diff --git a/src/it/check-fail-with-mismatch-violation-count/invoker.properties b/src/it/check-fail-with-mismatch-violation-count/invoker.properties
new file mode 100644
index 00000000..0221874f
--- /dev/null
+++ b/src/it/check-fail-with-mismatch-violation-count/invoker.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+invoker.goals=verify
+invoker.buildResult=failure
diff --git a/src/it/check-fail-with-mismatch-violation-count/pom.xml b/src/it/check-fail-with-mismatch-violation-count/pom.xml
new file mode 100644
index 00000000..645d0994
--- /dev/null
+++ b/src/it/check-fail-with-mismatch-violation-count/pom.xml
@@ -0,0 +1,57 @@
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.plugins.checkstyle
+ check-fail
+ 1.0-SNAPSHOT
+ jar
+
+ http://maven.apache.org/
+
+
+ UTF-8
+ NewlineAtEndOfFile
+ 314
+ true
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-checkstyle-plugin
+ @project.version@
+
+
+ check
+
+ check
+
+
+
+
+
+
+
diff --git a/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/MyClass.java b/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/MyClass.java
new file mode 100644
index 00000000..666efd9e
--- /dev/null
+++ b/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/MyClass.java
@@ -0,0 +1,27 @@
+package org;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/**
+ * My class.
+ */
+public class MyClass
+{
+}
diff --git a/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/package-info.java b/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/package-info.java
new file mode 100644
index 00000000..6d0409e8
--- /dev/null
+++ b/src/it/check-fail-with-mismatch-violation-count/src/main/java/org/package-info.java
@@ -0,0 +1,23 @@
+/**
+ * Nothing very important here, only a file for checkstyle rule PackageInfo.
+ */
+package org;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
diff --git a/src/it/check-fail-with-mismatch-violation-count/verify.groovy b/src/it/check-fail-with-mismatch-violation-count/verify.groovy
new file mode 100644
index 00000000..c50301e4
--- /dev/null
+++ b/src/it/check-fail-with-mismatch-violation-count/verify.groovy
@@ -0,0 +1,22 @@
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+def buildLog = new File( basedir, 'build.log' )
+
+assert buildLog.text.contains( "The number of violations (1) is not equal to the maximum number of allowed violations (314)" )
diff --git a/src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojo.java b/src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojo.java
index 5ba62853..0c033719 100644
--- a/src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojo.java
+++ b/src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojo.java
@@ -108,6 +108,19 @@ public class CheckstyleViolationCheckMojo extends AbstractMojo {
@Parameter(property = "checkstyle.failOnViolation", defaultValue = "true")
private boolean failOnViolation;
+ /**
+ * Fail the build when the number of violations is not equal to {@link #maxAllowedViolations}.
+ *
This prevents the following scenario:
+ *
+ * - some changes reduce the checkstyle count but maxAllowedViolations is not updated
+ * - some other changes introduces new violations but the build does not fail, as the count left some margin for error
+ *
+ *
+ * * @since 3.6.1
+ */
+ @Parameter(property = "checkstyle.failOnMismatchedAllowedViolationsCount", defaultValue = "false")
+ private boolean failOnMismatchedAllowedViolationsCount;
+
/**
* The maximum number of allowed violations. The execution fails only if the
* number of violations is above this limit.
@@ -599,6 +612,10 @@ public void execute() throws MojoExecutionException, MojoFailureException {
}
getLog().warn("checkstyle:check violations detected but failOnViolation set to false");
+ } else if (failOnMismatchedAllowedViolationsCount && violationCount != maxAllowedViolations) {
+ throw new MojoFailureException("The number of violations (" + violationCount
+ + ") is not equal to the maximum number of allowed violations (" + maxAllowedViolations
+ + ").");
}
if (logViolationCountToConsole) {
if (maxAllowedViolations > 0) {