test: add test for load config

test/load/config.test.js

@@ -0,0 +1,35 @@
+import path from 'path';
+import loadConfig from '@lib/load/config.js';
+
+describe('loadConfig', () => {
+  test('website with valid siteConfig', () => {
+    const siteDir = path.join(__dirname, '__fixtures__', 'simple-site');
+    const config = loadConfig(siteDir);
+    expect(config).toEqual({
+      baseUrl: '/',
+      organizationName: 'endiliey',
+      projectName: 'hello',
+      tagline: 'Hello World',
+      title: 'Hello'
+    });
+    expect(config).not.toEqual({});
+  });
+
+  test('website with incomplete siteConfig', () => {
+    const siteDir = path.join(__dirname, '__fixtures__', 'bad-site');
+    expect(() => {
+      loadConfig(siteDir);
+    }).toThrowErrorMatchingInlineSnapshot(
+      `"tagline, organizationName, projectName are missing in siteConfig.js"`
+    );
+  });
+
+  test('website with no siteConfig', () => {
+    const siteDir = path.join(__dirname, '__fixtures__', 'nonExisting');
+    expect(() => {
+      loadConfig(siteDir);
+    }).toThrowErrorMatchingInlineSnapshot(
+      `"title, tagline, organizationName, projectName, baseUrl are missing in siteConfig.js"`
+    );
+  });
+});