feat: support options.env to specific server env (#199)

Author: dead-horse

lib/egg.js

@@ -121,6 +121,7 @@ class EggCore extends KoaApplication {
       plugins: options.plugins,
       logger: this.console,
       serverScope: options.serverScope,
+      env: options.env,
     });
   }
 

lib/loader/egg_loader.js

@@ -103,10 +103,10 @@ class EggLoader {
    * @since 1.0.0
    */
   getServerEnv() {
-    let serverEnv;
+    let serverEnv = this.options.env;
 
     const envPath = path.join(this.options.baseDir, 'config/env');
-    if (fs.existsSync(envPath)) {
+    if (!serverEnv && fs.existsSync(envPath)) {
       serverEnv = fs.readFileSync(envPath, 'utf8').trim();
     }
 

test/loader/get_server_env.test.js

@@ -43,4 +43,15 @@ describe('test/loader/get_server_env.test.js', function() {
     app = utils.createApp('serverenv-file');
     assert(app.loader.serverEnv === 'prod');
   });
+
+  it('should get from options.env', function() {
+    app = utils.createApp('serverenv', { env: 'prod' });
+    assert(app.loader.serverEnv === 'prod');
+  });
+
+  it('should use options.env first', function() {
+    mm(process.env, 'EGG_SERVER_ENV', 'test');
+    app = utils.createApp('serverenv-file', { env: 'development' });
+    assert(app.loader.serverEnv === 'development');
+  });
 });