added test case for classpath suppression file and missing file

Former-commit-id: a423b1289f39757645adf4dae0122bc4cee2d1b6

dependency-check-core/src/test/java/org/owasp/dependencycheck/analyzer/AbstractSuppressionAnalyzerTest.java

@@ -17,31 +17,84 @@
  */
 package org.owasp.dependencycheck.analyzer;
 
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.owasp.dependencycheck.BaseTest;
+import org.owasp.dependencycheck.Engine;
+import org.owasp.dependencycheck.analyzer.exception.AnalysisException;
+import org.owasp.dependencycheck.dependency.Dependency;
+import org.owasp.dependencycheck.suppression.SuppressionParseException;
+import org.owasp.dependencycheck.suppression.SuppressionRule;
+import org.owasp.dependencycheck.utils.Settings;
+
 import java.net.MalformedURLException;
 import java.net.URISyntaxException;
 import java.util.List;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
-import org.junit.Before;
-import org.junit.Test;
-import org.owasp.dependencycheck.BaseTest;
-import org.owasp.dependencycheck.Engine;
-import org.owasp.dependencycheck.analyzer.exception.AnalysisException;
-import org.owasp.dependencycheck.dependency.Dependency;
-import org.owasp.dependencycheck.suppression.SuppressionRule;
-import org.owasp.dependencycheck.utils.Settings;
 
 /**
- *
  * @author Jeremy Long <jeremy.long@owasp.org>
  */
 public class AbstractSuppressionAnalyzerTest extends BaseTest {
 
+    @Rule
+    public ExpectedException exception = ExpectedException.none();
+
+    private AbstractSuppressionAnalyzer instance;
+
     @Before
-    public void setUp() throws Exception {
+    public void createObjectUnderTest() throws Exception {
+        instance = new AbstractSuppressionAnalyzerImpl();
+    }
+
+    /**
+     * Test of getSupportedExtensions method, of class AbstractSuppressionAnalyzer.
+     */
+    @Test
+    public void testGetSupportedExtensions() {
+        Set<String> result = instance.getSupportedExtensions();
+        assertNull(result);
+    }
+
+    /**
+     * Test of getRules method, of class AbstractSuppressionAnalyzer for suppression file declared as URL.
+     */
+    @Test
+    public void testGetRulesFromSuppressionFileFromURL() throws Exception {
+        setSupressionFileFromURL();
+        instance.initialize();
+        int expCount = 5;
+        List<SuppressionRule> result = instance.getRules();
+        assertEquals(expCount, result.size());
+    }
+
+    /**
+     * Test of getRules method, of class AbstractSuppressionAnalyzer for suppression file declared as URL.
+     */
+    @Test
+    public void testGetRulesFromSuppressionFileInClasspath() throws Exception {
+        Settings.setString(Settings.KEYS.SUPPRESSION_FILE, "suppressions.xml");
+        instance.initialize();
+        int expCount = 5;
+        List<SuppressionRule> result = instance.getRules();
+        assertEquals(expCount, result.size());
+    }
+
+    @Test
+    public void testFailureToLocateSuppressionFileInClasspath() throws Exception {
+        Settings.setString(Settings.KEYS.SUPPRESSION_FILE, "doesnotexist.xml");
+        exception.expect(SuppressionParseException.class);
+        instance.initialize();
+    }
+
+    private void setSupressionFileFromURL() throws Exception {
         try {
             final String uri = this.getClass().getClassLoader().getResource("suppressions.xml").toURI().toURL().toString();
             Settings.setString(Settings.KEYS.SUPPRESSION_FILE, uri);
@@ -52,37 +105,6 @@ public class AbstractSuppressionAnalyzerTest extends BaseTest {
         }
     }
 
-    /**
-     * Test of getSupportedExtensions method, of class AbstractSuppressionAnalyzer.
-     */
-    @Test
-    public void testGetSupportedExtensions() {
-        AbstractSuppressionAnalyzer instance = new AbstractSuppressionAnalyzerImpl();
-        Set<String> result = instance.getSupportedExtensions();
-        assertNull(result);
-    }
-
-    /**
-     * Test of initialize method, of class AbstractSuppressionAnalyzer.
-     */
-    @Test
-    public void testInitialize() throws Exception {
-        AbstractSuppressionAnalyzer instance = new AbstractSuppressionAnalyzerImpl();
-        instance.initialize();
-    }
-
-    /**
-     * Test of getRules method, of class AbstractSuppressionAnalyzer.
-     */
-    @Test
-    public void testGetRules() throws Exception {
-        AbstractSuppressionAnalyzer instance = new AbstractSuppressionAnalyzerImpl();
-        instance.initialize();
-        int expCount = 5;
-        List<SuppressionRule> result = instance.getRules();
-        assertEquals(expCount, result.size());
-    }
-
     public class AbstractSuppressionAnalyzerImpl extends AbstractSuppressionAnalyzer {
 
         @Override