expect:
        succeeds("check", "-i")
        !file("build/tmp/pmdMain/incremental.cache").exists()
    }

    def "incremental analysis can be enabled"() {
        given:
        Assume.assumeTrue(supportIncrementalAnalysis())
        goodCode()

        when:
        succeeds("pmdMain")

        then:
        file("build/tmp/pmdMain/incremental.cache").exists()

        when:

        when:
        succeeds("pmdMain")

        then:
        outputContains("Running pmd with toolchain '${jdk.javaHome.absolutePath}'.")
    }

    def "uses current jdk if not specified otherwise"() {
        Assume.assumeTrue(fileLockingIssuesSolved())
        given:
        goodCode()
        writeBuildFile()

        when:
        succeeds("pmdMain")

        then:

            }
        """

        file("src/main/java/org/gradle/ruleusing/Class1.java") << breakingDefaultRulesCode()
        file("rules.xml") << customRuleSet()

        expect:
        succeeds(":pmdMain")

        where:
        customRuleSetConfig << [
            'ruleSetConfig = resources.text.fromFile("rules.xml")',
            'ruleSetFiles = files("rules.xml")'
        ]
    }

Note that PMD will run with the same Java version used to run Gradle.

[[sec:pmd_tasks]]
== Tasks

The PMD plugin adds the following tasks to the project:

`pmdMain` — link:{groovyDslPath}/org.gradle.api.plugins.quality.Pmd.html[Pmd]::
+
Runs PMD against the production Java source files.

`pmdTest` — link:{groovyDslPath}/org.gradle.api.plugins.quality.Pmd.html[Pmd]::
+

        buildFile << """
            dependencies {
                //downgrade version:
                pmd "net.sourceforge.pmd:pmd:5.1.1"
            }
        """.stripIndent()

        when:
        fails("pmdMain")

        then:
        failure.assertHasCause("Incremental analysis only supports PMD 6.0.0 and newer. Please upgrade from PMD 5.1.1 or disable incremental analysis.")

        when:
        fails("pmdTest")

    }

    def "unused code rule not triggered when passing subtype parameter"() {
        assumeTrue(supportsAuxclasspath() && fileLockingIssuesSolved())

        expect:
        succeeds "pmdMain"
    }

    private underAnalysisCode() {
        """
            package org.gradle.ruleusing;

            import ch.qos.logback.contrib.json.JsonLayoutBase;