Port tests

github · mbg · Mar 5, 2026 · Mar 1, 2026 · Mar 1, 2026 · Mar 1, 2026
commit 8eb0202e9d4ba01c2d56e0ce47f216da4a368502
@@ -0,0 +1,250 @@
+#!/usr/bin/env npx tsx
+
+/*
+Tests for the sync_back.ts script
+*/
+
+import * as assert from "node:assert/strict";
+import * as fs from "node:fs";
+import * as os from "node:os";
+import * as path from "node:path";
+import { afterEach, beforeEach, describe, it } from "node:test";
+
+import {
+  scanGeneratedWorkflows,
+  updateSyncTs,
+  updateTemplateFiles,
+} from "./sync_back";
+
+let testDir: string;
+let workflowDir: string;
+let checksDir: string;
+let syncTsPath: string;
+
+beforeEach(() => {
+  /** Set up temporary directories and files for testing */
+  testDir = fs.mkdtempSync(path.join(os.tmpdir(), "sync-back-test-"));
+  workflowDir = path.join(testDir, ".github", "workflows");
+  checksDir = path.join(testDir, "pr-checks", "checks");
+  fs.mkdirSync(workflowDir, { recursive: true });
+  fs.mkdirSync(checksDir, { recursive: true });
+
+  // Create sync.ts file path
+  syncTsPath = path.join(testDir, "pr-checks", "sync.ts");
+});
+
+afterEach(() => {
+  /** Clean up temporary directories */
+  fs.rmSync(testDir, { recursive: true, force: true });
+});
+
+describe("scanGeneratedWorkflows", () => {
+  it("basic workflow scanning", () => {
+    /** Test basic workflow scanning functionality */
+    const workflowContent = `
+name: Test Workflow
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v5
+      - uses: actions/setup-go@v6
+`;
+
+    fs.writeFileSync(path.join(workflowDir, "__test.yml"), workflowContent);
+
+    const result = scanGeneratedWorkflows(workflowDir);
+
+    assert.equal(result["actions/checkout"], "v4");
+    assert.equal(result["actions/setup-node"], "v5");
+    assert.equal(result["actions/setup-go"], "v6");
+  });
+
+  it("scanning workflows with version comments", () => {
+    /** Test scanning workflows with version comments */
+    const workflowContent = `
+name: Test Workflow
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby@44511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0
+      - uses: actions/setup-python@v6 # Latest Python
+`;
+
+    fs.writeFileSync(path.join(workflowDir, "__test.yml"), workflowContent);
+
+    const result = scanGeneratedWorkflows(workflowDir);
+
+    assert.equal(result["actions/checkout"], "v4");
+    assert.equal(
+      result["ruby/setup-ruby"],
+      "44511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0",
+    );
+    assert.equal(result["actions/setup-python"], "v6 # Latest Python");
+  });
+
+  it("ignores local actions", () => {
+    /** Test that local actions (starting with ./) are ignored */
+    const workflowContent = `
+name: Test Workflow
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/actions/local-action
+      - uses: ./another-local-action@v1
+`;
+
+    fs.writeFileSync(path.join(workflowDir, "__test.yml"), workflowContent);
+
+    const result = scanGeneratedWorkflows(workflowDir);
+
+    assert.equal(result["actions/checkout"], "v4");
+    assert.equal("./.github/actions/local-action" in result, false);
+    assert.equal("./another-local-action" in result, false);
+  });
+});
+
+describe("updateSyncTs", () => {
+  it("updates sync.ts file", () => {
+    /** Test updating sync.ts file */
+    const syncTsContent = `
+const steps = [
+  {
+    uses: "actions/setup-node@v4",
+    with: { "node-version": "16" },
+  },
+  {
+    uses: "actions/setup-go@v5",
+    with: { "go-version": "1.19" },
+  },
+];
+`;
+
+    fs.writeFileSync(syncTsPath, syncTsContent);
+
+    const actionVersions = {
+      "actions/setup-node": "v5",
+      "actions/setup-go": "v6",
+    };
+
+    const result = updateSyncTs(syncTsPath, actionVersions);
+    assert.equal(result, true);
+
+    const updatedContent = fs.readFileSync(syncTsPath, "utf8");
+
+    assert.ok(updatedContent.includes('uses: "actions/setup-node@v5"'));
+    assert.ok(updatedContent.includes('uses: "actions/setup-go@v6"'));
+  });
+
+  it("strips comments from versions", () => {
+    /** Test updating sync.ts file when versions have comments */
+    const syncTsContent = `
+const steps = [
+  {
+    uses: "actions/setup-node@v4",
