 +233,6 @@ func (c *TestCommand) Run(rawArgs []string) int {
 		defer stop()
 		defer cancel()
 
-		// Validate the main config first.
-		validateDiags := runner.Validate()
-
-		// Print out any warnings or errors from the validation.
-		view.Diagnostics(nil, nil, validateDiags)
-		if validateDiags.HasErrors() {
-			// Don't try and run the tests if the validation actually failed.
-			// We'll also leave the test status as pending as we actually made
-			// no effort to run the tests.
-			return
-		}
-
-		if runner.Stopped || runner.Cancelled {
-			suite.Status = moduletest.Error
-			return
-		}
-
 		runner.Start(variables)
 	}()
 
@@ -328,64 +311,6 @@ type TestRunner struct {
 	Verbose bool
 }
 
-func (runner *TestRunner) Validate() tfdiags.Diagnostics {
-	log.Printf("[TRACE] TestRunner: Validating configuration.")
-
-	var diags tfdiags.Diagnostics
-
-	diags = diags.Append(runner.validateConfig(runner.Config))
-	if runner.Cancelled || runner.Stopped {
-		return diags
-	}
-
-	// We've validated the main configuration under test. We now need to
-	// validate any other modules that are being executed by the test files.
-	//
-	// We only validate modules that are sourced locally, we're making an
-	// assumption that any remote modules were properly vetted and tested before
-	// being used in our tests.
-	validatedModules := make(map[string]bool)
-
-	for _, file := range runner.Suite.Files {
-		for _, run := range file.Runs {
-
-			if runner.Cancelled || runner.Stopped {
-				return diags
-			}
-
-			// While we're here, also do a quick validation of the config of the
-			// actual run block.
-			diags = diags.Append(run.Config.Validate())
-
-			// If the run block is executing another local module, we should
-			// validate that before we try and run it.
-			if run.Config.ConfigUnderTest != nil {
-
-				if _, ok := run.Config.Module.Source.(addrs.ModuleSourceLocal); !ok {
-					// If it's not a local module, we're not going to validate
-					// it. The idea here is that if we're retrieving this module
-					// from the registry it's not the job of this run of the
-					// testing framework to test it. We should assume it's
-					// working correctly.
-					continue
-				}
-
-				if validated := validatedModules[run.Config.Module.Source.String()]; validated {
-					// We've validated this local module before, so don't do
-					// it again.
-					continue
-				}
-
-				validatedModules[run.Config.Module.Source.String()] = true
-				diags = diags.Append(runner.validateConfig(run.Config.ConfigUnderTest))
-			}
-
-		}
-	}
-
-	return diags
-}
-
 func (runner *TestRunner) Start(globals map[string]backend.UnparsedVariableValue) {
 	var files []string
 	for name := range runner.Suite.Files {
@@ -408,21 +333,32 @@ func (runner *TestRunner) Start(globals map[string]backend.UnparsedVariableValue
 func (runner *TestRunner) ExecuteTestFile(file *moduletest.File, globals map[string]backend.UnparsedVariableValue) {
 	log.Printf("[TRACE] TestRunner: executing test file %s", file.Name)
 
+	printAll := func() {
+		runner.View.File(file)
+		for _, run := range file.Runs {
+			runner.View.Run(run, file)
+		}
+	}
+
 	mgr := new(TestStateManager)
 	mgr.runner = runner
 	mgr.State = states.NewState()
 
 	// We're going to check if the cleanupStates function call will actually
 	// work before we start the test.
-	diags := mgr.prepare(file, globals)
-	if diags.HasErrors() || runner.Cancelled || runner.Stopped {
-		file.Status = moduletest.Error
-		runner.View.File(file)
-		runner.View.Diagnostics(nil, file, diags)
-		for _, run := range file.Runs {
-			run.Status = moduletest.Skip
-			runner.View.Run(run, file)
+	mgr.prepare(file, globals)
+	if runner.Cancelled {
+		return // Don't print anything just stop.
 	}
+
+	if file.Diagnostics.HasErrors() || runner.Stopped {
+		// We can't run this file, but we still want to do nice printing.
+		for _, run := range file.Runs {
+			// The prepare function doesn't touch the run blocks, so we'll
+			// update those so they make sense.
+			run.Status = moduletest.Skip
+		}
+		printAll()
 		return
 	}
 
