Merge branch '__rultor'

Author: rultor

qulice-checkstyle/src/main/java/com/qulice/checkstyle/DiamondOperatorCheck.java

@@ -189,7 +189,7 @@ private static DetailAST secondChild(final DetailAST node) {
      * @return True if node contains angle brackets only
      */
     private static boolean isDiamondOperatorUsed(final DetailAST node) {
-        return node.getChildCount() == 2
+        return node != null && node.getChildCount() == 2
             && node.getFirstChild().getType() == TokenTypes.GENERIC_START
             && node.getLastChild().getType() == TokenTypes.GENERIC_END;
     }

qulice-maven-plugin/src/main/java/com/qulice/maven/AbstractQuliceMojo.java

@@ -106,6 +106,14 @@ public abstract class AbstractQuliceMojo extends AbstractMojo
     )
     private final Collection<String> asserts = new LinkedList<>();
 
+    /**
+     * The source encoding.
+     *
+     * @parameter expression="${project.build.sourceEncoding}" required="true"
+     */
+    @Parameter(property = "encoding", defaultValue = "${project.build.sourceEncoding}")
+    private String charset;
+
     /**
      * Set Maven Project (used mostly for unit testing).
      * @param proj The project to set
@@ -148,6 +156,14 @@ public final void setExcludes(final Collection<String> exprs) {
         this.excludes.addAll(exprs);
     }
 
+    /**
+     * Set source code encoding.
+     * @param encoding Source code encoding
+     */
+    public void setEncoding(final String encoding) {
+        this.charset = encoding;
+    }
+
     @Override
     public final void contextualize(final Context ctx) {
         this.environment.setContext(ctx);
@@ -167,6 +183,7 @@ public final void execute() throws MojoFailureException {
         );
         this.environment.setExcludes(this.excludes);
         this.environment.setAsser(this.asserts);
+        this.environment.setEncoding(this.charset);
         final long start = System.nanoTime();
         this.doExecute();
         Logger.info(

qulice-maven-plugin/src/main/java/com/qulice/maven/DefaultMavenEnvironment.java

@@ -41,6 +41,7 @@
 import java.net.URI;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.nio.charset.Charset;
 import java.security.PrivilegedAction;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -96,6 +97,11 @@ public final class DefaultMavenEnvironment implements MavenEnvironment {
      */
     private final Collection<String> asser = new LinkedList<>();
 
+    /**
+     * Source code encoding charset.
+     */
+    private String charset = "UTF-8";
+
     @Override
     public String param(final String name, final String value) {
         String ret = this.iproperties.getProperty(name);
@@ -292,6 +298,21 @@ public void setAsser(final Collection<String> ass) {
         this.asser.addAll(ass);
     }
 
+    public void setEncoding(final String encoding) {
+        this.charset = encoding;
+    }
+
+    /**
+     * Get source files encoding.
+     * @return Charset of the source files
+     */
+    public Charset encoding() {
+        if (this.charset == null || this.charset.isEmpty()) {
+            this.charset = "UTF-8";
+        }
+        return Charset.forName(this.charset);
+    }
+
     /**
      * Creates URL ClassLoader in privileged block.
      *

qulice-maven-plugin/src/main/java/com/qulice/maven/MavenEnvironment.java

@@ -32,6 +32,7 @@
 
 import com.qulice.spi.Environment;
 import java.io.File;
+import java.nio.charset.Charset;
 import java.util.Collection;
 import java.util.Properties;
 import org.apache.maven.project.MavenProject;
@@ -182,5 +183,10 @@ public boolean exclude(final String check, final String name) {
         public Collection<String> excludes(final String checker) {
             return this.env.excludes(checker);
         }
+
+        @Override
+        public Charset encoding() {
+            return this.env.encoding();
+        }
     }
 }

qulice-maven-plugin/src/test/java/com/qulice/maven/DefaultMavenEnvironmentTest.java

