package initwd import ( "flag" "fmt" "io/ioutil" "log" "os" "path/filepath" "strings" "testing" "github.com/go-test/deep" version "github.com/hashicorp/go-version" "github.com/hashicorp/terraform/configs" "github.com/hashicorp/terraform/configs/configload" "github.com/hashicorp/terraform/helper/logging" "github.com/hashicorp/terraform/registry" "github.com/hashicorp/terraform/tfdiags" ) func TestMain(m *testing.M) { flag.Parse() if testing.Verbose() { // if we're verbose, use the logging requested by TF_LOG logging.SetOutput() } else { // otherwise silence all logs log.SetOutput(ioutil.Discard) } os.Exit(m.Run()) } func TestModuleInstaller(t *testing.T) { fixtureDir := filepath.Clean("test-fixtures/local-modules") dir, done := tempChdir(t, fixtureDir) defer done() hooks := &testInstallHooks{} modulesDir := filepath.Join(dir, ".terraform/modules") inst := NewModuleInstaller(modulesDir, nil) _, diags := inst.InstallModules(".", false, hooks) assertNoDiagnostics(t, diags) wantCalls := []testInstallHookCall{ { Name: "Install", ModuleAddr: "child_a", PackageAddr: "", LocalPath: "child_a", }, { Name: "Install", ModuleAddr: "child_a.child_b", PackageAddr: "", LocalPath: "child_a/child_b", }, } if assertResultDeepEqual(t, hooks.Calls, wantCalls) { return } loader, err := configload.NewLoader(&configload.Config{ ModulesDir: modulesDir, }) if err != nil { t.Fatal(err) } // Make sure the configuration is loadable now. // (This ensures that correct information is recorded in the manifest.) config, loadDiags := loader.LoadConfig(".") assertNoDiagnostics(t, tfdiags.Diagnostics{}.Append(loadDiags)) wantTraces := map[string]string{ "": "in root module", "child_a": "in child_a module", "child_a.child_b": "in child_b module", } gotTraces := map[string]string{} config.DeepEach(func(c *configs.Config) { path := strings.Join(c.Path, ".") if c.Module.Variables["v"] == nil { gotTraces[path] = "" return } varDesc := c.Module.Variables["v"].Description gotTraces[path] = varDesc }) assertResultDeepEqual(t, gotTraces, wantTraces) } func TestModuleInstaller_error(t *testing.T) { fixtureDir := filepath.Clean("test-fixtures/local-module-error") dir, done := tempChdir(t, fixtureDir) defer done() hooks := &testInstallHooks{} modulesDir := filepath.Join(dir, ".terraform/modules") inst := NewModuleInstaller(modulesDir, nil) _, diags := inst.InstallModules(".", false, hooks) if !diags.HasErrors() { t.Fatal("expected error") } else { assertDiagnosticSummary(t, diags, "Module not found") } } func TestLoaderInstallModules_registry(t *testing.T) { if os.Getenv("TF_ACC") == "" { t.Skip("this test accesses registry.terraform.io and github.com; set TF_ACC=1 to run it") } fixtureDir := filepath.Clean("test-fixtures/registry-modules") dir, done := tempChdir(t, fixtureDir) defer done() hooks := &testInstallHooks{} modulesDir := filepath.Join(dir, ".terraform/modules") inst := NewModuleInstaller(modulesDir, registry.NewClient(nil, nil)) _, diags := inst.InstallModules(dir, false, hooks) assertNoDiagnostics(t, diags) v := version.Must(version.NewVersion("0.0.1")) wantCalls := []testInstallHookCall{ // the configuration builder visits each level of calls in lexicographical // order by name, so the following list is kept in the same order. // acctest_child_a accesses //modules/child_a directly { Name: "Download", ModuleAddr: "acctest_child_a", PackageAddr: "hashicorp/module-installer-acctest/aws", // intentionally excludes the subdir because we're downloading the whole package here Version: v, }, { Name: "Install", ModuleAddr: "acctest_child_a", Version: v, LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_a/hashicorp-terraform-aws-module-installer-acctest-853d038/modules/child_a"), }, // acctest_child_a.child_b // (no download because it's a relative path inside acctest_child_a) { Name: "Install", ModuleAddr: "acctest_child_a.child_b", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_a/hashicorp-terraform-aws-module-installer-acctest-853d038/modules/child_b"), }, // acctest_child_b accesses //modules/child_b directly { Name: "Download", ModuleAddr: "acctest_child_b", PackageAddr: "hashicorp/module-installer-acctest/aws", // intentionally excludes the subdir because we're downloading the whole package here Version: v, }, { Name: "Install", ModuleAddr: "acctest_child_b", Version: v, LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_b/hashicorp-terraform-aws-module-installer-acctest-853d038/modules/child_b"), }, // acctest_root { Name: "Download", ModuleAddr: "acctest_root", PackageAddr: "hashicorp/module-installer-acctest/aws", Version: v, }, { Name: "Install", ModuleAddr: "acctest_root", Version: v, LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root/hashicorp-terraform-aws-module-installer-acctest-853d038"), }, // acctest_root.child_a // (no download because it's a relative path inside acctest_root) { Name: "Install", ModuleAddr: "acctest_root.child_a", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root/hashicorp-terraform-aws-module-installer-acctest-853d038/modules/child_a"), }, // acctest_root.child_a.child_b // (no download because it's a relative path inside acctest_root, via acctest_root.child_a) { Name: "Install", ModuleAddr: "acctest_root.child_a.child_b", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root/hashicorp-terraform-aws-module-installer-acctest-853d038/modules/child_b"), }, } if assertResultDeepEqual(t, hooks.Calls, wantCalls) { return } loader, err := configload.NewLoader(&configload.Config{ ModulesDir: modulesDir, }) if err != nil { t.Fatal(err) } // Make sure the configuration is loadable now. // (This ensures that correct information is recorded in the manifest.) config, loadDiags := loader.LoadConfig(".") assertNoDiagnostics(t, tfdiags.Diagnostics{}.Append(loadDiags)) wantTraces := map[string]string{ "": "in local caller for registry-modules", "acctest_root": "in root module", "acctest_root.child_a": "in child_a module", "acctest_root.child_a.child_b": "in child_b module", "acctest_child_a": "in child_a module", "acctest_child_a.child_b": "in child_b module", "acctest_child_b": "in child_b module", } gotTraces := map[string]string{} config.DeepEach(func(c *configs.Config) { path := strings.Join(c.Path, ".") if c.Module.Variables["v"] == nil { gotTraces[path] = "" return } varDesc := c.Module.Variables["v"].Description gotTraces[path] = varDesc }) assertResultDeepEqual(t, gotTraces, wantTraces) } func TestLoaderInstallModules_goGetter(t *testing.T) { if os.Getenv("TF_ACC") == "" { t.Skip("this test accesses github.com; set TF_ACC=1 to run it") } fixtureDir := filepath.Clean("test-fixtures/go-getter-modules") dir, done := tempChdir(t, fixtureDir) defer done() hooks := &testInstallHooks{} modulesDir := filepath.Join(dir, ".terraform/modules") inst := NewModuleInstaller(modulesDir, registry.NewClient(nil, nil)) _, diags := inst.InstallModules(dir, false, hooks) assertNoDiagnostics(t, diags) wantCalls := []testInstallHookCall{ // the configuration builder visits each level of calls in lexicographical // order by name, so the following list is kept in the same order. // acctest_child_a accesses //modules/child_a directly { Name: "Download", ModuleAddr: "acctest_child_a", PackageAddr: "github.com/hashicorp/terraform-aws-module-installer-acctest?ref=v0.0.1", // intentionally excludes the subdir because we're downloading the whole repo here }, { Name: "Install", ModuleAddr: "acctest_child_a", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_a/modules/child_a"), }, // acctest_child_a.child_b // (no download because it's a relative path inside acctest_child_a) { Name: "Install", ModuleAddr: "acctest_child_a.child_b", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_a/modules/child_b"), }, // acctest_child_b accesses //modules/child_b directly { Name: "Download", ModuleAddr: "acctest_child_b", PackageAddr: "github.com/hashicorp/terraform-aws-module-installer-acctest?ref=v0.0.1", // intentionally excludes the subdir because we're downloading the whole package here }, { Name: "Install", ModuleAddr: "acctest_child_b", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_child_b/modules/child_b"), }, // acctest_root { Name: "Download", ModuleAddr: "acctest_root", PackageAddr: "github.com/hashicorp/terraform-aws-module-installer-acctest?ref=v0.0.1", }, { Name: "Install", ModuleAddr: "acctest_root", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root"), }, // acctest_root.child_a // (no download because it's a relative path inside acctest_root) { Name: "Install", ModuleAddr: "acctest_root.child_a", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root/modules/child_a"), }, // acctest_root.child_a.child_b // (no download because it's a relative path inside acctest_root, via acctest_root.child_a) { Name: "Install", ModuleAddr: "acctest_root.child_a.child_b", LocalPath: filepath.Join(dir, ".terraform/modules/acctest_root/modules/child_b"), }, } if assertResultDeepEqual(t, hooks.Calls, wantCalls) { return } loader, err := configload.NewLoader(&configload.Config{ ModulesDir: modulesDir, }) if err != nil { t.Fatal(err) } // Make sure the configuration is loadable now. // (This ensures that correct information is recorded in the manifest.) config, loadDiags := loader.LoadConfig(".") assertNoDiagnostics(t, tfdiags.Diagnostics{}.Append(loadDiags)) wantTraces := map[string]string{ "": "in local caller for go-getter-modules", "acctest_root": "in root module", "acctest_root.child_a": "in child_a module", "acctest_root.child_a.child_b": "in child_b module", "acctest_child_a": "in child_a module", "acctest_child_a.child_b": "in child_b module", "acctest_child_b": "in child_b module", } gotTraces := map[string]string{} config.DeepEach(func(c *configs.Config) { path := strings.Join(c.Path, ".") if c.Module.Variables["v"] == nil { gotTraces[path] = "" return } varDesc := c.Module.Variables["v"].Description gotTraces[path] = varDesc }) assertResultDeepEqual(t, gotTraces, wantTraces) } type testInstallHooks struct { Calls []testInstallHookCall } type testInstallHookCall struct { Name string ModuleAddr string PackageAddr string Version *version.Version LocalPath string } func (h *testInstallHooks) Download(moduleAddr, packageAddr string, version *version.Version) { h.Calls = append(h.Calls, testInstallHookCall{ Name: "Download", ModuleAddr: moduleAddr, PackageAddr: packageAddr, Version: version, }) } func (h *testInstallHooks) Install(moduleAddr string, version *version.Version, localPath string) { h.Calls = append(h.Calls, testInstallHookCall{ Name: "Install", ModuleAddr: moduleAddr, Version: version, LocalPath: localPath, }) } // tempChdir copies the contents of the given directory to a temporary // directory and changes the test process's current working directory to // point to that directory. Also returned is a function that should be // called at the end of the test (e.g. via "defer") to restore the previous // working directory. // // Tests using this helper cannot safely be run in parallel with other tests. func tempChdir(t *testing.T, sourceDir string) (string, func()) { t.Helper() tmpDir, err := ioutil.TempDir("", "terraform-configload") if err != nil { t.Fatalf("failed to create temporary directory: %s", err) return "", nil } if err := copyDir(tmpDir, sourceDir); err != nil { t.Fatalf("failed to copy fixture to temporary directory: %s", err) return "", nil } oldDir, err := os.Getwd() if err != nil { t.Fatalf("failed to determine current working directory: %s", err) return "", nil } err = os.Chdir(tmpDir) if err != nil { t.Fatalf("failed to switch to temp dir %s: %s", tmpDir, err) return "", nil } // Most of the tests need this, so we'll make it just in case. os.MkdirAll(filepath.Join(tmpDir, ".terraform/modules"), os.ModePerm) t.Logf("tempChdir switched to %s after copying from %s", tmpDir, sourceDir) return tmpDir, func() { err := os.Chdir(oldDir) if err != nil { panic(fmt.Errorf("failed to restore previous working directory %s: %s", oldDir, err)) } if os.Getenv("TF_CONFIGLOAD_TEST_KEEP_TMP") == "" { os.RemoveAll(tmpDir) } } } func assertNoDiagnostics(t *testing.T, diags tfdiags.Diagnostics) bool { t.Helper() return assertDiagnosticCount(t, diags, 0) } func assertDiagnosticCount(t *testing.T, diags tfdiags.Diagnostics, want int) bool { t.Helper() if len(diags) != 0 { t.Errorf("wrong number of diagnostics %d; want %d", len(diags), want) for _, diag := range diags { t.Logf("- %s", diag) } return true } return false } func assertDiagnosticSummary(t *testing.T, diags tfdiags.Diagnostics, want string) bool { t.Helper() for _, diag := range diags { if diag.Description().Summary == want { return false } } t.Errorf("missing diagnostic summary %q", want) for _, diag := range diags { t.Logf("- %s", diag) } return true } func assertResultDeepEqual(t *testing.T, got, want interface{}) bool { t.Helper() if diff := deep.Equal(got, want); diff != nil { for _, problem := range diff { t.Errorf("%s", problem) } return true } return false }