HADOOP-18155. Refactor tests in TestFileUtil

Author: jojochuang

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestFileUtil.java

@@ -773,42 +773,8 @@ public void testUnZip() throws Exception {
     File foo5 = new File(tmp, "foo_5");
     File foo6 = new File(tmp, "foo_6");
     // check result:
-    assertTrue(foo0.exists());
-    assertTrue(foo1.exists());
-    assertTrue(foo2.exists());
-    assertTrue(foo3.exists());
-    assertTrue(foo4.exists());
-    assertTrue(foo5.exists());
-    assertTrue(foo6.exists());
-    assertEquals(12, foo0.length());
-    // tests whether file foo_0 has executable permissions
-    assertTrue("file lacks execute permissions", foo0.canExecute());
-    assertFalse("file has write permissions", foo0.canWrite());
-    assertFalse("file has read permissions", foo0.canRead());
-    // tests whether file foo_1 has writable permissions
-    assertFalse("file has execute permissions", foo1.canExecute());
-    assertTrue("file lacks write permissions", foo1.canWrite());
-    assertFalse("file has read permissions", foo1.canRead());
-    // tests whether file foo_2 has executable and writable permissions
-    assertTrue("file lacks execute permissions", foo2.canExecute());
-    assertTrue("file lacks write permissions", foo2.canWrite());
-    assertFalse("file has read permissions", foo2.canRead());
-    // tests whether file foo_3 has readable permissions
-    assertFalse("file has execute permissions", foo3.canExecute());
-    assertFalse("file has write permissions", foo3.canWrite());
-    assertTrue("file lacks read permissions", foo3.canRead());
-    // tests whether file foo_4 has readable and executable permissions
-    assertTrue("file lacks execute permissions", foo4.canExecute());
-    assertFalse("file has write permissions", foo4.canWrite());
-    assertTrue("file lacks read permissions", foo4.canRead());
-    // tests whether file foo_5 has readable and writable permissions
-    assertFalse("file has execute permissions", foo5.canExecute());
-    assertTrue("file lacks write permissions", foo5.canWrite());
-    assertTrue("file lacks read permissions", foo5.canRead());
-    // tests whether file foo_6 has readable, writable and executable permissions
-    assertTrue("file lacks execute permissions", foo6.canExecute());
-    assertTrue("file lacks write permissions", foo6.canWrite());
-    assertTrue("file lacks read permissions", foo6.canRead());
+    Verify.exists(new File(tmp, "foo"));
+    assertEquals(12, new File(tmp, "foo").length());
 
     final File regularFile =
         Verify.createNewFile(new File(tmp, "QuickBrownFoxJumpsOverTheLazyDog"));