Issue checkstyle#6207: Add xpath regression test for UnusedImports

src/it/java/org/checkstyle/suppressionxpathfilter/XpathRegressionUnusedImportsTest.java

@@ -0,0 +1,81 @@
+////////////////////////////////////////////////////////////////////////////////
+// checkstyle: Checks Java source code for adherence to a set of rules.
+// Copyright (C) 2001-2019 the original author or authors.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+////////////////////////////////////////////////////////////////////////////////
+
+package org.checkstyle.suppressionxpathfilter;
+
+import java.io.File;
+import java.util.Collections;
+import java.util.List;
+
+import org.junit.Test;
+
+import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
+import com.puppycrawl.tools.checkstyle.checks.imports.UnusedImportsCheck;
+
+public class XpathRegressionUnusedImportsTest extends AbstractXpathTestSupport {
+
+    private final String checkName = UnusedImportsCheck.class.getSimpleName();
+
+    @Override
+    protected String getCheckName() {
+        return checkName;
+    }
+
+    @Test
+    public void testOne() throws Exception {
+        final File fileToProcess =
+                new File(getPath("SuppressionXpathRegressionUnusedImportsOne.java"));
+
+        final DefaultConfiguration moduleConfig =
+                createModuleConfig(UnusedImportsCheck.class);
+
+        final String[] expectedViolation = {
+            "3:8: " + getCheckMessage(UnusedImportsCheck.class,
+                    UnusedImportsCheck.MSG_KEY, "java.util.List"),
+        };
+
+        final List<String> expectedXpathQueries = Collections.singletonList(
+                "/IMPORT/DOT[./IDENT[@text='List']]/DOT/IDENT[@text='java']");
+
+        runVerifications(moduleConfig, fileToProcess, expectedViolation,
+                expectedXpathQueries);
+    }
+
+    @Test
+    public void testTwo() throws Exception {
+        final File fileToProcess =
+                new File(getPath("SuppressionXpathRegressionUnusedImportsTwo.java"));
+
+        final DefaultConfiguration moduleConfig =
+                createModuleConfig(UnusedImportsCheck.class);
+
+        final String[] expectedViolation = {
+            "3:15: " + getCheckMessage(UnusedImportsCheck.class,
+                    UnusedImportsCheck.MSG_KEY, "java.util.Map.Entry"),
+        };
+
+        final List<String> expectedXpathQueries = Collections.singletonList(
+                "/STATIC_IMPORT/DOT[./IDENT[@text='Entry']]/DOT[./IDENT[@text='Map']]"
+                        + "/DOT/IDENT[@text='java']");
+
+        runVerifications(moduleConfig, fileToProcess, expectedViolation,
+                expectedXpathQueries);
+    }
+
+}

src/it/resources/org/checkstyle/suppressionxpathfilter/unusedimports/SuppressionXpathRegressionUnusedImportsOne.java

@@ -0,0 +1,7 @@
+package org.checkstyle.suppressionxpathfilter.unusedimports;
+
+import java.util.List; // warn
+
+public class SuppressionXpathRegressionUnusedImportsOne {
+
+}

src/it/resources/org/checkstyle/suppressionxpathfilter/unusedimports/SuppressionXpathRegressionUnusedImportsTwo.java

@@ -0,0 +1,7 @@
+package org.checkstyle.suppressionxpathfilter.unusedimports;
+
+import static java.util.Map.Entry; // warn
+
+public class SuppressionXpathRegressionUnusedImportsTwo {
+
+}