diff --git a/bin/test.js b/bin/test.js
index 42e1a473..2cdd1b3b 100644
--- a/bin/test.js
+++ b/bin/test.js
@@ -10,7 +10,7 @@ const path = require('path');
 const env = { ...process.env };
 env.NODE_PATH = path.resolve(__dirname, '../out');
 
-const args = [
+let testFiles = [
   './out/*test.js',
   './out/**/*test.js',
   './out/*integration.js',
@@ -18,8 +18,18 @@ const args = [
   './lib/**/*test.js'
 ];
 
-cp.spawnSync(path.resolve(__dirname, '../node_modules/.bin/mocha'), args, {
-  cwd: path.resolve(__dirname, '..'),
-  env,
-  stdio: 'inherit'
-});
+// ability to inject particular test files via
+// yarn test [testFileA testFileB ...]
+if (process.argv.length > 2) {
+  testFiles = process.argv.slice(2);
+}
+
+cp.spawnSync(
+  path.resolve(__dirname, '../node_modules/.bin/mocha'),
+  testFiles,
+  {
+    cwd: path.resolve(__dirname, '..'),
+    env,
+    stdio: 'inherit'
+  }
+);