add config test

Author: Maarten-Dekker

packages/vite-plugin-tempest/src/config.test.ts

@@ -1,6 +1,9 @@
-import { expect, test } from 'vitest'
+import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest'
 import { loadTempestConfiguration } from './config'
 import { mockTempestConfiguration } from './test-utils'
+import fs from 'node:fs'
+import path from 'node:path'
+import * as utils from './utils'
 
 test('the configuration can be loaded', async () => {
 	mockTempestConfiguration()
@@ -28,3 +31,41 @@ test('the configuration can be overriden', async () => {
 	expect(config).toHaveProperty('manifest')
 	expect(config).toHaveProperty('entrypoints')
 })
+
+describe('loading configuration from a file', () => {
+	const tempConfigPath = path.join(__dirname, 'tempest-vite.test.json');
+	const mockConfig = {
+		build_directory: 'build/from-file',
+		bridge_file_name: 'test-bridge',
+		manifest: 'test-manifest.json',
+		entrypoints: ['resources/js/test.js'],
+	};
+
+	beforeEach(() => {
+		fs.writeFileSync(tempConfigPath, JSON.stringify(mockConfig));
+	});
+
+	afterEach(() => {
+		fs.rmSync(tempConfigPath);
+		vi.restoreAllMocks();
+	});
+
+	test('it loads configuration from the specified file path', async () => {
+		const config = await loadTempestConfiguration({
+			config_file_path: tempConfigPath,
+		});
+
+		expect(config.build_directory).toBe('build/from-file');
+		expect(config.entrypoints).toEqual(['resources/js/test.js']);
+	});
+
+	test('it does not execute the php command when a file path is provided', async () => {
+		const execSpy = vi.spyOn(utils, 'exec');
+
+		await loadTempestConfiguration({
+			config_file_path: tempConfigPath,
+		});
+
+		expect(execSpy).not.toHaveBeenCalled();
+	});
+});