@@ -468,11 +404,7 @@ func (runner *TestRunner) ExecuteTestFile(file *moduletest.File, globals map[str
 		file.Status = file.Status.Merge(run.Status)
 	}
 
-	runner.View.File(file)
-	runner.View.Diagnostics(nil, file, diags) // Print out any warnings from the preparation.
-	for _, run := range file.Runs {
-		runner.View.Run(run, file)
-	}
+	printAll()
 }
 
 func (runner *TestRunner) ExecuteTestRun(mgr *TestStateManager, run *moduletest.Run, file *moduletest.File, state *states.State, config *configs.Config, globals map[string]backend.UnparsedVariableValue) *states.State {
@@ -519,7 +451,12 @@ func (runner *TestRunner) ExecuteTestRun(mgr *TestStateManager, run *moduletest.
 		SkipRefresh:        !run.Config.Options.Refresh,
 		ExternalReferences: references,
 	}, run.Config.Command, globals)
+	if plan != nil {
+		// If the returned plan is nil, then the something went wrong before
+		// we could even attempt to plan or apply the expected failures, so we
+		// won't validate them if the plan is nil.
 		diags = run.ValidateExpectedFailures(diags)
+	}
 	run.Diagnostics = run.Diagnostics.Append(diags)
 
 	if runner.Cancelled {
@@ -586,21 +523,32 @@ func (runner *TestRunner) ExecuteTestRun(mgr *TestStateManager, run *moduletest.
 	return state
 }
 
-func (runner *TestRunner) validateConfig(config *configs.Config) tfdiags.Diagnostics {
-	log.Printf("[TRACE] TestRunner: validating specific config %s", config.Path)
+func (runner *TestRunner) validateFile(file *moduletest.File) {
+	log.Printf("[TRACE] TestRunner: validating config for %s", file.Name)
 
-	var diags tfdiags.Diagnostics
+	config := runner.Config
+
+	reset, transformDiags := config.TransformForTest(nil, file.Config)
+	defer reset()
+	file.Diagnostics = file.Diagnostics.Append(transformDiags)
+
+	if transformDiags.HasErrors() {
+		file.Status = moduletest.Error
+		return
+	}
 
 	tfCtxOpts, err := runner.command.contextOpts()
-	diags = diags.Append(err)
+	file.Diagnostics = file.Diagnostics.Append(err)
 	if err != nil {
-		return diags
+		file.Status = moduletest.Error
+		return
 	}
 
 	tfCtx, ctxDiags := terraform.NewContext(tfCtxOpts)
-	diags = diags.Append(ctxDiags)
+	file.Diagnostics = file.Diagnostics.Append(ctxDiags)
 	if ctxDiags.HasErrors() {
-		return diags
+		file.Status = moduletest.Error
+		return
 	}
 
 	runningCtx, done := context.WithCancel(context.Background())
@@ -609,17 +557,22 @@ func (runner *TestRunner) validateConfig(config *configs.Config) tfdiags.Diagnos
 	go func() {
 		defer logging.PanicHandler()
 		defer done()
-		validateDiags = tfCtx.Validate(config)
-	}()
-	// We don't need to pass in any metadata here, as we're only validating
-	// so if something is cancelled it doesn't matter. We only pass in the
-	// metadata so we can print context around the cancellation which we don't
-	// need to do in this case.
-	waitDiags, _ := runner.wait(tfCtx, runningCtx, nil, nil, nil, nil)
 
