525 lines
14 KiB
Go
525 lines
14 KiB
Go
package command
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/google/go-cmp/cmp"
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/configs/configschema"
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"github.com/hashicorp/terraform/helper/copy"
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"github.com/hashicorp/terraform/plans"
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"github.com/hashicorp/terraform/providers"
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"github.com/hashicorp/terraform/states"
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"github.com/hashicorp/terraform/terraform"
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"github.com/mitchellh/cli"
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"github.com/zclconf/go-cty/cty"
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)
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func TestShow(t *testing.T) {
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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args := []string{
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"bad",
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"bad",
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}
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if code := c.Run(args); code != 1 {
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t.Fatalf("bad: \n%s", ui.OutputWriter.String())
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}
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}
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func TestShow_noArgs(t *testing.T) {
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// Create the default state
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statePath := testStateFile(t, testState())
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stateDir := filepath.Dir(statePath)
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defer os.RemoveAll(stateDir)
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defer testChdir(t, stateDir)()
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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// the statefile created by testStateFile is named state.tfstate
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// so one arg is required
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args := []string{"state.tfstate"}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.OutputWriter.String())
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}
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if !strings.Contains(ui.OutputWriter.String(), "# test_instance.foo:") {
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t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
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}
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}
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// https://github.com/hashicorp/terraform/issues/21462
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func TestShow_aliasedProvider(t *testing.T) {
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// Create the default state with aliased resource
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testState := states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "test_instance",
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Name: "foo",
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}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
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&states.ResourceInstanceObjectSrc{
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// The weird whitespace here is reflective of how this would
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// get written out in a real state file, due to the indentation
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// of all of the containing wrapping objects and arrays.
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AttrsJSON: []byte("{\n \"id\": \"bar\"\n }"),
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Status: states.ObjectReady,
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Dependencies: []addrs.AbsResource{},
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DependsOn: []addrs.Referenceable{},
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},
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addrs.RootModuleInstance.ProviderConfigAliased("test", "alias"),
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)
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})
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statePath := testStateFile(t, testState)
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stateDir := filepath.Dir(statePath)
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defer os.RemoveAll(stateDir)
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defer testChdir(t, stateDir)()
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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fmt.Println(os.Getwd())
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// the statefile created by testStateFile is named state.tfstate
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args := []string{"state.tfstate"}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad exit code: \n%s", ui.OutputWriter.String())
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}
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if strings.Contains(ui.OutputWriter.String(), "# missing schema for provider \"test.alias\"") {
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t.Fatalf("bad output: \n%s", ui.OutputWriter.String())
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}
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}
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func TestShow_noArgsNoState(t *testing.T) {
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// Create the default state
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statePath := testStateFile(t, testState())
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stateDir := filepath.Dir(statePath)
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defer os.RemoveAll(stateDir)
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defer testChdir(t, stateDir)()
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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// the statefile created by testStateFile is named state.tfstate
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args := []string{"state.tfstate"}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.OutputWriter.String())
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}
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}
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func TestShow_plan(t *testing.T) {
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planPath := testPlanFileNoop(t)
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ui := cli.NewMockUi()
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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args := []string{
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planPath,
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}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
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}
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want := `Terraform will perform the following actions`
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got := ui.OutputWriter.String()
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if !strings.Contains(got, want) {
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t.Errorf("missing expected output\nwant: %s\ngot:\n%s", want, got)
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}
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}
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func TestShow_planWithChanges(t *testing.T) {
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planPathWithChanges := showFixturePlanFile(t, plans.DeleteThenCreate)
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ui := cli.NewMockUi()
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(showFixtureProvider()),
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Ui: ui,
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},
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}
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args := []string{
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planPathWithChanges,
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}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
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}
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want := `test_instance.foo must be replaced`
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got := ui.OutputWriter.String()
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if !strings.Contains(got, want) {
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t.Errorf("missing expected output\nwant: %s\ngot:\n%s", want, got)
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}
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}
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func TestShow_plan_json(t *testing.T) {
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planPath := showFixturePlanFile(t, plans.Create)
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(showFixtureProvider()),
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Ui: ui,
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},
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}
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args := []string{
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"-json",
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planPath,
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}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
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}
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}
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func TestShow_state(t *testing.T) {
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originalState := testState()
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statePath := testStateFile(t, originalState)
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defer os.RemoveAll(filepath.Dir(statePath))
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ui := new(cli.MockUi)
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c := &ShowCommand{
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Meta: Meta{
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testingOverrides: metaOverridesForProvider(testProvider()),
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Ui: ui,
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},
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}
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args := []string{
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statePath,
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}
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if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
