diff --git a/tests/MinifyClosureCompilerTest.php b/tests/MinifyClosureCompilerTest.php
index 813003d..e7f8f8a 100644
--- a/tests/MinifyClosureCompilerTest.php
+++ b/tests/MinifyClosureCompilerTest.php
@@ -39,7 +39,7 @@ class MinifyClosureCompilerTest extends TestCase
      */
     public function test2()
     {
-        $this->assertHasCompilerJar();
+        $this->assertHasJar();
         $src = "
     (function (window, undefined){
         function addOne(input) {
@@ -59,7 +59,7 @@ class MinifyClosureCompilerTest extends TestCase
      */
     public function test3()
     {
-        $this->assertHasCompilerJar();
+        $this->assertHasJar();
         $src = "function unused() {};";
         $minExpected = '';
         $minOutput = Minify_ClosureCompiler::minify($src, array(
@@ -68,7 +68,7 @@ class MinifyClosureCompilerTest extends TestCase
         $this->assertSame($minExpected, $minOutput, 'advanced optimizations');
     }
 
-    protected function assertHasCompilerJar()
+    protected function assertHasJar()
     {
         $this->assertNotEmpty(Minify_ClosureCompiler::$jarFile);
         $this->assertFileExists(Minify_ClosureCompiler::$jarFile, "Have closure compiler compiler.jar");
diff --git a/tests/MinifyYuiCSSTest.php b/tests/MinifyYuiCSSTest.php
index 7cfdb20..32002f6 100644
--- a/tests/MinifyYuiCSSTest.php
+++ b/tests/MinifyYuiCSSTest.php
@@ -6,12 +6,16 @@ class MinifyYuiCSSTest extends TestCase
     {
         parent::setupBeforeClass();
 
-        // To test this, install the .jar file and customize the constant in:
-
-        Minify_YUICompressor::$jarFile = '/usr/share/java/yuicompressor.jar';
+        // To test more functionality, download a yuicompressor.jar from
+        // https://github.com/yui/yuicompressor/releases
+        // put it under tests dir as 'yuicompressor.jar'
+        Minify_YUICompressor::$jarFile = __DIR__ . DIRECTORY_SEPARATOR . 'yuicompressor.jar';
         Minify_YUICompressor::$tempDir = sys_get_temp_dir();
     }
 
+    public function setUp() {
+        $this->assertHasJar();
+    }
 
     public function test1()
     {
@@ -40,4 +44,10 @@ class MinifyYuiCSSTest extends TestCase
         $minOutput = Minify_YUICompressor::minifyCss($src, $options);
         $this->assertEquals($minExpected, $minOutput);
     }
+
+    protected function assertHasJar()
+    {
+        $this->assertNotEmpty(Minify_YUICompressor::$jarFile );
+        $this->assertFileExists(Minify_YUICompressor::$jarFile , "Have YUI yuicompressor.jar");
+    }
 }
\ No newline at end of file