-	diags = diags.Append(validateDiags)
-	diags = diags.Append(waitDiags)
-	return diags
+		log.Printf("[DEBUG] TestRunner: starting validate for %s", file.Name)
+		validateDiags = tfCtx.Validate(config)
+		log.Printf("[DEBUG] TestRunner: completed validate for %s", file.Name)
+	}()
+	// We don't pass in a manager or any created resources here since we are
+	// only validating. If something goes wrong, there will be no state we need
+	// to worry about cleaning up manually. So the manager and created resources
+	// can be empty.
+	waitDiags, _ := runner.wait(tfCtx, runningCtx, nil, nil, file, nil)
+
+	file.Diagnostics = file.Diagnostics.Append(validateDiags)
+	file.Diagnostics = file.Diagnostics.Append(waitDiags)
+	if validateDiags.HasErrors() || waitDiags.HasErrors() {
+		file.Status = moduletest.Error
+	}
 }
 
 // execute executes Terraform plan and apply operations for the given arguments.
@@ -639,9 +592,19 @@ func (runner *TestRunner) execute(mgr *TestStateManager, run *moduletest.Run, fi
 		return nil, nil, state, nil
 	}
 
-	// First, transform the config for the given test run and test file.
-
 	var diags tfdiags.Diagnostics
+
+	// First, do a quick validation of the run blocks config.
+
+	if run != nil {
+		diags = diags.Append(run.Config.Validate())
+		if diags.HasErrors() {
+			return nil, nil, state, diags
+		}
+	}
+
+	// Second, transform the config for the given test run and test file.
+
 	if run == nil {
 		reset, cfgDiags := config.TransformForTest(nil, file.Config)
 		defer reset()
@@ -655,16 +618,7 @@ func (runner *TestRunner) execute(mgr *TestStateManager, run *moduletest.Run, fi
 		return nil, nil, state, diags
 	}
 
-	// Second, gather any variables and give them to the plan options.
-
-	variables, variableDiags := buildInputVariablesForTest(run, file, config, globals)
-	diags = diags.Append(variableDiags)
-	if variableDiags.HasErrors() {
-		return nil, nil, state, diags
-	}
-	opts.SetVariables = variables
-
-	// Third, execute planning stage.
+	// Third, do a full validation of the now transformed config.
 
 	tfCtxOpts, err := runner.command.contextOpts()
 	diags = diags.Append(err)
@@ -680,6 +634,52 @@ func (runner *TestRunner) execute(mgr *TestStateManager, run *moduletest.Run, fi
 
 	runningCtx, done := context.WithCancel(context.Background())
 
+	var validateDiags tfdiags.Diagnostics
+	go func() {
+		defer logging.PanicHandler()
+		defer done()
+
+		log.Printf("[DEBUG] TestRunner: starting validate for %s", identifier)
+		validateDiags = tfCtx.Validate(config)
+		log.Printf("[DEBUG] TestRunner: completed validate for %s", identifier)
+	}()
+	waitDiags, cancelled := runner.wait(tfCtx, runningCtx, mgr, run, file, nil)
+	validateDiags = validateDiags.Append(waitDiags)
+
+	diags = diags.Append(validateDiags)
+	if validateDiags.HasErrors() {
+		// Either the plan errored, or we only wanted to see the plan. Either
+		// way, just return what we have: The plan and diagnostics from making
+		// it and the unchanged state.
+		return tfCtx, nil, state, diags
+	}
+
+	if cancelled {
+		log.Printf("[DEBUG] TestRunner: skipping plan and apply stage for %s due to cancellation", identifier)
+		// If the execution was cancelled during the plan, we'll exit here to
+		// stop the plan being applied and using more time.
+		return tfCtx, nil, state, diags
+	}
+
+	// Fourth, gather any variables and give them to the plan options.
+
+	variables, variableDiags := buildInputVariablesForTest(run, file, config, globals)
+	diags = diags.Append(variableDiags)
+	if variableDiags.HasErrors() {
+		return nil, nil, state, diags
+	}
+	opts.SetVariables = variables
+
+	// Fifth, execute planning stage.
+
+	tfCtx, ctxDiags = terraform.NewContext(tfCtxOpts)
+	diags = diags.Append(ctxDiags)
+	if ctxDiags.HasErrors() {
+		return nil, nil, state, diags
+	}
+
+	runningCtx, done = context.WithCancel(context.Background())
+
 	var plan *plans.Plan
 	var planDiags tfdiags.Diagnostics
 	go func() {
@@ -690,7 +690,7 @@ func (runner *TestRunner) execute(mgr *TestStateManager, run *moduletest.Run, fi
 		plan, planDiags = tfCtx.Plan(config, state, opts)
 		log.Printf("[DEBUG] TestRunner: completed plan for %s", identifier)
 	}()
-	waitDiags, cancelled := runner.wait(tfCtx, runningCtx, mgr, run, file, nil)
+	waitDiags, cancelled = runner.wait(tfCtx, runningCtx, mgr, run, file, nil)
 	planDiags = planDiags.Append(waitDiags)
 
