Add test for specifying target to build

test/test-addon.js

@@ -9,9 +9,7 @@ var nodeGyp = path.resolve(__dirname, '..', 'bin', 'node-gyp.js')
 test('build simple addon', function (t) {
   t.plan(3)
 
-  // Set the loglevel otherwise the output disappears when run via 'npm test'
-  var cmd = [nodeGyp, 'rebuild', '-C', addonPath, '--loglevel=verbose']
-  var proc = execFile(process.execPath, cmd, function (err, stdout, stderr) {
+  exec(t, ['rebuild'], [], function (err, stdout, stderr) {
     var logLines = stderr.toString().trim().split(/\r?\n/)
     var lastLine = logLines[logLines.length-1]
     t.strictEqual(err, null)
@@ -23,6 +21,39 @@ test('build simple addon', function (t) {
       t.error(error, 'load module')
     }
   })
+})
+
+test('build specific addon', function (t) {
+  t.plan(4)
+
+  var cmd = [nodeGyp, 'clean', 'configure', '-C', addonPath, '--loglevel=verbose']
+  exec(t, ['clean', 'configure'], [], function (err) {
+    t.error(err, 'clean build')
+
+    exec(t, ['build'], ['hello'], function (err, stdout, stderr) {
+      var logLines = stderr.toString().trim().split(/\r?\n/)
+      var lastLine = logLines[logLines.length-1]
+      t.strictEqual(err, null)
+      t.strictEqual(lastLine, 'gyp info ok', 'should end in ok')
+      try {
+        var binding = require('hello_world')
+        t.strictEqual(binding.hello(), 'world')
+      } catch (error) {
+        t.error(error, 'load module')
+      }
+    })
+  })
+})
+
+function exec(t, cmd, args, cb) {
+  // Set the loglevel otherwise the output disappears when run via 'npm test'
+  var toExec = [nodeGyp]
+    .concat(cmd)
+    .concat(['-C', addonPath, '--loglevel=verbose'])
+    .concat(args)
+
+  t.comment(toExec.join(' '))
+  var proc = execFile(process.execPath, toExec, cb)
   proc.stdout.setEncoding('utf-8')
   proc.stderr.setEncoding('utf-8')
-})
+}