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}
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}
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func TestShow_json_output(t *testing.T) {
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fixtureDir := "testdata/show-json"
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testDirs, err := ioutil.ReadDir(fixtureDir)
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if err != nil {
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t.Fatal(err)
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}
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for _, entry := range testDirs {
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if !entry.IsDir() {
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continue
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}
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t.Run(entry.Name(), func(t *testing.T) {
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td := tempDir(t)
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inputDir := filepath.Join(fixtureDir, entry.Name())
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copy.CopyDir(inputDir, td)
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defer os.RemoveAll(td)
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defer testChdir(t, td)()
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expectError := strings.Contains(entry.Name(), "error")
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p := showFixtureProvider()
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ui := new(cli.MockUi)
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m := Meta{
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testingOverrides: metaOverridesForProvider(p),
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Ui: ui,
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}
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// init
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ic := &InitCommand{
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Meta: m,
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providerInstaller: &mockProviderInstaller{
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Providers: map[string][]string{
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"test": []string{"1.2.3"},
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},
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Dir: m.pluginDir(),
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},
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}
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if code := ic.Run([]string{}); code != 0 {
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if expectError {
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// this should error, but not panic.
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return
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}
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t.Fatalf("init failed\n%s", ui.ErrorWriter)
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}
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pc := &PlanCommand{
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Meta: m,
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}
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args := []string{
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"-out=terraform.plan",
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}
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if code := pc.Run(args); code != 0 {
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t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
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}
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// flush the plan output from the mock ui
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ui.OutputWriter.Reset()
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sc := &ShowCommand{
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Meta: m,
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}
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args = []string{
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"-json",
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"terraform.plan",
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}
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defer os.Remove("terraform.plan")
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if code := sc.Run(args); code != 0 {
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t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
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}
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// compare ui output to wanted output
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var got, want plan
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gotString := ui.OutputWriter.String()
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json.Unmarshal([]byte(gotString), &got)
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wantFile, err := os.Open("output.json")
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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defer wantFile.Close()
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byteValue, err := ioutil.ReadAll(wantFile)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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json.Unmarshal([]byte(byteValue), &want)
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if !cmp.Equal(got, want) {
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t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want))
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}
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})
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}
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}
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// similar test as above, without the plan
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func TestShow_json_output_state(t *testing.T) {
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fixtureDir := "testdata/show-json-state"
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testDirs, err := ioutil.ReadDir(fixtureDir)
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if err != nil {
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t.Fatal(err)
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}
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for _, entry := range testDirs {
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if !entry.IsDir() {
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continue
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}
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t.Run(entry.Name(), func(t *testing.T) {
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td := tempDir(t)
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inputDir := filepath.Join(fixtureDir, entry.Name())
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copy.CopyDir(inputDir, td)
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defer os.RemoveAll(td)
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defer testChdir(t, td)()
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p := showFixtureProvider()
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ui := new(cli.MockUi)
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m := Meta{
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testingOverrides: metaOverridesForProvider(p),
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Ui: ui,
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}
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// init
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ic := &InitCommand{
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Meta: m,
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providerInstaller: &mockProviderInstaller{
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Providers: map[string][]string{
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"test": []string{"1.2.3"},
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},
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Dir: m.pluginDir(),
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},
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}
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if code := ic.Run([]string{}); code != 0 {
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t.Fatalf("init failed\n%s", ui.ErrorWriter)
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}
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// flush the plan output from the mock ui
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ui.OutputWriter.Reset()
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sc := &ShowCommand{
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Meta: m,
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}
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if code := sc.Run([]string{"-json"}); code != 0 {
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t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
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}
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// compare ui output to wanted output
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type state struct {
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FormatVersion string `json:"format_version,omitempty"`
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TerraformVersion string `json:"terraform_version"`
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Values map[string]interface{} `json:"values,omitempty"`
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}
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var got, want state
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gotString := ui.OutputWriter.String()
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json.Unmarshal([]byte(gotString), &got)
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wantFile, err := os.Open("output.json")
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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defer wantFile.Close()
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byteValue, err := ioutil.ReadAll(wantFile)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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json.Unmarshal([]byte(byteValue), &want)
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if !cmp.Equal(got, want) {
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t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want))
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}
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})
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}
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}
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// showFixtureSchema returns a schema suitable for processing the configuration
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// in testdata/show. This schema should be assigned to a mock provider
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// named "test".
