fix: There is a case sensitive issue from spawn-wrap on Windows

this PR will hotfix this code

istanbuljs/spawn-wrap#57

lib/cmd/cov.js

@@ -5,6 +5,7 @@ const debug = require('debug')('egg-bin:cov');
 const path = require('path');
 const rimraf = require('mz-modules/rimraf');
 const testExclude = require('test-exclude');
+const fs = require('mz/fs');
 
 const Command = require('./test');
 const EXCLUDES = Symbol('cov#excludes');
@@ -71,10 +72,14 @@ class CovCommand extends Command {
       env: Object.assign({ NODE_ENV: 'test' }, env),
     };
 
+    yield hotfixSpawnWrap();
+
     // save coverage-xxxx.json to $PWD/coverage
     const covArgs = this.getCovArgs(context);
     debug('covArgs: %j', covArgs);
     yield this.helper.forkNode(nycCli, covArgs, opt);
+
+    yield rollbackSpawnWrap();
   }
 
   /**
@@ -119,3 +124,25 @@ class CovCommand extends Command {
 }
 
 module.exports = CovCommand;
+
+const src = 'var command = path.basename(options.file, \'.exe\')';
+const target = 'var command = path.basename(options.file).replace(/\.exe$/i, \'\')';
+
+function* hotfixSpawnWrap() {
+  yield replaceSpawnWrap(src, target);
+}
+
+function* rollbackSpawnWrap() {
+  yield replaceSpawnWrap(target, src);
+}
+
+function* replaceSpawnWrap(src, target) {
+  const filepath = path.join(__dirname, '../../node_modules/nyc/node_modules/spawn-wrap/index.js');
+  let content = yield fs.readFile(filepath, 'utf8');
+  // https://github.com/tapjs/spawn-wrap/pull/57
+  if (content.includes(src)) {
+    content = content.replace(src, target);
+    console.warn('[egg-bin] hotfix spawn-wrap');
+    yield fs.writeFile(filepath, content);
+  }
+}

test/lib/cmd/cov.test.js

@@ -28,6 +28,7 @@ describe('test/lib/cmd/cov.test.js', () => {
     }
 
     child.expect('code', 0)
+      .expect('stderr', /\[egg-bin] hotfix spawn-wrap/)
       .end(err => {
         assert.ifError(err);
         assert.ok(fs.existsSync(path.join(cwd, 'coverage/coverage-final.json')));