 	diags = diags.Append(planDiags)
@@ -721,7 +721,7 @@ func (runner *TestRunner) execute(mgr *TestStateManager, run *moduletest.Run, fi
 	}
 	diags = filteredDiags
 
-	// Fourth, execute apply stage.
+	// Sixth, execute apply stage.
 	tfCtx, ctxDiags = terraform.NewContext(tfCtxOpts)
 	diags = diags.Append(ctxDiags)
 	if ctxDiags.HasErrors() {
@@ -879,15 +879,22 @@ type TestModuleState struct {
 // successfully execute all our run blocks and then find we cannot perform any
 // cleanup. We want to use this function to check that our cleanup can happen
 // using only the information available within the file.
-func (manager *TestStateManager) prepare(file *moduletest.File, globals map[string]backend.UnparsedVariableValue) tfdiags.Diagnostics {
+func (manager *TestStateManager) prepare(file *moduletest.File, globals map[string]backend.UnparsedVariableValue) {
+
+	// First, we're going to check we have definitions for variables at the
+	// file level.
 
-	// For now, the only thing we care about is making sure all the required
-	// variables have values.
 	_, diags := buildInputVariablesForTest(nil, file, manager.runner.Config, globals)
 
-	// Return the sum of diagnostics that might indicate a problem for any
-	// future attempted cleanup.
-	return diags
+	file.Diagnostics = file.Diagnostics.Append(diags)
+	if diags.HasErrors() {
+		file.Status = moduletest.Error
+	}
+
+	// Second, we'll validate that the default provider configurations actually
+	// pass a validate operation.
+
+	manager.runner.validateFile(file)
 }
 
 func (manager *TestStateManager) cleanupStates(file *moduletest.File, globals map[string]backend.UnparsedVariableValue) {

internal/command/test_test.go

@@ -120,6 +120,10 @@ func TestTest(t *testing.T) {
 			expected: "0 passed, 1 failed.",
 			code:     1,
 		},
+		"no_providers_in_main": {
+			expected: "1 passed, 0 failed",
+			code:     0,
+		},
 	}
 	for name, tc := range tcs {
 		t.Run(name, func(t *testing.T) {
@@ -500,31 +504,17 @@ Success! 2 passed, 0 failed.
 }
 
 func TestTest_ValidatesBeforeExecution(t *testing.T) {
-	td := t.TempDir()
-	testCopyDir(t, testFixturePath(path.Join("test", "invalid")), td)
-	defer testChdir(t, td)()
+	tcs := map[string]struct {
+		expectedOut string
+		expectedErr string
+	}{
+		"invalid": {
+			expectedOut: `main.tftest.hcl... fail
+  run "invalid"... fail
 
