feat: add COV_EXCLUDES for coverage excludes

README.md

@@ -96,6 +96,14 @@ Using [istanbul] to run code coverage, it support all test params above.
 
 Coverage reporter will output text-summary, json and lcov.
 
+#### excludes
+
+You can set `COV_EXCLUDES` env to add dir ignore coverage.
+
+```bash
+$ COV_EXCLUDES="app/plugins/c*,app/autocreate/**" egg-bin cov
+```
+
 ## Custom egg-bin for your team
 
 You maybe need a custom egg-bin to implement more custom features

README.zh-CN.md

@@ -96,6 +96,14 @@ TEST_TIMEOUT=2000 egg-bin test
 
 支持的表报有 text-summary，json，lcov，并通过 [alicov] 上传。
 
+#### excludes
+
+可以通过设置 `COV_EXCLUDES` 环境变量忽略对指定目录的代码覆盖率测试。
+
+```bash
+$ COV_EXCLUDES="app/plugins/c*,app/autocreate/**" egg-bin cov
+```
+
 ## 定制属于你团队的 egg-bin
 
 如果你的团队已经基于 egg 开发了属于自己的框架，那么很可能你会需要在 egg-bin 上做更多自定义功能。

lib/cov_command.js

@@ -13,6 +13,12 @@ class CovCommand extends Command {
       'examples/**',
       'mocks_*/**',
     ];
+    if (process.env.COV_EXCLUDES) {
+      const excludes = process.env.COV_EXCLUDES.split(',');
+      for (const exclude of excludes) {
+        this.excludes.push(exclude);
+      }
+    }
   }
 
   * run(cwd, args) {

test/egg-cov.test.js

@@ -28,17 +28,39 @@ describe('egg-bin cov', () => {
     .end((err, res) => {
       assert.ifError(err);
       assert.ok(!/a.js/.test(res.stdout));
-      // 测试 report json
       assert.ok(fs.existsSync(path.join(appdir, 'coverage/coverage-final.json')));
-      // 测试 report lcov
       assert.ok(fs.existsSync(path.join(appdir, 'coverage/lcov-report/index.html')));
       assert.ok(fs.existsSync(path.join(appdir, 'coverage/lcov.info')));
-      // 已删除
       assert.ok(!fs.existsSync(path.join(appdir, '.tmp')));
       done();
     });
   });
 
+  it('should success with COV_EXCLUDES', done => {
+    mm(process.env, 'TESTS', 'test/**/*.test.js');
+    mm(process.env, 'COV_EXCLUDES', 'lib/*');
+    coffee.fork(eggBin, [ 'cov' ], {
+      cwd: appdir,
+    })
+    .coverage(false)
+    // .debug()
+    .expect('stdout', /\/test\/fixtures\/test-files\/\.tmp true/)
+    .expect('stdout', /✓ should success/)
+    .expect('stdout', /a\.test\.js/)
+    .expect('stdout', /b\/b\.test\.js/)
+    .expect('stdout', /Statements {3}: 100% \( 0\/0 \)/)
+    .expect('code', 0)
+    .end((err, res) => {
+      assert(!err);
+      assert(!/a.js/.test(res.stdout));
+      assert(fs.existsSync(path.join(appdir, 'coverage/coverage-final.json')));
+      assert(fs.existsSync(path.join(appdir, 'coverage/lcov-report/index.html')));
+      assert(fs.existsSync(path.join(appdir, 'coverage/lcov.info')));
+      assert(!fs.existsSync(path.join(appdir, '.tmp')));
+      done();
+    });
+  });
+
   it('should fail when test fail', done => {
     mm(process.env, 'TESTS', 'test/fail.js');
     coffee.fork(eggBin, [ 'cov' ], {