add test coverage

Author: devksingh4

package.json

@@ -17,7 +17,7 @@
     "lint": "yarn workspaces run lint",
     "prepare": "node .husky/install.mjs || true",
     "typecheck": "yarn workspaces run typecheck",
-    "test:unit": "cross-env RunEnvironment='dev' vitest run tests/unit --config tests/unit/vitest.config.ts && yarn workspace infra-core-ui run test:unit",
+    "test:unit": "cross-env RunEnvironment='dev' vitest run --coverage tests/unit --config tests/unit/vitest.config.ts && yarn workspace infra-core-ui run test:unit",
     "test:unit-ui": "yarn test:unit --ui",
     "test:unit-watch": "vitest tests/unit",
     "test:live": "vitest tests/live",
@@ -38,6 +38,7 @@
     "@typescript-eslint/eslint-plugin": "^8.0.1",
     "@typescript-eslint/parser": "^8.0.1",
     "@vitejs/plugin-react": "^4.3.1",
+    "@vitest/coverage-istanbul": "2.1.9",
     "@vitest/ui": "^2.0.5",
     "aws-sdk-client-mock": "^4.1.0",
     "concurrently": "^9.1.2",

tests/unit/common/sqsMessage.test.ts

@@ -0,0 +1,29 @@
+import { expect, test, describe } from "vitest";
+import { parseSQSPayload } from "../../../src/common/types/sqsMessage.js";
+import { ZodError } from "zod";
+
+describe("SQS Message Parsing Tests", () => {
+  test("Ping message parses correctly", () => {
+    const payload = {
+      metadata: {
+        reqId: "12345",
+        initiator: "unit-test",
+      },
+      function: "ping",
+      payload: {},
+    };
+    const response = parseSQSPayload(payload);
+    expect(response).toStrictEqual(payload);
+  });
+  test("Invalid function doesn't parse", () => {
+    const payload = {
+      metadata: {
+        reqId: "12345",
+        initiator: "unit-test",
+      },
+      function: "invalid_function",
+      payload: {},
+    };
+    expect(parseSQSPayload(payload)).toBeInstanceOf(ZodError);
+  });
+});

tests/unit/vitest.config.ts

@@ -8,6 +8,10 @@ const __dirname = path.dirname(__filename);
 export default defineConfig({
   test: {
     setupFiles: "./tests/unit/vitest.setup.ts",
+    coverage: {
+      provider: "istanbul",
+      include: ["src/api/**/*.ts", "src/common/**/*.ts"],
+    },
   },
   resolve: {
     alias: {