terraform/command/013_config_upgrade_test.go

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package command
import (
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"path"
"path/filepath"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
svchost "github.com/hashicorp/terraform-svchost"
"github.com/hashicorp/terraform-svchost/disco"
"github.com/hashicorp/terraform/helper/copy"
"github.com/hashicorp/terraform/internal/getproviders"
"github.com/mitchellh/cli"
)
// This map from provider type name to namespace is used by the fake registry
// when called via LookupLegacyProvider. Providers not in this map will return
// a 404 Not Found error.
var legacyProviderNamespaces = map[string]string{
"foo": "hashicorp",
"bar": "hashicorp",
"baz": "terraform-providers",
}
func verifyExpectedFiles(t *testing.T, expectedPath string) {
// Compare output and expected file trees
var outputFiles, expectedFiles []string
// Gather list of output files in the current working directory
err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
if !info.IsDir() {
outputFiles = append(outputFiles, path)
}
return nil
})
if err != nil {
t.Fatal("error listing output files:", err)
}
// Gather list of expected files
revertChdir := testChdir(t, expectedPath)
err = filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
if !info.IsDir() {
expectedFiles = append(expectedFiles, path)
}
return nil
})
if err != nil {
t.Fatal("error listing expected files:", err)
}
revertChdir()
// If the file trees don't match, give up early
if diff := cmp.Diff(expectedFiles, outputFiles); diff != "" {
t.Fatalf("expected and output file trees do not match\n%s", diff)
}
// Check that the contents of each file is correct
for _, filePath := range outputFiles {
output, err := ioutil.ReadFile(path.Join(".", filePath))
if err != nil {
t.Fatalf("failed to read output %s: %s", filePath, err)
}
expected, err := ioutil.ReadFile(path.Join(expectedPath, filePath))
if err != nil {
t.Fatalf("failed to read expected %s: %s", filePath, err)
}
if diff := cmp.Diff(expected, output); diff != "" {
t.Fatalf("expected and output file for %s do not match\n%s", filePath, diff)
}
}
}
func TestZeroThirteenUpgrade_success(t *testing.T) {
registrySource, close := testRegistrySource(t)
defer close()
testCases := map[string]string{
"implicit": "013upgrade-implicit-providers",
"explicit": "013upgrade-explicit-providers",
"provider not found": "013upgrade-provider-not-found",
"implicit not found": "013upgrade-implicit-not-found",
"file exists": "013upgrade-file-exists",
"no providers": "013upgrade-no-providers",
"submodule": "013upgrade-submodule",
"providers with source": "013upgrade-providers-with-source",
"preserves comments": "013upgrade-preserves-comments",
"multiple blocks": "013upgrade-multiple-blocks",
"multiple files": "013upgrade-multiple-files",
"existing versions.tf": "013upgrade-existing-versions-tf",
"skipped files": "013upgrade-skipped-files",
}
for name, testPath := range testCases {
t.Run(name, func(t *testing.T) {
inputPath, err := filepath.Abs(testFixturePath(path.Join(testPath, "input")))
if err != nil {
t.Fatalf("failed to find input path %s: %s", testPath, err)
}
expectedPath, err := filepath.Abs(testFixturePath(path.Join(testPath, "expected")))
if err != nil {
t.Fatalf("failed to find expected path %s: %s", testPath, err)
}
td := tempDir(t)
copy.CopyDir(inputPath, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
ProviderSource: registrySource,
Ui: ui,
},
}
if code := c.Run(nil); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
output := ui.OutputWriter.String()
if !strings.Contains(output, "Upgrade complete") {
t.Fatal("unexpected output:", output)
}
verifyExpectedFiles(t, expectedPath)
})
}
}
// Ensure that non-default upgrade paths are supported, and that the output is
// in the correct place. This test is very similar to the table tests above,
// but with a different expected output path, and with an argument passed to
// the Run call.
func TestZeroThirteenUpgrade_submodule(t *testing.T) {
registrySource, close := testRegistrySource(t)
defer close()
testPath := "013upgrade-submodule"
inputPath, err := filepath.Abs(testFixturePath(path.Join(testPath, "input")))
if err != nil {
t.Fatalf("failed to find input path %s: %s", testPath, err)
}
// The expected output for processing a submodule is different
expectedPath, err := filepath.Abs(testFixturePath(path.Join(testPath, "expected-module")))
if err != nil {
t.Fatalf("failed to find expected path %s: %s", testPath, err)
}
td := tempDir(t)
copy.CopyDir(inputPath, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
ProviderSource: registrySource,
Ui: ui,
},
}
// Here we pass a target module directory to process
if code := c.Run([]string{"module"}); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
output := ui.OutputWriter.String()
if !strings.Contains(output, "Upgrade complete") {
t.Fatal("unexpected output:", output)
}
verifyExpectedFiles(t, expectedPath)
}
// Verify that JSON and override files are skipped with a warning. Generated
// output for this config is verified in the table driven tests above.
