feat(terraform): add support for terraform_version in tfe_workspace blocks

lib/modules/manager/terraform/__fixtures__/tfeWorkspace.tf

@@ -0,0 +1,11 @@
+resource "tfe_workspace" "test_workspace" {
+  name         = "test-workspace"
+  organization = "renovate-fixtures"
+
+  terraform_version = "1.1.6"
+}
+
+resource "tfe_workspace" "test_workspace" {
+  name         = "test-workspace"
+  organization = "renovate-fixtures"
+}

lib/modules/manager/terraform/__snapshots__/extract.spec.ts.snap

@@ -447,6 +447,23 @@ Object {
 }
 `;
 
+exports[`modules/manager/terraform/extract extractPackageFile() extracts terraform_version for tfe_workspace and ignores missing terraform_version keys 1`] = `
+Object {
+  "deps": Array [
+    Object {
+      "currentValue": "1.1.6",
+      "datasource": "github-tags",
+      "depName": "hashicorp/terraform",
+      "depType": "tfe_workspace",
+      "extractVersion": "v(?<version>.*)$",
+    },
+    Object {
+      "skipReason": "no-version",
+    },
+  ],
+}
+`;
+
 exports[`modules/manager/terraform/extract extractPackageFile() test terraform block with only requirement_terraform_version 1`] = `
 Object {
   "deps": Array [

lib/modules/manager/terraform/common.ts

@@ -30,4 +30,8 @@ export enum TerraformResourceTypes {
    * https://www.terraform.io/docs/providers/helm/r/release.html
    */
   helm_release = 'helm_release',
+  /**
+   * https://registry.terraform.io/providers/hashicorp/tfe/latest/docs/resources/workspace
+   */
+  tfe_workspace = 'tfe_workspace',
 }

lib/modules/manager/terraform/extract.spec.ts

@@ -17,6 +17,7 @@ const helm = loadFixture('helm.tf');
 const lockedVersion = loadFixture('lockedVersion.tf');
 const lockedVersionLockfile = loadFixture('rangeStrategy.hcl');
 const terraformBlock = loadFixture('terraformBlock.tf');
+const tfeWorkspaceBlock = loadFixture('tfeWorkspace.tf');
 
 const adminConfig: RepoGlobalConfig = {
   // `join` fixes Windows CI
@@ -99,5 +100,16 @@ describe('modules/manager/terraform/extract', () => {
       expect(res.deps.filter((dep) => dep.skipReason)).toHaveLength(0);
       expect(res).toMatchSnapshot();
     });
+
+    it('extracts terraform_version for tfe_workspace and ignores missing terraform_version keys', async () => {
+      const res = await extractPackageFile(
+        tfeWorkspaceBlock,
+        'tfeWorkspace.tf',
+        {}
+      );
+      expect(res).toMatchSnapshot();
+      expect(res.deps).toHaveLength(2);
+      expect(res.deps.filter((dep) => dep.skipReason)).toHaveLength(1);
+    });
   });
 });

lib/modules/manager/terraform/extract.ts

@@ -37,6 +37,7 @@ const contentCheckList = [
   ' "helm_release" ',
   ' "docker_image" ',
   'required_version',
+  'terraform_version', // part of  tfe_workspace
 ];
 
 export async function extractPackageFile(

lib/modules/manager/terraform/readme.md

@@ -13,6 +13,7 @@ Currently, Terraform supports renovating the following dependencies, where sub p
   - chart repository ( Public and Private )
 - docker\_\*
   - Docker registry ( Public and Private )
+- [tfe_workspace](https://registry.terraform.io/providers/hashicorp/tfe/latest/docs/resources/workspace) ( `terraform_version` argument )
 
 Terraform range constraints are supported:
 
@@ -24,15 +25,16 @@ Terraform range constraints are supported:
 
 For fine-grained control, e.g. to turn off only parts of this manager, you can use the following `depTypes`:
 
-| resource                    |       depType       |
-| --------------------------- | :-----------------: |
-| Terraform provider          |     `provider`      |
-| required Terraform provider | `required_provider` |
-| required Terraform version  | `required_version`  |
-| Terraform module            |      `module`       |
-| Helm release                |   `helm_release`    |
-| Docker container            | `docker_container`  |
-| Docker image                |   `docker_image`    |
-| Docker service              |  `docker_service`   |
+| resource                    |       depType       |                                   Notes                                    |
+| --------------------------- | :-----------------: | :------------------------------------------------------------------------: |
+| Terraform provider          |     `provider`      |                                                                            |
+| required Terraform provider | `required_provider` |                                                                            |
+| required Terraform version  | `required_version`  |          This handles the `required_version` in terraform blocks           |
+| TFE workspace               |   `tfe_workspace`   | This handles the `terraform_version` argument in `tfe_workspace` resources |
+| Terraform module            |      `module`       |                                                                            |
+| Helm release                |   `helm_release`    |                                                                            |
+| Docker container            | `docker_container`  |                                                                            |
+| Docker image                |   `docker_image`    |                                                                            |
+| Docker service              |  `docker_service`   |                                                                            |
 
 If you need to change the versioning format, read the [versioning](https://docs.renovatebot.com/modules/versioning/) documentation to learn more.

lib/modules/manager/terraform/resources.ts

@@ -2,6 +2,7 @@ import { HelmDatasource } from '../../datasource/helm';
 import { getDep } from '../dockerfile/extract';
 import type { PackageDependency } from '../types';
 import { TerraformDependencyTypes, TerraformResourceTypes } from './common';
+import { analyseTerraformVersion } from './required-version';
 import type { ExtractionResult, ResourceManagerData } from './types';
 import {
   checkIfStringIsPath,
@@ -32,10 +33,15 @@ export function extractTerraformResource(
 
   const typeMatch = resourceTypeExtractionRegex.exec(line);
 
+  // Sets the resourceType, e.g. "helm_release" 'resource "helm_release" "test_release"'
   dep.managerData.resourceType =
     TerraformResourceTypes[typeMatch?.groups?.type] ??
     TerraformResourceTypes.unknown;
 
+  /**
+   * Iterates over all lines of the resource to extract the relevant key value pairs,
+   * e.g. the chart name for helm charts or the terraform_version for tfe_workspace
+   */
   do {
     lineNumber += 1;
     line = lines[lineNumber];
@@ -49,6 +55,7 @@ export function extractTerraformResource(
           dep.managerData[kvMatch.groups.key] = kvMatch.groups.value;
           break;
         case 'version':
+        case 'terraform_version':
           dep.currentValue = kvMatch.groups.value;
           break;
         default:
@@ -104,6 +111,15 @@ export function analyseTerraformResource(
       dep.datasource = HelmDatasource.id;
       break;
 
+    case TerraformResourceTypes.tfe_workspace:
+      if (dep.currentValue) {
+        analyseTerraformVersion(dep);
+        dep.depType = 'tfe_workspace';
+      } else {
+        dep.skipReason = 'no-version';
+      }
+      break;
+
     default:
       dep.skipReason = 'invalid-value';
       break;