-	provider := testing_command.NewProvider(nil)
-	view, done := testView(t)
-
-	c := &TestCommand{
-		Meta: Meta{
-			testingOverrides: metaOverridesForProvider(provider.Provider),
-			View:             view,
-		},
-	}
-
-	code := c.Run([]string{"-verbose", "-no-color"})
-	output := done(t)
-
-	if code != 1 {
-		t.Errorf("expected status code 1 but got %d", code)
-	}
-
-	expectedOut := `
-Executed 0 tests.
-`
-	expectedErr := `
+Failure! 0 passed, 1 failed.
+`,
+			expectedErr: `
 Error: Invalid ` + "`expect_failures`" + ` reference
 
   on main.tftest.hcl line 5, in run "invalid":
@@ -533,27 +523,84 @@ Error: Invalid ` + "`expect_failures`" + ` reference
 You cannot expect failures from local.my_value. You can only expect failures
 from checkable objects such as input variables, output values, check blocks,
 managed resources and data sources.
-`
+`,
+		},
+		"invalid-module": {
+			expectedOut: `main.tftest.hcl... fail
+  run "invalid"... fail
+  run "test"... skip
 
-	actualOut := output.Stdout()
-	actualErr := output.Stderr()
+Failure! 0 passed, 1 failed, 1 skipped.
+`,
+			expectedErr: `
+Error: Reference to undeclared input variable
 
-	if diff := cmp.Diff(actualOut, expectedOut); len(diff) > 0 {
-		t.Errorf("output didn't match expected:\nexpected:\n%s\nactual:\n%s\ndiff:\n%s", expectedOut, actualOut, diff)
+  on setup/main.tf line 3, in resource "test_resource" "setup":
+   3:     value = var.not_real // Oh no!
+
+An input variable with the name "not_real" has not been declared. This
+variable can be declared with a variable "not_real" {} block.
+`,
+		},
+		"missing-provider": {
+			expectedOut: `main.tftest.hcl... fail
+  run "passes_validation"... skip
+
+Failure! 0 passed, 0 failed, 1 skipped.
+`,
+			expectedErr: `
+Error: Provider configuration not present
+
+To work with test_resource.secondary its original provider configuration at
+provider["registry.terraform.io/hashicorp/test"].secondary is required, but
+it has been removed. This occurs when a provider configuration is removed
+while objects created by that provider still exist in the state. Re-add the
+provider configuration to destroy test_resource.secondary, after which you
+can remove the provider configuration again.
+`,
+		},
+		"missing-provider-in-run-block": {
+			expectedOut: `main.tftest.hcl... fail
+  run "passes_validation"... fail
+
+Failure! 0 passed, 1 failed.
+`,
+			expectedErr: `
+Error: Provider configuration not present
+
+To work with test_resource.secondary its original provider configuration at
+provider["registry.terraform.io/hashicorp/test"].secondary is required, but
+it has been removed. This occurs when a provider configuration is removed
+while objects created by that provider still exist in the state. Re-add the
+provider configuration to destroy test_resource.secondary, after which you
+can remove the provider configuration again.
+`,
+		},
+		"missing-provider-in-test-module": {
+			expectedOut: `main.tftest.hcl... fail
+  run "passes_validation_primary"... pass
+  run "passes_validation_secondary"... fail
+
+Failure! 1 passed, 1 failed.
+`,
+			expectedErr: `
+Error: Provider configuration not present
+
+To work with test_resource.secondary its original provider configuration at
+provider["registry.terraform.io/hashicorp/test"].secondary is required, but
+it has been removed. This occurs when a provider configuration is removed
+while objects created by that provider still exist in the state. Re-add the
+provider configuration to destroy test_resource.secondary, after which you
+can remove the provider configuration again.
+`,
+		},
 	}
 
-	if diff := cmp.Diff(actualErr, expectedErr); len(diff) > 0 {
-		t.Errorf("error didn't match expected:\nexpected:\n%s\nactual:\n%s\ndiff:\n%s", expectedErr, actualErr, diff)
-	}
+	for file, tc := range tcs {
+		t.Run(file, func(t *testing.T) {
 
