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pmd-documentation/JUnitSpelling.md

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+
+# JUnitSpelling
+
+*Usage:* 
+`pmd check -d <source code folder> -R category/java/errorprone.xml/JUnitSpelling -format <output format>`
+
+*Description:*
+
+            In JUnit 3, the setUp method is used to set up all data entities required in running tests.
+            The tearDown method is used to clean up all data entities required in running tests.
+            You should not misspell method name if you want your test to set up and clean up everything correctly.
+        
+
+*Example:*
+```java
+
+
+import junit.framework.*;
+
+public class Foo extends TestCase {
+    public void setup() {}    // oops, should be setUp
+    public void TearDown() {} // oops, should be tearDown
+}
+
+        
+```