Test terragrunt local module

.github/workflows/wc-create-pr-branch.yaml

@@ -512,6 +512,21 @@ jobs:
           repositories: >-
             ["${{github.event.repository.name}}"]
 
+      - name: Test list-module-callers
+        uses: ./list-module-callers
+        id: list-module-callers
+        with:
+          module_files: js/test/list-module-callers/terragrunt/module_files.txt
+          config_files: js/test/list-module-callers/terragrunt/config_files.txt
+
+      - name: Test actions' outputs
+        uses: ./js
+        with:
+          action: test-action
+        env:
+          TFACTION_TEST_ACTION_TERRAGRUNT: "true"
+          LIST_MODULE_CALLERS: ${{ toJSON(steps.list-module-callers.outputs) }}
+
       - name: Test setup
         uses: ./setup
         with:

js/src/index.ts

@@ -1,10 +1,13 @@
 import * as core from "@actions/core";
 import { main } from "./run";
 import * as testAction from "./test-action";
+import * as testActionTerragrunt from "./test-action-terragrunt";
 
 try {
   if (process.env.TFACTION_TEST_ACTION) {
     testAction.main();
+  } else if (process.env.TFACTION_TEST_ACTION_TERRAGRUNT) {
+    testActionTerragrunt.main();
   } else {
     main({
       action: core.getInput("action"),

js/src/list-module-callers/index.ts

@@ -39,6 +39,21 @@ export const main = async () => {
         }
       },
     );
+
+    if (fs.existsSync(tfDir + "/terragrunt.hcl")) {
+      child_process.execSync(
+        `terragrunt render-json --terragrunt-working-dir ${tfDir}`,
+      );
+      const tgInspection = JSON.parse(
+        fs.readFileSync(tfDir + "/terragrunt_rendered.json", "utf8"),
+      );
+      const source = tgInspection.terraform?.source;
+      if (source.startsWith("./") || source.startsWith("../")) {
+        rawModuleCalls[tfDir].push(source.replace("//", "/"));
+      } else {
+        return;
+      }
+    }
   });
 
   const moduleCallers = buildModuleToCallers(

js/src/test-action-terragrunt/index.ts

@@ -0,0 +1,38 @@
+import * as lib from "../lib";
+import * as core from "@actions/core";
+import * as fs from "fs";
+import { diffString } from "json-diff";
+
+type TestData = {
+  name: string;
+  expected: {
+    file: string;
+  };
+  actual: string;
+};
+
+export const main = async () => {
+  // Compare outputs
+  const testdata: TestData[] = [
+    {
+      name: "list-module-callers",
+      expected: {
+        file: '{"setup/test/terragrunt/module":["setup/test/terragrunt/foo"]}',
+      },
+      actual: process.env.LIST_MODULE_CALLERS || "",
+    },
+  ];
+  let failed = false;
+  testdata.forEach((data) => {
+    let a = JSON.parse(data.actual || "{}");
+    const b = diffString(data.expected, a);
+    if (b !== "") {
+      console.log(`Test failed: ${data.name}`);
+      console.log(b);
+      failed = true;
+    }
+  });
+  if (failed) {
+    throw new Error("Test failed");
+  }
+};

js/test/list-module-callers/terragrunt/config_files.txt

@@ -0,0 +1 @@
+setup/test/terragrunt/foo/tfaction.yaml

js/test/list-module-callers/terragrunt/module_files.txt

@@ -0,0 +1 @@
+setup/test/terragrunt/module/tfaction_module.yaml

setup/test/terragrunt/foo/terragrunt.hcl

@@ -1,3 +1,3 @@
 terraform {
-  source = "module"
+  source = "../module"
 }

setup/test/terragrunt/module/tfaction_module.yaml

@@ -0,0 +1 @@
+{}