Add tests for Repository insertOne method to validate record insertion and constraint violations

Author: kingRayhan

__tests__/repository/insert-one.test.ts

@@ -0,0 +1,48 @@
+import {
+  setupTestTables,
+  cleanupTestData,
+  executor,
+  DomainUser,
+} from "../../test-setup";
+import { Repository } from "../../src/repository/repository";
+
+describe("Repository - insertOne", () => {
+  let repository: Repository<DomainUser>;
+
+  beforeAll(async () => {
+    await setupTestTables();
+    repository = new Repository("users", executor);
+  });
+
+  afterEach(async () => {
+    await cleanupTestData();
+  });
+
+  it("should insert a single record into the database", async () => {
+    const record = {
+      name: "John Doe",
+      email: "john@example.com",
+      age: 30,
+    };
+    const result = await repository.insertOne(record);
+
+    expect(result).toMatchObject({
+      name: "John Doe",
+      email: "john@example.com",
+      age: 30,
+    });
+
+    const insertedRecord = await executor.executeSQL(
+      "SELECT * FROM users WHERE email = $1",
+      ["john@example.com"]
+    );
+
+    expect(insertedRecord.rows[0]).toMatchObject(record);
+  });
+
+  it("should throw an error if the record violates constraints", async () => {
+    const record = { name: null, email: "invalid@example.com" }; // Assuming 'name' cannot be null
+
+    await expect(repository.insertOne(record)).rejects.toThrow();
+  });
+});