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func showFixtureSchema() *terraform.ProviderSchema {
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return &terraform.ProviderSchema{
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ResourceTypes: map[string]*configschema.Block{
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"test_instance": {
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Attributes: map[string]*configschema.Attribute{
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"id": {Type: cty.String, Optional: true, Computed: true},
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"ami": {Type: cty.String, Optional: true},
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},
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},
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},
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}
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}
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// showFixtureProvider returns a mock provider that is configured for basic
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// operation with the configuration in testdata/show. This mock has
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// GetSchemaReturn, PlanResourceChangeFn, and ApplyResourceChangeFn populated,
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// with the plan/apply steps just passing through the data determined by
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// Terraform Core.
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func showFixtureProvider() *terraform.MockProvider {
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p := testProvider()
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p.GetSchemaReturn = showFixtureSchema()
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p.PlanResourceChangeFn = func(req providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse {
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idVal := req.ProposedNewState.GetAttr("id")
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amiVal := req.ProposedNewState.GetAttr("ami")
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if idVal.IsNull() {
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idVal = cty.UnknownVal(cty.String)
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}
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return providers.PlanResourceChangeResponse{
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PlannedState: cty.ObjectVal(map[string]cty.Value{
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"id": idVal,
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"ami": amiVal,
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}),
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}
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}
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p.ApplyResourceChangeFn = func(req providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse {
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idVal := req.PlannedState.GetAttr("id")
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amiVal := req.PlannedState.GetAttr("ami")
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if !idVal.IsKnown() {
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idVal = cty.StringVal("placeholder")
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}
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return providers.ApplyResourceChangeResponse{
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NewState: cty.ObjectVal(map[string]cty.Value{
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"id": idVal,
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"ami": amiVal,
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}),
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}
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}
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return p
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}
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// showFixturePlanFile creates a plan file at a temporary location containing a
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// single change to create or update the test_instance.foo that is included in the "show"
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// test fixture, returning the location of that plan file.
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// `action` is the planned change you would like to elicit
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func showFixturePlanFile(t *testing.T, action plans.Action) string {
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_, snap := testModuleWithSnapshot(t, "show")
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plannedVal := cty.ObjectVal(map[string]cty.Value{
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"id": cty.UnknownVal(cty.String),
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"ami": cty.StringVal("bar"),
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})
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priorValRaw, err := plans.NewDynamicValue(cty.NullVal(plannedVal.Type()), plannedVal.Type())
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if err != nil {
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t.Fatal(err)
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}
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plannedValRaw, err := plans.NewDynamicValue(plannedVal, plannedVal.Type())
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if err != nil {
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t.Fatal(err)
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}
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plan := testPlan(t)
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plan.Changes.SyncWrapper().AppendResourceInstanceChange(&plans.ResourceInstanceChangeSrc{
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Addr: addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "test_instance",
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Name: "foo",
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}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
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ProviderAddr: addrs.LocalProviderConfig{LocalName: "test"}.Absolute(addrs.RootModuleInstance),
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ChangeSrc: plans.ChangeSrc{
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Action: action,
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Before: priorValRaw,
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After: plannedValRaw,
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},
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})
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return testPlanFile(
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t,
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snap,
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states.NewState(),
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plan,
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)
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}
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// this simplified plan struct allows us to preserve field order when marshaling
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// the command output. NOTE: we are leaving "terraform_version" out of this test
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// to avoid needing to constantly update the expected output; as a potential
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// TODO we could write a jsonplan compare function.
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type plan struct {
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FormatVersion string `json:"format_version,omitempty"`
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Variables map[string]interface{} `json:"variables,omitempty"`
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PlannedValues map[string]interface{} `json:"planned_values,omitempty"`
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ResourceChanges []interface{} `json:"resource_changes,omitempty"`
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OutputChanges map[string]interface{} `json:"output_changes,omitempty"`
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PriorState priorState `json:"prior_state,omitempty"`
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Config map[string]interface{} `json:"configuration,omitempty"`
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}
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type priorState struct {
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FormatVersion string `json:"format_version,omitempty"`
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Values map[string]interface{} `json:"values,omitempty"`
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}
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