func TestZeroThirteenUpgrade_skippedFiles(t *testing.T) {
inputPath := testFixturePath(path.Join("013upgrade-skipped-files", "input"))
td := tempDir(t)
copy.CopyDir(inputPath, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
}
if code := c.Run(nil); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
output := ui.OutputWriter.String()
if !strings.Contains(output, "Upgrade complete") {
t.Fatal("unexpected output:", output)
}
errMsg := ui.ErrorWriter.String()
if !strings.Contains(errMsg, `The JSON configuration file "variables.tf.json" was skipped`) {
t.Fatal("missing JSON skipped file warning:", errMsg)
}
if !strings.Contains(errMsg, `The override configuration file "bar_override.tf" was skipped`) {
t.Fatal("missing override skipped file warning:", errMsg)
}
}
func TestZeroThirteenUpgrade_unsupportedVersion(t *testing.T) {
inputPath := testFixturePath("013upgrade-unsupported-version")
td := tempDir(t)
copy.CopyDir(inputPath, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
}
if code := c.Run(nil); code == 0 {
t.Fatal("expected error, got:", ui.OutputWriter)
}
errMsg := ui.ErrorWriter.String()
if !strings.Contains(errMsg, `Unsupported Terraform Core version`) {
t.Fatal("missing version constraint error:", errMsg)
}
}
func TestZeroThirteenUpgrade_invalidFlags(t *testing.T) {
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
}
if code := c.Run([]string{"--whoops"}); code == 0 {
t.Fatal("expected error, got:", ui.OutputWriter)
}
errMsg := ui.ErrorWriter.String()
if !strings.Contains(errMsg, "Usage: terraform 0.13upgrade") {
t.Fatal("unexpected error:", errMsg)
}
}
func TestZeroThirteenUpgrade_tooManyArguments(t *testing.T) {
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
}
if code := c.Run([]string{".", "./modules/test"}); code == 0 {
t.Fatal("expected error, got:", ui.OutputWriter)
}
errMsg := ui.ErrorWriter.String()
if !strings.Contains(errMsg, "Error: Too many arguments") {
t.Fatal("unexpected error:", errMsg)
}
}
func TestZeroThirteenUpgrade_empty(t *testing.T) {
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
ui := new(cli.MockUi)
c := &ZeroThirteenUpgradeCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
}
if code := c.Run(nil); code == 0 {
t.Fatal("expected error, got:", ui.OutputWriter)
}
errMsg := ui.ErrorWriter.String()
if !strings.Contains(errMsg, "Not a module directory") {
t.Fatal("unexpected error:", errMsg)
}
}
// testServices starts up a local HTTP server running a fake provider registry
// service which responds only to discovery requests and legacy provider lookup
// API calls.
//
// The final return value is a function to call at the end of a test function
// to shut down the test server. After you call that function, the discovery
// object becomes useless.
func testServices(t *testing.T) (services *disco.Disco, cleanup func()) {
server := httptest.NewServer(http.HandlerFunc(fakeRegistryHandler))
services = disco.New()
services.ForceHostServices(svchost.Hostname("registry.terraform.io"), map[string]interface{}{
"providers.v1": server.URL + "/providers/v1/",
})
return services, func() {
server.Close()
}
}
// testRegistrySource is a wrapper around testServices that uses the created
// discovery object to produce a Source instance that is ready to use with the
// fake registry services.
//
// As with testServices, the final return value is a function to call at the end
// of your test in order to shut down the test server.
func testRegistrySource(t *testing.T) (source *getproviders.RegistrySource, cleanup func()) {
services, close := testServices(t)
source = getproviders.NewRegistrySource(services)
return source, close
}
func fakeRegistryHandler(resp http.ResponseWriter, req *http.Request) {
path := req.URL.EscapedPath()
if !strings.HasPrefix(path, "/providers/v1/") {
resp.WriteHeader(404)
resp.Write([]byte(`not a provider registry endpoint`))
return
}
pathParts := strings.Split(path, "/")[3:]
if len(pathParts) != 2 {
resp.WriteHeader(404)
resp.Write([]byte(`unrecognized path scheme`))
return
}
if pathParts[0] != "-" {
resp.WriteHeader(404)
resp.Write([]byte(`this registry only supports legacy namespace lookup requests`))
}
if namespace, ok := legacyProviderNamespaces[pathParts[1]]; ok {
resp.Header().Set("Content-Type", "application/json")
resp.WriteHeader(200)
resp.Write([]byte(`{"namespace":"` + namespace + `"}`))
} else {
resp.WriteHeader(404)
resp.Write([]byte(`provider not found`))
}
}