-	if provider.ResourceCount() > 0 {
-		t.Errorf("should have deleted all resources on completion but left %v", provider.ResourceString())
-	}
-}
-
-func TestTest_ValidatesLocalModulesBeforeExecution(t *testing.T) {
 			td := t.TempDir()
-	testCopyDir(t, testFixturePath(path.Join("test", "invalid-module")), td)
+			testCopyDir(t, testFixturePath(path.Join("test", file)), td)
 			defer testChdir(t, td)()
 
 			provider := testing_command.NewProvider(nil)
@@ -583,32 +630,19 @@ func TestTest_ValidatesLocalModulesBeforeExecution(t *testing.T) {
 				t.Fatalf("expected status code 0 but got %d: %s", code, ui.ErrorWriter)
 			}
 
-	command := &TestCommand{
+			c := &TestCommand{
 				Meta: meta,
 			}
 
-	code := command.Run([]string{"-no-color"})
+			code := c.Run([]string{"-no-color"})
 			output := done(t)
 
 			if code != 1 {
 				t.Errorf("expected status code 1 but got %d", code)
 			}
 
-	expectedOut := `
-Executed 0 tests.
-`
-	expectedErr := `
-Error: Reference to undeclared input variable
-
-  on setup/main.tf line 3, in resource "test_resource" "setup":
-   3:     value = var.not_real // Oh no!
-
-An input variable with the name "not_real" has not been declared. This
-variable can be declared with a variable "not_real" {} block.
-`
-
-	actualOut := output.Stdout()
-	actualErr := output.Stderr()
+			actualOut, expectedOut := output.Stdout(), tc.expectedOut
+			actualErr, expectedErr := output.Stderr(), tc.expectedErr
 
 			if diff := cmp.Diff(actualOut, expectedOut); len(diff) > 0 {
 				t.Errorf("output didn't match expected:\nexpected:\n%s\nactual:\n%s\ndiff:\n%s", expectedOut, actualOut, diff)
@@ -621,9 +655,7 @@ variable can be declared with a variable "not_real" {} block.
 			if provider.ResourceCount() > 0 {
 				t.Errorf("should have deleted all resources on completion but left %v", provider.ResourceString())
 			}
-
-	if provider.ResourceCount() > 0 {
-		t.Errorf("should have deleted all resources on completion but left %v", provider.ResourceString())
+		})
 	}
 }
 

internal/command/testdata/test/missing-provider-in-run-block/main.tf

@@ -0,0 +1,17 @@
+terraform {
+  required_providers {
+    test = {
+      source = "hashicorp/test"
+      configuration_aliases = [ test.secondary ]
+    }
+  }
+}
+
+resource "test_resource" "primary" {
+  value = "foo"
+}
+
+resource "test_resource" "secondary" {
+  provider = test.secondary
+  value = "bar"
+}

internal/command/testdata/test/missing-provider-in-run-block/main.tftest.hcl

@@ -0,0 +1,23 @@
+
+provider "test" {}
+
+provider "test" {
+  alias = "secondary"
+}
+
+run "passes_validation" {
+
+  providers = {
+    test = test
+  }
+
+  assert {
+    condition = test_resource.primary.value == "foo"
+    error_message = "primary contains invalid value"
+  }
+
+  assert {
+    condition = test_resource.secondary.value == "bar"
+    error_message = "secondary contains invalid value"
+  }
+}

internal/command/testdata/test/missing-provider-in-test-module/main.tf

@@ -0,0 +1,3 @@
+resource "test_resource" "primary" {
+  value = "foo"
+}

internal/command/testdata/test/missing-provider-in-test-module/main.tftest.hcl

@@ -0,0 +1,40 @@
+
+provider "test" {}
+
+provider "test" {
+  alias = "secondary"
+}
+
+run "passes_validation_primary" {
+
+  providers = {
+    test = test
+  }
+
+  assert {
+    condition = test_resource.primary.value == "foo"
+    error_message = "primary contains invalid value"
+  }
+
+}
+
+run "passes_validation_secondary" {
+
+  providers = {
+    test = test
+  }
+
+  module {
+    source = "./setup"
+  }
+
+  assert {
+    condition = test_resource.primary.value == "foo"
+    error_message = "primary contains invalid value"
+  }
+
+  assert {
+    condition = test_resource.secondary.value == "bar"
+    error_message = "secondary contains invalid value"
+  }
+}

