BST-18560 - Add E2E tests for checkov-tf-plan scanner module (#286)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: fproulx-boostsecurity

scanners/boostsecurityio/checkov-tf-plan/module.yaml

@@ -24,4 +24,4 @@ steps:
           command: process
           workdir: /src
           environment:
-            BOOST_TF_TAGS_POLICY: $BOOST_TF_TAGS_POLICY
+            BOOST_TF_TAGS_POLICY: ${BOOST_TF_TAGS_POLICY:-{}}

scanners/boostsecurityio/checkov-tf-plan/tests.yaml

@@ -0,0 +1,25 @@
+version: "1.0"
+tests:
+  - name: "aws-security-violations"
+    type: "source-code"
+    source:
+      url: "https://github.com/boost-sandbox/checkov-tf-plan-testing.git"
+      ref: "main"
+    scan_paths:
+      - "aws-security-violations"
+
+  - name: "aws-compliant"
+    type: "source-code"
+    source:
+      url: "https://github.com/boost-sandbox/checkov-tf-plan-testing.git"
+      ref: "main"
+    scan_paths:
+      - "aws-compliant"
+
+  - name: "gcp-storage"
+    type: "source-code"
+    source:
+      url: "https://github.com/boost-sandbox/checkov-tf-plan-testing.git"
+      ref: "main"
+    scan_paths:
+      - "gcp-storage"