package command import ( "encoding/json" "io/ioutil" "os" "path/filepath" "testing" "github.com/google/go-cmp/cmp" "github.com/hashicorp/terraform/addrs" "github.com/hashicorp/terraform/configs/configschema" "github.com/hashicorp/terraform/plans" "github.com/hashicorp/terraform/providers" "github.com/hashicorp/terraform/states" "github.com/hashicorp/terraform/terraform" "github.com/mitchellh/cli" "github.com/zclconf/go-cty/cty" ) func TestShow(t *testing.T) { ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(testProvider()), Ui: ui, }, } args := []string{ "bad", "bad", } if code := c.Run(args); code != 1 { t.Fatalf("bad: \n%s", ui.OutputWriter.String()) } } func TestShow_noArgs(t *testing.T) { // Create the default state statePath := testStateFile(t, testState()) defer testChdir(t, filepath.Dir(statePath))() ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(testProvider()), Ui: ui, }, } args := []string{} if code := c.Run(args); code != 0 { t.Fatalf("bad: \n%s", ui.OutputWriter.String()) } } func TestShow_noArgsNoState(t *testing.T) { // Create the default state statePath := testStateFile(t, testState()) defer testChdir(t, filepath.Dir(statePath))() ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(testProvider()), Ui: ui, }, } args := []string{} if code := c.Run(args); code != 0 { t.Fatalf("bad: \n%s", ui.OutputWriter.String()) } } func TestShow_plan(t *testing.T) { planPath := testPlanFileNoop(t) ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(testProvider()), Ui: ui, }, } args := []string{ planPath, } if code := c.Run(args); code != 0 { t.Fatalf("bad: \n%s", ui.ErrorWriter.String()) } } func TestShow_plan_json(t *testing.T) { planPath := showFixturePlanFile(t) ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(showFixtureProvider()), Ui: ui, }, } args := []string{ "-json", planPath, } if code := c.Run(args); code != 0 { t.Fatalf("bad: \n%s", ui.ErrorWriter.String()) } } func TestShow_state(t *testing.T) { originalState := testState() statePath := testStateFile(t, originalState) ui := new(cli.MockUi) c := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(testProvider()), Ui: ui, }, } args := []string{ statePath, } if code := c.Run(args); code != 0 { t.Fatalf("bad: \n%s", ui.ErrorWriter.String()) } } func TestShow_json_output(t *testing.T) { fixtureDir := "test-fixtures/show-json" testDirs, err := ioutil.ReadDir(fixtureDir) if err != nil { t.Fatal(err) } for _, entry := range testDirs { if !entry.IsDir() { continue } t.Run(entry.Name(), func(t *testing.T) { inputDir := filepath.Join(fixtureDir, entry.Name()) cwd, err := os.Getwd() if err != nil { t.Fatalf("err: %s", err) } if err := os.Chdir(inputDir); err != nil { t.Fatalf("err: %s", err) } defer os.Chdir(cwd) p := showFixtureProvider() ui := new(cli.MockUi) pc := &PlanCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(p), Ui: ui, }, } args := []string{ "-out=terraform.plan", } if code := pc.Run(args); code != 0 { t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String()) } // flush the plan output from the mock ui ui.OutputWriter.Reset() sc := &ShowCommand{ Meta: Meta{ testingOverrides: metaOverridesForProvider(p), Ui: ui, }, } args = []string{ "-json", "terraform.plan", } defer os.Remove("terraform.plan") if code := sc.Run(args); code != 0 { t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String()) } // compare ui output to wanted output var got, want plan gotString := ui.OutputWriter.String() json.Unmarshal([]byte(gotString), &got) wantFile, err := os.Open("output.json") if err != nil { t.Fatalf("err: %s", err) } defer wantFile.Close() byteValue, err := ioutil.ReadAll(wantFile) if err != nil { t.Fatalf("err: %s", err) } json.Unmarshal([]byte(byteValue), &want) if !cmp.Equal(got, want) { t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want)) } }) } } // showFixtureSchema returns a schema suitable for processing the configuration // in test-fixtures/show. This schema should be assigned to a mock provider // named "test". func showFixtureSchema() *terraform.ProviderSchema { return &terraform.ProviderSchema{ ResourceTypes: map[string]*configschema.Block{ "test_instance": { Attributes: map[string]*configschema.Attribute{ "id": {Type: cty.String, Optional: true, Computed: true}, "ami": {Type: cty.String, Optional: true}, }, }, }, } } // showFixtureProvider returns a mock provider that is configured for basic // operation with the configuration in test-fixtures/show. This mock has // GetSchemaReturn, PlanResourceChangeFn, and ApplyResourceChangeFn populated, // with the plan/apply steps just passing through the data determined by // Terraform Core. func showFixtureProvider() *terraform.MockProvider { p := testProvider() p.GetSchemaReturn = showFixtureSchema() p.PlanResourceChangeFn = func(req providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse { return providers.PlanResourceChangeResponse{ PlannedState: req.ProposedNewState, } } p.ApplyResourceChangeFn = func(req providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse { return providers.ApplyResourceChangeResponse{ NewState: cty.UnknownAsNull(req.PlannedState), } } return p } // showFixturePlanFile creates a plan file at a temporary location containing a // single change to create the test_instance.foo that is included in the "show" // test fixture, returning the location of that plan file. func showFixturePlanFile(t *testing.T) string { _, snap := testModuleWithSnapshot(t, "show") plannedVal := cty.ObjectVal(map[string]cty.Value{ "id": cty.UnknownVal(cty.String), "ami": cty.StringVal("bar"), }) priorValRaw, err := plans.NewDynamicValue(cty.NullVal(plannedVal.Type()), plannedVal.Type()) if err != nil { t.Fatal(err) } plannedValRaw, err := plans.NewDynamicValue(plannedVal, plannedVal.Type()) if err != nil { t.Fatal(err) } plan := testPlan(t) plan.Changes.SyncWrapper().AppendResourceInstanceChange(&plans.ResourceInstanceChangeSrc{ Addr: addrs.Resource{ Mode: addrs.ManagedResourceMode, Type: "test_instance", Name: "foo", }.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance), ProviderAddr: addrs.ProviderConfig{Type: "test"}.Absolute(addrs.RootModuleInstance), ChangeSrc: plans.ChangeSrc{ Action: plans.Create, Before: priorValRaw, After: plannedValRaw, }, }) return testPlanFile( t, snap, states.NewState(), plan, ) } // this simplified plan struct allows us to preserve field order when marshaling // the command output. type plan struct { FormatVersion string `json:"format_version,omitempty"` PlannedValues map[string]interface{} `json:"planned_values,omitempty"` ResourceChanges []interface{} `json:"resource_changes,omitempty"` OutputChanges map[string]interface{} `json:"output_changes,omitempty"` PriorState string `json:"prior_state,omitempty"` Config string `json:"configuration,omitempty"` }