Extend tests to use lockfile if available

.github/actions/fabric-tests/action.yml

@@ -41,11 +41,21 @@ runs:
     - name: Configure provider cache
       shell: bash
       run: |
-        echo 'plugin_cache_dir = "/home/runner/.terraform.d/plugin-cache"' \
+        echo 'plugin_cache_dir = "${{ env.TF_PLUGIN_CACHE_DIR }}"' \
           | tee -a /home/runner/.terraformrc
         echo 'disable_checkpoint = true' \
           | tee -a /home/runner/.terraformrc
         mkdir -p ${{ env.TF_PLUGIN_CACHE_DIR }}
+    - name: Download lockfile
+      uses: actions/download-artifact@v3
+      with:
+        name: lockfile
+        path: tools/lockfile
+    - name: Download Terraform provider cache
+      uses: actions/cache@v3
+      with:
+        path: ${{ env.TF_PLUGIN_CACHE_DIR }}
+        key: ${{ runner.os }}-terraform-${{ hashFiles('tools/lockfile/.terraform.lock.hcl') }}
     # avoid conflicts with user-installed providers on local machines
     - name: Pin provider versions
       shell: bash

.github/workflows/tests.yml

@@ -29,10 +29,46 @@ env:
   PYTHON_VERSION: "3.10"
   TF_PLUGIN_CACHE_DIR: "/home/runner/.terraform.d/plugin-cache"
   TF_VERSION: 1.4.4
+  TFTEST_COPY: 1
 
 jobs:
+  setup-tf-providers:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: hashicorp/setup-terraform@v2
+        with:
+          terraform_version: ${{ env.TERRAFORM_VERSION }}
+          terraform_wrapper: false
+
+      - name: Build lockfile and fetch providers
+        shell: bash
+        run: |
+          mkdir -p ${{ env.TF_PLUGIN_CACHE_DIR }}
+          echo 'plugin_cache_dir = "${{ env.TF_PLUGIN_CACHE_DIR }}"' | tee -a /home/runner/.terraformrc
+          echo 'disable_checkpoint = true' | tee -a /home/runner/.terraformrc
+          cp default-versions.tf tools/lockfile
+          sed -i 's/>=\(.*# tftest\)/=\1/g' tools/lockfile/default-versions.tf
+          cd tools/lockfile
+          terraform init -upgrade=true
+
+      - name: Upload Terraform provider cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.TF_PLUGIN_CACHE_DIR }}
+          key: ${{ runner.os }}-terraform-${{ hashFiles('tools/lockfile/.terraform.lock.hcl') }}
+
+      - name: Upload lockfile
+        uses: actions/upload-artifact@v3
+        with:
+          name: lockfile
+          path: tools/lockfile/.terraform.lock.hcl
+
+
   examples-blueprints:
     runs-on: ubuntu-latest
+    needs: setup-tf-providers
     steps:
       - uses: actions/checkout@v3
 
@@ -43,10 +79,11 @@ jobs:
           TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
 
       - name: Run tests on documentation examples
-        run: pytest -vv -k blueprints/ tests/examples
+        run: pytest -vv -n4 -k blueprints/ tests/examples
 
   examples-modules:
     runs-on: ubuntu-latest
+    needs: setup-tf-providers
     steps:
       - uses: actions/checkout@v3
 
@@ -57,10 +94,11 @@ jobs:
           TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
 
       - name: Run tests on documentation examples
-        run: pytest -vv -k modules/ tests/examples
+        run: pytest -vv -n4 -k modules/ tests/examples
 
   blueprints:
     runs-on: ubuntu-latest
+    needs: setup-tf-providers
     steps:
       - uses: actions/checkout@v3
 
@@ -71,10 +109,11 @@ jobs:
           TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
 
       - name: Run tests environments
-        run: pytest -vv tests/blueprints
+        run: pytest -vv -n4 tests/blueprints
 
   modules:
     runs-on: ubuntu-latest
+    needs: setup-tf-providers
     steps:
       - uses: actions/checkout@v3
 
@@ -85,10 +124,11 @@ jobs:
           TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
 
       - name: Run tests modules
-        run: pytest -vv tests/modules
+        run: pytest -vv -n4 tests/modules
 
   fast:
     runs-on: ubuntu-latest
+    needs: setup-tf-providers
     steps:
       - uses: actions/checkout@v3
 
@@ -99,4 +139,4 @@ jobs:
           TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
 
       - name: Run tests on FAST stages
-        run: pytest -vv tests/fast
+        run: pytest -vv -n4 tests/fast

tests/conftest.py

@@ -1,4 +1,4 @@
-# Copyright 2022 Google LLC
+# Copyright 2023 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,6 +17,5 @@
 
 pytest_plugins = (
     'tests.fixtures',
-    'tests.legacy_fixtures',
     'tests.collectors',
 )

tests/fixtures.py

@@ -25,6 +25,7 @@
 import tftest
 import yaml
 
+_REPO_ROOT = Path(__file__).parents[1]
 PlanSummary = collections.namedtuple('PlanSummary', 'values counts outputs')
 
 
@@ -51,10 +52,14 @@ def _prepare_root_module(path):
                                                '*.auto.tfvars.json',
                                                '[0-9]-*-providers.tf',
                                                'terraform.tfstate*',
+                                               '.terraform.lock.hcl',
                                                'terraform.tfvars', '.terraform')
 
       shutil.copytree(path, tmp_path, dirs_exist_ok=True,
                       ignore=ignore_patterns)
+      lockfile = _REPO_ROOT / 'tools' / 'lockfile' / '.terraform.lock.hcl'
+      if lockfile.exists():
+        shutil.copy(lockfile, tmp_path / '.terraform.lock.hcl')
 
       yield tmp_path
   else:
@@ -94,7 +99,7 @@ def plan_summary(module_path, basedir, tf_var_files=None, extra_files=None,
   """
   # make the module_path relative to the root of the repo while still
   # supporting absolute paths
-  module_path = Path(__file__).parents[1] / module_path
+  module_path = _REPO_ROOT / module_path
   with _prepare_root_module(module_path) as test_path:
     binary = os.environ.get('TERRAFORM', 'terraform')
     tf = tftest.TerraformTest(test_path, binary=binary)

tests/modules/cloud_config_container_coredns/test_apply.py → tests/modules/cloud_config_container_coredns/test_plan.py

@@ -1,4 +1,4 @@
-# Copyright 2022 Google LLC
+# Copyright 2023 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,10 +16,10 @@
 import yaml
 
 
-def test_defaults(apply_runner):
-  "Test defalt configuration."
-  _, output = apply_runner()
-  cloud_config = output['cloud_config']
+def test_defaults(plan_summary):
+  "Test default configuration."
+  summary = plan_summary('modules/cloud-config-container/coredns/')
+  cloud_config = summary.outputs['cloud_config']['value']
   yaml.safe_load(cloud_config)
   assert cloud_config.startswith('#cloud-config')
   assert re.findall(r'(?m)^\s+\-\s*path:\s*(\S+)', cloud_config) == [