fix: update templated tf versions (#812)

Co-authored-by: Benjamin E. Coe <bencoe@google.com>

__snapshots__/terraform-module.js

@@ -250,6 +250,40 @@ terraform {
   }
 }
 
+filename: versions.tf.tmpl
+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% if test %}
+terraform {
+  required_version = ">=0.13, <0.14"
+
+  required_providers {
+    google = ">= 3.44.0, <4.0.0"
+  }
+
+  provider_meta "google" {
+    module_name = "foo/bar/baz/v12.1.1"
+  }
+
+  provider_meta "google-beta" {
+    module_name = "foo/bar/baz/v12.1.1"
+  }
+}
+{% endif %}
 `
 
 exports['terraform-module run creates a release PR for simple-module: options'] = `

src/releasers/terraform-module.ts

@@ -94,8 +94,13 @@ export class TerraformModule extends ReleasePR {
     });
 
     // Update versions.tf to current candidate version.
-    // A module may have submodules, so find all versions.tf to update.
-    const versionFiles = await this.gh.findFilesByFilename('versions.tf');
+    // A module may have submodules, so find all versions.tfand versions.tf.tmpl to update.
+    const versionFiles = await Promise.all([
+      this.gh.findFilesByFilename('versions.tf'),
+      this.gh.findFilesByFilename('versions.tf.tmpl'),
+    ]).then(([v, vt]) => {
+      return v.concat(vt);
+    });
     versionFiles.forEach(path => {
       updates.push(
         new ModuleVersion({

test/releasers/fixtures/terraform/simple-module/versions.tf.tmpl

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% if test %}
+terraform {
+  required_version = ">=0.13, <0.14"
+
+  required_providers {
+    google = ">= 3.44.0, <4.0.0"
+  }
+
+  provider_meta "google" {
+    module_name = "foo/bar/baz/v12.0.0"
+  }
+
+  provider_meta "google-beta" {
+    module_name = "foo/bar/baz/v12.0.0"
+  }
+}
+{% endif %}

test/releasers/terraform-module.ts

@@ -34,8 +34,13 @@ describe('terraform-module', () => {
       // simple-module with module versions defined
       name: 'simple-module',
       findVersionFiles: ['versions.tf'],
+      findTemplatedVersionFiles: ['versions.tf.tmpl'],
       findReadmeFiles: ['readme.md'],
-      readFilePaths: ['simple-module/readme.md', 'simple-module/versions.tf'],
+      readFilePaths: [
+        'simple-module/readme.md',
+        'simple-module/versions.tf',
+        'simple-module/versions.tf.tmpl',
+      ],
       expectedVersion: '12.1.0',
     },
     {
@@ -47,6 +52,7 @@ describe('terraform-module', () => {
         'versions.tf',
         'modules/sub-module-with-version/versions.tf',
       ],
+      findTemplatedVersionFiles: [],
       findReadmeFiles: [
         'README.md',
         'modules/sub-module-with-version/readme.md',
@@ -65,6 +71,7 @@ describe('terraform-module', () => {
       // module-no-versions with no module versions defined in versions.tf
       name: 'module-no-versions',
       findVersionFiles: [],
+      findTemplatedVersionFiles: [],
       findReadmeFiles: ['module-no-versions/README.MD'],
       readFilePaths: ['module-no-versions/README.MD'],
       expectedVersion: '2.1.0',
@@ -101,7 +108,9 @@ describe('terraform-module', () => {
           .onFirstCall()
           .returns(Promise.resolve(test.findReadmeFiles))
           .onSecondCall()
-          .returns(Promise.resolve(test.findVersionFiles));
+          .returns(Promise.resolve(test.findVersionFiles))
+          .onThirdCall()
+          .returns(Promise.resolve(test.findTemplatedVersionFiles));
 
         // Return latest tag used to determine next version #:
         sandbox.stub(releasePR, 'latestTag').returns(