test against newest kotlin, gradle, ktlint, and AGP versions

drop testing for gradle 7.4 and 7.5 because they cause our tests with kotlin 2.x to fail, but the plugin will still work in those gradle versions if kotlin 1.x is being used

Update CHANGELOG.md

Co-authored-by: Jonathan Leitschuh <jonathan.leitschuh@gmail.com>

Author: wakingrufus

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 ## [Unreleased]
 
 - Update Gradle wrapper and Gradle versions for testing. [#819](https://github.com/JLLeitschuh/ktlint-gradle/pull/819)
+- Test against newest kotlin, gradle, ktlint, and AGP versions [#833](https://github.com/JLLeitschuh/ktlint-gradle/pull/833). Drop testing for gradle 7.4 and 7.5 because they cause our tests with kotlin 2.x to fail, but the plugin will still work in those gradle versions if kotlin 1.x is being used
 
 ## [12.1.2] - 2024-11-25
 

plugin/src/main/kotlin/org/jlleitschuh/gradle/ktlint/KtlintBasePlugin.kt

@@ -24,7 +24,6 @@ open class KtlintBasePlugin : Plugin<Project> {
 
     override fun apply(target: Project) {
         target.checkMinimalSupportedGradleVersion()
-
         val filterTargetApplier: FilterApplier = {
             target.tasks.withType(BaseKtLintCheckTask::class.java).configureEach(it)
         }
@@ -54,6 +53,10 @@ open class KtlintBasePlugin : Plugin<Project> {
         )
     }
 
+    companion object {
+        const val LOWEST_SUPPORTED_GRADLE_VERSION = "7.4.2"
+    }
+
     /**
      * @deprecated Now that we declare gradle API metadata, this code should not be needed.
      * Ee need to check which version of gradle introduced gradle API metadata checking
@@ -66,8 +69,4 @@ open class KtlintBasePlugin : Plugin<Project> {
             )
         }
     }
-
-    companion object {
-        const val LOWEST_SUPPORTED_GRADLE_VERSION = "7.4.2"
-    }
 }

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/KotlinJsPluginTests.kt

@@ -18,13 +18,13 @@ import java.io.File
  */
 @GradleTestVersions
 class KotlinJsPluginTests : AbstractPluginTest() {
-    private fun jsProjectSetup(gradleVersion: GradleVersion): (File) -> Unit = {
-        projectSetup("js", gradleVersion).invoke(it)
+    private fun jsProjectSetup(): (File) -> Unit = {
+        projectSetup("js").invoke(it)
 
         //language=Groovy
         it.resolve("build.gradle").appendText(
             """
-            
+
             kotlin {
                 js(IR) {
                     nodejs()
@@ -37,7 +37,7 @@ class KotlinJsPluginTests : AbstractPluginTest() {
     @DisplayName("Should add check tasks")
     @CommonTest
     fun addCheckTasks(gradleVersion: GradleVersion) {
-        project(gradleVersion, projectSetup = jsProjectSetup(gradleVersion)) {
+        project(gradleVersion, projectSetup = jsProjectSetup()) {
             build("-m", CHECK_PARENT_TASK_NAME) {
                 val ktlintTasks = output.lineSequence().toList()
 
@@ -59,7 +59,7 @@ class KotlinJsPluginTests : AbstractPluginTest() {
     @DisplayName("Should add format tasks")
     @CommonTest
     fun addFormatTasks(gradleVersion: GradleVersion) {
-        project(gradleVersion, projectSetup = jsProjectSetup(gradleVersion)) {
+        project(gradleVersion, projectSetup = jsProjectSetup()) {
             build("-m", FORMAT_PARENT_TASK_NAME) {
                 val ktlintTasks = output.lineSequence().toList()
 
@@ -81,7 +81,7 @@ class KotlinJsPluginTests : AbstractPluginTest() {
     @DisplayName("Should fail check task on un-formatted sources")
     @CommonTest
     fun failOnStyleViolation(gradleVersion: GradleVersion) {
-        project(gradleVersion, projectSetup = jsProjectSetup(gradleVersion)) {
+        project(gradleVersion, projectSetup = jsProjectSetup()) {
             withFailingSources()
 
             buildAndFail(CHECK_PARENT_TASK_NAME) {

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/KotlinMultiplatformPluginTests.kt

@@ -16,8 +16,8 @@ import java.io.File
  */
 @GradleTestVersions
 class KotlinMultiplatformPluginTests : AbstractPluginTest() {
-    private fun multiplatformProjectSetup(gradleVersion: GradleVersion): (File) -> Unit = {
-        projectSetup("multiplatform", gradleVersion).invoke(it)
+    private fun multiplatformProjectSetup(): (File) -> Unit = {
+        projectSetup("multiplatform").invoke(it)
 
         //language=Groovy
         it.resolve("build.gradle").appendText(
@@ -36,7 +36,7 @@ class KotlinMultiplatformPluginTests : AbstractPluginTest() {
     @DisplayName("Should add check on all sources")
     @CommonTest
     fun addCheckTasks(gradleVersion: GradleVersion) {
-        project(gradleVersion, projectSetup = multiplatformProjectSetup(gradleVersion)) {
+        project(gradleVersion, projectSetup = multiplatformProjectSetup()) {
             build("-m", CHECK_PARENT_TASK_NAME) {
                 val ktlintTasks = output.lineSequence().toList()
 

