diff --git a/common/src/test/java/com/alibaba/datax/common/element/DoubleColumnTest.java b/common/src/test/java/com/alibaba/datax/common/element/DoubleColumnTest.java
index 1254d6d3c..362bbb783 100644
--- a/common/src/test/java/com/alibaba/datax/common/element/DoubleColumnTest.java
+++ b/common/src/test/java/com/alibaba/datax/common/element/DoubleColumnTest.java
@@ -238,7 +238,6 @@ public void test_doubleFormat() {
 		System.out.println("double: " + 9801523474.399621d);
 		System.out.println("bigdecimal: " + new BigDecimal(9801523474.399621d).toPlainString());
 		System.out.println("bigdecimal: " + new BigDecimal(String.valueOf(9801523474.399621d)).toPlainString());
-
 		System.out.println(new DoubleColumn(9801523474.399621d).asString());
 		Assert.assertTrue("9801523474.39962".equals(new DoubleColumn(
 				9801523474.399621d).asString()));
diff --git a/common/src/test/java/com/alibaba/datax/common/util/ConfigurationTest.java b/common/src/test/java/com/alibaba/datax/common/util/ConfigurationTest.java
index c0c6c2953..44d7fe911 100644
--- a/common/src/test/java/com/alibaba/datax/common/util/ConfigurationTest.java
+++ b/common/src/test/java/com/alibaba/datax/common/util/ConfigurationTest.java
@@ -668,7 +668,6 @@ public void test_get_list() {
 		expectedEx.expect(ClassCastException.class);
 		expectedEx.expectMessage("com.alibaba.fastjson.JSONObject cannot be cast to java.util.List");
 		List aStringCantConvertToList = configuration.getList("job.setting");
-
 	}
 
 }
diff --git a/core/src/test/java/com/alibaba/datax/core/EngineTest.java b/core/src/test/java/com/alibaba/datax/core/EngineTest.java
index cb3f44d3b..bd3923a84 100644
--- a/core/src/test/java/com/alibaba/datax/core/EngineTest.java
+++ b/core/src/test/java/com/alibaba/datax/core/EngineTest.java
@@ -35,8 +35,8 @@ public void test_entry() throws Throwable {
 		writer.write(jobConfig);
 		writer.flush();
 		writer.close();
-
 		String[] args = { "-job", jobFile, "-mode", "standalone" };
+
 		Engine.entry(args);
 	}