add: resetting and seeding database for individual tests

e2e/cypress.config.js

@@ -1,13 +1,45 @@
+const util = require("node:util");
+const cp = require("node:child_process");
 const { defineConfig } = require("cypress");
+const { Pool } = require("pg");
+
+const exec = util.promisify(cp.exec);
+const { env } = process;
+const pool = new Pool({
+	connectionString: `postgres://${env.DB_USER}:${env.DB_PASSWORD}@${env.DB_HOST}:${env.DB_PORT}/${env.DB_NAME}`,
+});
+
+async function resetDatabase() {
+	const client = await pool.connect();
+	try {
+		const res = await client.query(
+			"SELECT tablename FROM pg_tables WHERE schemaname = 'public';",
+		);
+		for (const row of res.rows) {
+			await client.query(`TRUNCATE TABLE ${row.tablename} RESTART IDENTITY CASCADE;`);
+		}
+	} finally {
+		client.release();
+	}
+	return null;
+}
+
+async function seedDatabase() {
+	await exec("cd .. && go run cmd/seed/main.go");
+	return null;
+}
 
 module.exports = defineConfig({
-  e2e: {
-    defaultCommandTimeout: 15000,
-    requestTimeout: 20000,
-    responseTimeout: 20000,
-    pageLoadTimeout: 60000,
-    setupNodeEvents(on, config) {
-      // implement node event listeners here
-    },
-  },
+	e2e: {
+		defaultCommandTimeout: 15000,
+		requestTimeout: 20000,
+		responseTimeout: 20000,
+		pageLoadTimeout: 60000,
+		setupNodeEvents(on, config) {
+			on("task", {
+				resetDatabase,
+				seedDatabase,
+			});
+		},
+	},
 });

e2e/cypress/e2e/users/register.cy.js

@@ -12,6 +12,11 @@ const login = (email, password) => {
 };
 
 describe("user auth and registration flow", () => {
+	before(() => {
+		cy.task("resetDatabase");
+		cy.task("seedDatabase");
+	});
+
 	afterEach(() => {
 		cy.visit("http://localhost:3200/logout");
 	});

e2e/package.json

@@ -1,5 +1,6 @@
 {
 	"dependencies": {
-		"cypress": "^13.15.0"
+		"cypress": "^13.15.0",
+		"pg": "^8.13.3"
 	}
 }