SQSCANNER-29 Exit code should not be 0 when script fails due to ERROR: Unrecognized option

pom.xml

     <dependency>
       <groupId>org.sonarsource.scanner.api</groupId>
       <artifactId>sonar-scanner-api</artifactId>
-      <version>2.8-build684</version>
+      <version>2.8-build700</version>
     </dependency>
     <dependency>
       <groupId>com.google.code.findbugs</groupId>
             <configuration>
               <rules>
                 <requireFilesSize>
-                  <minsize>510000</minsize>
-                  <maxsize>530000</maxsize>
+                  <minsize>550000</minsize>
+                  <maxsize>560000</maxsize>
                   <files>
                     <file>${project.build.directory}/sonar-scanner-${project.version}.zip</file>
                   </files>

src/main/java/org/sonarsource/scanner/cli/Cli.java

 
       } else if ("-h".equals(arg) || "--help".equals(arg)) {
         printUsage();
+        exit.exit(Exit.SUCCESS);
 
       } else if ("-v".equals(arg) || "--version".equals(arg)) {
         displayVersionOnly = true;
   private void printError(String message) {
     logger.error(message);
     printUsage();
+    exit.exit(Exit.ERROR);
   }
 
   private void printUsage() {
     logger.info(" -v,--version          Display version information");
     logger.info(" -X,--debug            Produce execution debug output");
     logger.info(" -i,--interactive      Run interactively");
-    exit.exit(Exit.SUCCESS);
   }
 }

src/test/java/org/sonarsource/scanner/cli/CliTest.java

 
 import static org.fest.assertions.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
 
 public class CliTest {
   Exit exit = mock(Exit.class);
     assertThat(cli.isDisplayStackTrace()).isFalse();
     assertThat(cli.properties().get("sonar.verbose")).isNull();
   }
+
+  @Test
+  public void should_show_usage() {
+    logs = mock(Logs.class);
+    cli = new Cli(exit, logs);
+    cli.parse(new String[] {"-h"});
+    verify(logs).info("usage: sonar-scanner [options]");
+    verify(exit).exit(Exit.SUCCESS);
+  }
+
+  @Test
+  public void should_show_usage_on_bad_syntax() {
+    logs = mock(Logs.class);
+    cli = new Cli(exit, logs);
+    cli.parse(new String[] {"-w"});
+    verify(logs).error("Unrecognized option: -w");
+    verify(logs).info("usage: sonar-scanner [options]");
+    verify(exit).exit(Exit.ERROR);
+  }
 }