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/KtLintSupportedVersionsTest.kt

@@ -180,7 +180,10 @@ class KtLintSupportedVersionsTest : AbstractPluginTest() {
             "0.50.0",
             "1.0.1",
             "1.1.1",
-            "1.2.1"
+            "1.2.1",
+            "1.3.1",
+            "1.4.1",
+            "1.5.0"
         )
 
         override fun provideArguments(

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/KtlintPluginTest.kt

@@ -713,7 +713,7 @@ class KtlintPluginTest : AbstractPluginTest() {
     @CommonTest
     fun checkAdditionalSources(gradleVersion: GradleVersion) {
         fun projectSetup(file: File) {
-            projectSetup("jvm", gradleVersion).invoke(file)
+            projectSetup("jvm").invoke(file)
 
             //language=Groovy
             file.resolve("build.gradle").appendText(

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/UnsupportedGradleTest.kt

@@ -5,6 +5,7 @@ import org.gradle.util.GradleVersion
 import org.jlleitschuh.gradle.ktlint.testdsl.buildAndFail
 import org.jlleitschuh.gradle.ktlint.testdsl.getMajorJavaVersion
 import org.jlleitschuh.gradle.ktlint.testdsl.project
+import org.jlleitschuh.gradle.ktlint.testdsl.projectSetup
 import org.junit.jupiter.api.Assumptions
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.Test
@@ -24,7 +25,10 @@ class UnsupportedGradleTest : AbstractPluginTest() {
          */
         Assumptions.assumeFalse(getMajorJavaVersion() >= 21)
 
-        project(GradleVersion.version("7.4.1")) {
+        project(
+            gradleVersion = GradleVersion.version("7.4.1"),
+            projectSetup = projectSetup("jvm", "1.9.22")
+        ) {
             buildAndFail(CHECK_PARENT_TASK_NAME) {
                 assertThat(output).contains(
                     "Current version of plugin supports minimal Gradle version: " +

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/android/KtlintPluginAndroidTest.kt

@@ -80,9 +80,8 @@ class KtlintPluginAndroidTest : AbstractPluginTest() {
             "0.47.1",
             maximumJava = 17
         ),
-        GRADLE_7_5_AGP_7_4(
-            // AGP 7.4 requires Gradle 7.5
-            GradleVersion.version("7.5"),
+        AGP_7_4(
+            GradleVersion.version(TestVersions.minSupportedGradleVersion),
             "7.4.2",
             // AGP 4.1 requires kotlin 1.5.20
             "1.5.20",

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/testdsl/TestAnnotations.kt

@@ -1,7 +1,6 @@
 package org.jlleitschuh.gradle.ktlint.testdsl
 
 import org.gradle.util.GradleVersion
-import org.jlleitschuh.gradle.ktlint.KtlintBasePlugin
 import org.junit.jupiter.api.extension.ExtensionContext
 import org.junit.jupiter.params.provider.Arguments
 import org.junit.jupiter.params.provider.ArgumentsProvider
@@ -11,13 +10,13 @@ import kotlin.streams.asStream
 
 @Suppress("ConstPropertyName")
 object TestVersions {
-    const val minSupportedGradleVersion = KtlintBasePlugin.LOWEST_SUPPORTED_GRADLE_VERSION
-    const val maxSupportedGradleVersion = "8.11.1"
+    const val minSupportedGradleVersion = "7.6.3" // lowest version for testing
+    const val maxSupportedGradleVersion = "8.12.1"
     val pluginVersion = File("VERSION_CURRENT.txt").readText().trim()
     const val minSupportedKotlinPluginVersion = "1.4.32"
-    const val maxSupportedKotlinPluginVersion = "1.9.23"
+    const val maxSupportedKotlinPluginVersion = "2.1.10"
     const val minAgpVersion = "4.1.0"
-    const val maxAgpVersion = "8.4.0"
+    const val maxAgpVersion = "8.8.0"
 }
 
 @Target(AnnotationTarget.FUNCTION, AnnotationTarget.CLASS)

plugin/src/test/kotlin/org/jlleitschuh/gradle/ktlint/testdsl/TestDsl.kt

@@ -10,7 +10,7 @@ import java.io.File
 fun AbstractPluginTest.project(
     gradleVersion: GradleVersion,
     projectPath: File = projectRoot,
-    projectSetup: (File) -> Unit = defaultProjectSetup(gradleVersion),
+    projectSetup: (File) -> Unit = defaultProjectSetup(),
     test: TestProject.() -> Unit = {}
 ): TestProject {
     projectSetup(projectPath)
@@ -152,14 +152,13 @@ fun TestProject.buildAndFail(
         .run { assertions() }
 }
 
-fun defaultProjectSetup(gradleVersion: GradleVersion): (File) -> Unit =
-    projectSetup("jvm", gradleVersion)
+fun defaultProjectSetup(): (File) -> Unit =
+    projectSetup("jvm")
 
 fun projectSetup(
     kotlinPluginType: String,
-    gradleVersion: GradleVersion
+    kotlinPluginVersion: String = maxSupportedKotlinPluginVersion
 ): (File) -> Unit = {
-    val kotlinPluginVersion = maxSupportedKotlinPluginVersion
     //language=Groovy
     it.resolve("build.gradle").writeText(
         """