feat: pass options to execa, close #27

README.md

@@ -1,6 +1,6 @@
 # execa-wrap
 
-> Wraps execa and makes output suitable for snapshot testing
+> Wraps [execa][execa] and makes output suitable for snapshot testing
 
 [![NPM][npm-icon] ][npm-url]
 
@@ -70,6 +70,17 @@ execaWrap('failing-command', ['its', 'arguments'])
   })
 ```
 
+You can pass other options to [execa][execa], for example environment variables
+
+```js
+const execaWrap = require('execa-wrap')
+execaWrap('failing-command', ['its', 'arguments'], {
+  env: {
+    FOO: 'foo'
+  }
+})
+```
+
 ### Filtering properties
 
 If you are not interested in every returned property, you can filter and get only some
@@ -141,3 +152,4 @@ OTHER DEALINGS IN THE SOFTWARE.
 [standard-url]: http://standardjs.com/
 [renovate-badge]: https://img.shields.io/badge/renovate-app-blue.svg
 [renovate-app]: https://renovateapp.com/
+[execa]: https://github.com/sindresorhus/execa

__snapshots__/execa-wrap-spec.js

@@ -60,3 +60,23 @@ exports['single field filter 1'] = `
   -------
 
 `
+
+exports['passed FOO environment variable 1'] = `
+
+  command: node -e console.log(process.env.FOO)
+  code: 0
+  failed: false
+  killed: false
+  signal: null
+  timedOut: false
+
+  stdout:
+  -------
+  foo
+  -------
+  stderr:
+  -------
+  
+  -------
+  
+`

src/execa-wrap-spec.js

@@ -27,10 +27,18 @@ if (os.platform() !== 'win32') {
         snapshot.bind(null, 'single field filter')
       )
     })
+
     it('can filter several fields', () => {
       return execaWrap('ls', ['src'], { filter: ['cmd', 'stdout'] }).then(
         snapshot.bind(null, 'fields filter')
       )
     })
+
+    it('can pass environment variables', () =>
+      execaWrap('node', ['-e', 'console.log(process.env.FOO)'], {
+        env: {
+          FOO: 'foo'
+        }
+      }).then(snapshot.bind(null, 'passed FOO environment variable')))
   })
 }

src/index.js

@@ -84,7 +84,7 @@ const makeText = (options = {}) => execResult => {
 }
 
 function execWrapper (cmd, args, options = {}) {
-  const child = execa(cmd, args)
+  const child = execa(cmd, args, options)
   child.stdout.pipe(process.stdout)
   child.stderr.pipe(process.stderr)
   return child.then(stripFields, stripFields).then(makeText(options))