make DetailExceptionIntention more discoverable (add test)

plugins/IntentionPowerPak/test/com/siyeh/ipp/exceptions/detail/CaretAtParameter.java

@@ -0,0 +1,17 @@
+// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.siyeh.ipp.exceptions.detail;
+
+class Test {
+
+  void foo() {
+    try{
+      if (true) {
+        throw new IllegalArgumentException();
+      } else {
+        throw new NullPointerException();
+      }
+    } catch (RuntimeExcept<caret>ion e) {
+
+    }
+  }
+}

plugins/IntentionPowerPak/test/com/siyeh/ipp/exceptions/detail/CaretAtParameter_after.java

@@ -0,0 +1,19 @@
+// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.siyeh.ipp.exceptions.detail;
+
+class Test {
+
+  void foo() {
+      try {
+          if (true) {
+              throw new IllegalArgumentException();
+          } else {
+              throw new NullPointerException();
+          }
+      } catch (IllegalArgumentException e) {
+
+      } catch (NullPointerException e) {
+
+      }
+  }
+}

plugins/IntentionPowerPak/testSrc/com/siyeh/ipp/exceptions/DetailExceptionsIntentionTest.java

@@ -1,3 +1,4 @@
+// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.siyeh.ipp.exceptions;
 
 import com.siyeh.IntentionPowerPackBundle;
@@ -14,6 +15,7 @@ public class DetailExceptionsIntentionTest extends IPPTestCase {
   public void testForeach() { doTest(); }
   public void testTryWithResources() { doTest(); }
   public void testPolyadicParentheses() { doTest(); }
+  public void testCaretAtParameter() { doTest(); }
 
   @Override
   protected String getIntentionName() {