IG: Add option to ignore methods with throws (IDEA-160163)

in "JUnit test method without any assertions" inspection

plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/junit/TestMethodWithoutAssertionInspectionBase.java

@@ -20,6 +20,7 @@ public class TestMethodWithoutAssertionInspectionBase extends BaseInspection {
 
   protected final MethodMatcher methodMatcher;
   @SuppressWarnings("PublicField") public boolean assertKeywordIsAssertion;
+  @SuppressWarnings("PublicField") public boolean ignoreIfExceptionThrown;
 
   public TestMethodWithoutAssertionInspectionBase() {
     methodMatcher = new MethodMatcher(false, "assertionMethods")
@@ -84,6 +85,9 @@ public class TestMethodWithoutAssertionInspectionBase extends BaseInspection {
       if (TestUtils.hasExpectedExceptionAnnotation(method)) {
         return;
       }
+      if (ignoreIfExceptionThrown && method.getThrowsList().getReferenceElements().length > 0) {
+        return;
+      }
       if (containsAssertion(method)) {
         return;
       }

plugins/InspectionGadgets/src/com/siyeh/ig/junit/TestMethodWithoutAssertionInspection.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2015 Dave Griffith, Bas Leijdekkers
+ * Copyright 2003-2017 Dave Griffith, Bas Leijdekkers
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package com.siyeh.ig.junit;
 import com.intellij.codeInspection.ui.ListTable;
 import com.intellij.codeInspection.ui.ListWrappingTableModel;
 import com.intellij.util.ui.CheckBox;
+import com.intellij.util.ui.FormBuilder;
 import com.siyeh.InspectionGadgetsBundle;
 import com.siyeh.ig.ui.UiUtils;
 
@@ -29,15 +30,17 @@ public class TestMethodWithoutAssertionInspection extends TestMethodWithoutAsser
 
   @Override
   public JComponent createOptionsPanel() {
-    final JPanel panel = new JPanel(new BorderLayout());
     final ListTable table = new ListTable(
       new ListWrappingTableModel(Arrays.asList(methodMatcher.getClassNames(), methodMatcher.getMethodNamePatterns()), "Assertion class name",
                                  InspectionGadgetsBundle.message("method.name.regex")));
-    final JPanel tablePanel = UiUtils.createAddRemoveTreeClassChooserPanel(table, "Choose assertion class");
-    final CheckBox checkBox =
+    final CheckBox checkBox1 =
       new CheckBox(InspectionGadgetsBundle.message("assert.keyword.is.considered.an.assertion"), this, "assertKeywordIsAssertion");
-    panel.add(tablePanel, BorderLayout.CENTER);
-    panel.add(checkBox, BorderLayout.SOUTH);
-    return panel;
+    final CheckBox checkBox2 =
+      new CheckBox("Ignore test methods which declare exceptions", this, "ignoreIfExceptionThrown");
+    return new FormBuilder()
+      .addComponentFillVertically(UiUtils.createAddRemoveTreeClassChooserPanel(table, "Choose assertion class"), 0)
+      .addComponent(checkBox1)
+      .addComponent(checkBox2)
+      .getPanel();
   }
 }

plugins/InspectionGadgets/src/inspectionDescriptions/TestMethodWithoutAssertion.html

@@ -8,7 +8,10 @@ Use the table below to specify which combinations of fully qualified class name
 qualify as assertions.
 Class names also match subclasses.
 <p>
-Use the checkbox below to specify if Java <b>assert</b> statements, using the <b>assert</b> keyword, should be considered an assertion.
+Use the first checkbox below to specify if Java <b>assert</b> statements, using the <b>assert</b> keyword, should be considered an assertion.
+<p>
+Use the second checkbox to ignore test methods which declare exceptions.
+This can be useful when you have tests that will throw an exception on failure and thus don't need any assertions.
 <p>
 
 </body>

plugins/InspectionGadgets/test/com/siyeh/igtest/junit/test_method_without_assertion/TestMethodWithoutAssertion.java

@@ -67,4 +67,9 @@ public class TestMethodWithoutAssertion extends TestCase
             messageDAO.toString();
         }};
     }
+
+    @Test
+    public void testMethodWhichThrowsExceptionOnFailure() throws AssertionError {
+        if (true) throw new AssertionError();
+    }
 }

plugins/InspectionGadgets/testsrc/com/siyeh/ig/junit/TestMethodWithoutAssertionInspectionTest.java

@@ -59,6 +59,8 @@ public class TestMethodWithoutAssertionInspectionTest extends LightInspectionTes
   @Nullable
   @Override
   protected InspectionProfileEntry getInspection() {
-    return new TestMethodWithoutAssertionInspection();
+    final TestMethodWithoutAssertionInspection inspection = new TestMethodWithoutAssertionInspection();
+    inspection.ignoreIfExceptionThrown = true;
+    return inspection;
   }
 }