internal/command/testdata/test/missing-provider-in-test-module/setup/main.tf

@@ -0,0 +1,17 @@
+terraform {
+  required_providers {
+    test = {
+      source = "hashicorp/test"
+      configuration_aliases = [ test.secondary ]
+    }
+  }
+}
+
+resource "test_resource" "primary" {
+  value = "foo"
+}
+
+resource "test_resource" "secondary" {
+  provider = test.secondary
+  value = "bar"
+}

internal/command/testdata/test/missing-provider/main.tf

@@ -0,0 +1,17 @@
+terraform {
+  required_providers {
+    test = {
+      source = "hashicorp/test"
+      configuration_aliases = [ test.secondary ]
+    }
+  }
+}
+
+resource "test_resource" "primary" {
+  value = "foo"
+}
+
+resource "test_resource" "secondary" {
+  provider = test.secondary
+  value = "bar"
+}

internal/command/testdata/test/missing-provider/main.tftest.hcl

@@ -0,0 +1,14 @@
+
+provider "test" {}
+
+run "passes_validation" {
+  assert {
+    condition = test_resource.primary.value == "foo"
+    error_message = "primary contains invalid value"
+  }
+
+  assert {
+    condition = test_resource.secondary.value == "bar"
+    error_message = "secondary contains invalid value"
+  }
+}

internal/command/testdata/test/no_providers_in_main/main.tf

@@ -0,0 +1,19 @@
+
+terraform {
+  required_providers {
+    test = {
+      source = "hashicorp/test"
+      configuration_aliases = [test.primary, test.secondary]
+    }
+  }
+}
+
+resource "test_resource" "primary" {
+  provider = test.primary
+  value = "foo"
+}
+
+resource "test_resource" "secondary" {
+  provider = test.secondary
+  value = "bar"
+}

internal/command/testdata/test/no_providers_in_main/main.tftest.hcl

@@ -0,0 +1,20 @@
+
+provider "test" {
+  alias = "primary"
+}
+
+provider "test" {
+  alias = "secondary"
+}
+
+run "passes_validation" {
+  assert {
+    condition = test_resource.primary.value == "foo"
+    error_message = "primary contains invalid value"
+  }
+
+  assert {
+    condition = test_resource.secondary.value == "bar"
+    error_message = "secondary contains invalid value"
+  }
+}

internal/command/views/test.go

@@ -130,6 +130,7 @@ func (t *TestHuman) Conclusion(suite *moduletest.Suite) {
 
 func (t *TestHuman) File(file *moduletest.File) {
 	t.view.streams.Printf("%s... %s\n", file.Name, colorizeTestStatus(file.Status, t.view.colorize))
+	t.Diagnostics(nil, file, file.Diagnostics)
 }
 
 func (t *TestHuman) Run(run *moduletest.Run, file *moduletest.File) {
@@ -388,6 +389,7 @@ func (t *TestJSON) File(file *moduletest.File) {
 		"type", json.MessageTestFile,
 		json.MessageTestFile, json.TestFileStatus{file.Name, json.ToTestStatus(file.Status)},
 		"@testfile", file.Name)
+	t.Diagnostics(nil, file, file.Diagnostics)
 }
 
 func (t *TestJSON) Run(run *moduletest.Run, file *moduletest.File) {

internal/moduletest/file.go

@@ -1,6 +1,9 @@
 package moduletest
 
-import "github.com/hashicorp/terraform/internal/configs"
+import (
+	"github.com/hashicorp/terraform/internal/configs"
+	"github.com/hashicorp/terraform/internal/tfdiags"
+)
 
 type File struct {
 	Config *configs.TestFile
@@ -9,4 +12,6 @@ type File struct {
 	Status Status
 
 	Runs []*Run
+
+	Diagnostics tfdiags.Diagnostics
 }