+    with: { "node-version": "16" },
+  },
+];
+`;
+
+    fs.writeFileSync(syncTsPath, syncTsContent);
+
+    const actionVersions = {
+      "actions/setup-node": "v5 # Latest version",
+    };
+
+    const result = updateSyncTs(syncTsPath, actionVersions);
+    assert.equal(result, true);
+
+    const updatedContent = fs.readFileSync(syncTsPath, "utf8");
+
+    // sync.ts should get the version without comment
+    assert.ok(updatedContent.includes('uses: "actions/setup-node@v5"'));
+    assert.ok(!updatedContent.includes("# Latest version"));
+  });
+
+  it("returns false when no changes are needed", () => {
+    /** Test that updateSyncTs returns false when no changes are needed */
+    const syncTsContent = `
+const steps = [
+  {
+    uses: "actions/setup-node@v5",
+    with: { "node-version": "16" },
+  },
+];
+`;
+
+    fs.writeFileSync(syncTsPath, syncTsContent);
+
+    const actionVersions = {
+      "actions/setup-node": "v5",
+    };
+
+    const result = updateSyncTs(syncTsPath, actionVersions);
+    assert.equal(result, false);
+  });
+});
+
+describe("updateTemplateFiles", () => {
+  it("updates template files", () => {
+    /** Test updating template files */
+    const templateContent = `
+name: Test Template
+steps:
+  - uses: actions/checkout@v3
+  - uses: actions/setup-node@v4
+    with:
+      node-version: 16
+`;
+
+    const templatePath = path.join(checksDir, "test.yml");
+    fs.writeFileSync(templatePath, templateContent);
+
+    const actionVersions = {
+      "actions/checkout": "v4",
+      "actions/setup-node": "v5 # Latest",
+    };
+
+    const result = updateTemplateFiles(checksDir, actionVersions);
+    assert.equal(result.length, 1);
+    assert.ok(result.includes(templatePath));
+
+    const updatedContent = fs.readFileSync(templatePath, "utf8");
+
+    assert.ok(updatedContent.includes("uses: actions/checkout@v4"));
+    assert.ok(updatedContent.includes("uses: actions/setup-node@v5 # Latest"));
+  });
+
+  it("preserves version comments", () => {
+    /** Test that updating template files preserves version comments */
+    const templateContent = `
+name: Test Template
+steps:
+  - uses: ruby/setup-ruby@44511735964dcb71245e7e55f72539531f7bc0eb # v1.256.0
+`;
+
+    const templatePath = path.join(checksDir, "test.yml");
+    fs.writeFileSync(templatePath, templateContent);
+
+    const actionVersions = {
+      "ruby/setup-ruby":
+        "55511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0",
+    };
+
+    const result = updateTemplateFiles(checksDir, actionVersions);
+    assert.equal(result.length, 1);
+
+    const updatedContent = fs.readFileSync(templatePath, "utf8");
+
+    assert.ok(
+      updatedContent.includes(
+        "uses: ruby/setup-ruby@55511735964dcb71245e7e55f72539531f7bc0eb # v1.257.0",
+      ),
+    );
+  });
+});
@@ -33,7 +33,7 @@ const SYNC_TS_PATH = path.join(THIS_DIR, "sync.ts");
  * @param workflowDir - Path to .github/workflows directory
  * @returns Map from action names to their latest versions (including comments)
  */
-function scanGeneratedWorkflows(workflowDir: string): Record<string, string> {
+export function scanGeneratedWorkflows(workflowDir: string): Record<string, string> {
   const actionVersions: Record<string, string> = {};
 
   const generatedFiles = fs
@@ -71,7 +71,7 @@ function scanGeneratedWorkflows(workflowDir: string): Record<string, string> {
  * @param actionVersions - Map of action names to versions (may include comments)
  * @returns True if the file was modified, false otherwise
  */
-function updateSyncTs(
+export function updateSyncTs(
   syncTsPath: string,
   actionVersions: Record<string, string>,
 ): boolean {
@@ -120,7 +120,7 @@ function updateSyncTs(
  * @param actionVersions - Map of action names to versions (may include comments)
  * @returns List of files that were modified
  */
-function updateTemplateFiles(
+export function updateTemplateFiles(
   checksDir: string,
   actionVersions: Record<string, string>,
 ): string[] {
@@ -214,4 +214,7 @@ function main(): number {
   return 0;
 }
 
-process.exit(main());
+// Only call `main` if this script was run directly.
+if (require.main === module) {
+  process.exit(main());
+}