@@ -31,6 +31,7 @@
 package com.qulice.maven;
 
 import com.google.common.collect.ImmutableList;
+import java.nio.charset.StandardCharsets;
 import java.util.Collections;
 import org.apache.maven.project.MavenProject;
 import org.hamcrest.MatcherAssert;
@@ -147,4 +148,17 @@ void producesEmptyExcludesWhenNoMatches() {
             Matchers.empty()
         );
     }
+
+    /**
+     * Default source files encoding should be UFT-8.
+     */
+    @Test
+    void defaultEncodingIsUtf() {
+        final DefaultMavenEnvironment env = new DefaultMavenEnvironment();
+        MatcherAssert.assertThat(
+            "Default encoding should be UTF-8",
+            env.encoding(),
+            Matchers.is(StandardCharsets.UTF_8)
+        );
+    }
 }

qulice-maven-plugin/src/test/java/com/qulice/maven/MavenProjectMocker.java

@@ -52,9 +52,8 @@ public final class MavenProjectMocker {
      * In this basedir.
      * @param dir The directory
      * @return This object
-     * @throws Exception If something wrong happens inside
      */
-    public MavenProjectMocker inBasedir(final File dir) throws Exception {
+    public MavenProjectMocker inBasedir(final File dir) {
         Mockito.doReturn(dir).when(this.project).getBasedir();
         final Build build = Mockito.mock(Build.class);
         Mockito.doReturn(build).when(this.project).getBuild();

qulice-pmd/src/main/java/com/qulice/pmd/SourceValidator.java

@@ -33,6 +33,7 @@
 import com.jcabi.log.Logger;
 import com.qulice.spi.Environment;
 import java.io.File;
+import java.nio.charset.Charset;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedList;
@@ -70,6 +71,11 @@ final class SourceValidator {
      */
     private final PMDConfiguration config;
 
+    /**
+     * Source files encoding.
+     */
+    private final Charset encoding;
+
     /**
      * Creates new instance of <code>SourceValidator</code>.
      * @param env Environment
@@ -79,6 +85,7 @@ final class SourceValidator {
         this.listener = new PmdListener(env);
         this.renderer = new PmdRenderer();
         this.config = new PMDConfiguration();
+        this.encoding = env.encoding();
     }
 
     /**
@@ -95,6 +102,7 @@ public Collection<PmdError> validate(
         this.config.setMinimumPriority(RulePriority.LOW);
         this.config.setIgnoreIncrementalAnalysis(true);
         this.config.setShowSuppressedViolations(true);
+        this.config.setSourceEncoding(this.encoding.name());
         final Report report = new Report();
         report.addListener(this.listener);
         this.context.setReport(report);

qulice-pmd/src/test/java/com/qulice/pmd/PmdValidatorTest.java

@@ -751,4 +751,17 @@ void allowsSwaggerAnnotations() throws Exception {
             )
         ).validate();
     }
+
+    /**
+     * PmdValidator can prohibit unicode characters in method names.
+     * @throws Exception If something wrong happens inside.
+     */
+    @Test
+    void prohibitsUnicodeCharactersInMethodNames() throws Exception {
+        new PmdAssert(
+            "UnicodeCharactersInMethodNames.java",
+            Matchers.is(false),
+            Matchers.containsString("MethodNamingConventions")
+        ).validate();
+    }
 }

qulice-pmd/src/test/resources/com/qulice/pmd/UnicodeCharactersInMethodNames.java

@@ -0,0 +1,9 @@
+package foo;
+
+public final class UnderstandsMethodReferences {
+    private static final String SOME_STRING = "φ";
+
+    public String φTestMethod() {
+        return UnderstandsMethodReferences.SOME_STRING;
+    }
+}

qulice-spi/src/main/java/com/qulice/spi/Environment.java

@@ -32,6 +32,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.Collection;
@@ -122,6 +123,12 @@ public interface Environment {
      */
     Collection<String> excludes(String checker);
 
+    /**
+     * Encoding for the files.
+     * @return Source files charset
+     */
+    Charset encoding();
+
     /**
      * Mock of {@link Environment}.
      *
@@ -323,5 +330,10 @@ public Collection<String> excludes(final String checker) {
             }
             return exc;
         }
+
+        @Override
+        public Charset encoding() {
+            return StandardCharsets.UTF_8;
+        }
     }
 }