Add basic multiplatform gradle integration test

3 files changed, 50 insertions, 16 deletions

diff --git a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractDefaultVersionsGradleIntegrationTest.kt b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractDefaultVersionsGradleIntegrationTest.kt
index b7f44a4c..80737129 100644
--- a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractDefaultVersionsGradleIntegrationTest.kt
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractDefaultVersionsGradleIntegrationTest.kt
@@ -1,14 +1,30 @@
 package org.jetbrains.dokka.it.gradle
 
+import org.gradle.util.GradleVersion
+import org.junit.Assume
 import org.junit.Test
 
-abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleIntegrationTest() {
+abstract class AbstractDefaultVersionsGradleIntegrationTest(
+    private val minGradleVersion: GradleVersion? = null,
+    private val maxGradleVersion: GradleVersion? = null
+) : AbstractGradleIntegrationTest() {
 
     protected abstract fun execute(versions: BuildVersions)
 
+    private fun executeIfRequirementsAreMet(versions: BuildVersions) {
+        if (minGradleVersion != null) {
+            Assume.assumeTrue(versions.gradleVersion >= minGradleVersion)
+        }
+        if (maxGradleVersion != null) {
+            Assume.assumeTrue(versions.gradleVersion <= maxGradleVersion)
+        }
+
+        execute(versions )
+    }
+
     @Test
-    fun `gradle 5_6_4 kotlin 1_3_72`() {
-        execute(
+    open fun `gradle 5_6_4 kotlin 1_3_72`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "5.6.4",
                 kotlinVersion = "1.3.72"
@@ -17,8 +33,8 @@ abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleInte
     }
 
     @Test
-    fun `gradle 5_6_4 kotlin 1_3_30`() {
-        execute(
+    open fun `gradle 5_6_4 kotlin 1_3_30`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "5.6.4",
                 kotlinVersion = "1.3.30"
@@ -27,8 +43,8 @@ abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleInte
     }
 
     @Test
-    fun `gradle 5_6_4 kotlin 1_4_M2_eap_70`() {
-        execute(
+    open fun `gradle 5_6_4 kotlin 1_4_M2_eap_70`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "5.6.4",
                 kotlinVersion = "1.4-M2-eap-70"
@@ -37,8 +53,8 @@ abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleInte
     }
 
     @Test
-    fun `gradle 6_1_1 kotlin 1_3_72`() {
-        execute(
+    open fun `gradle 6_1_1 kotlin 1_3_72`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "6.1.1",
                 kotlinVersion = "1.3.72"
@@ -47,8 +63,8 @@ abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleInte
     }
 
     @Test
-    fun `gradle 6_5_1 kotlin 1_4_M2_eap_70`() {
-        execute(
+    open fun `gradle 6_5_1 kotlin 1_4_M2_eap_70`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "6.5.1",
                 kotlinVersion = "1.4-M2-eap-70"
@@ -57,8 +73,8 @@ abstract class AbstractDefaultVersionsGradleIntegrationTest : AbstractGradleInte
     }
 
     @Test
-    fun `gradle 6_5_1 kotlin 1_3_72`() {
-        execute(
+    open fun `gradle 6_5_1 kotlin 1_3_72`() {
+        executeIfRequirementsAreMet(
             BuildVersions(
                 gradleVersion = "6.5.1",
                 kotlinVersion = "1.3.72"
diff --git a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractGradleIntegrationTest.kt b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractGradleIntegrationTest.kt
index 2efb9c55..e6b6b0eb 100644
--- a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractGradleIntegrationTest.kt
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractGradleIntegrationTest.kt
@@ -29,7 +29,7 @@ abstract class AbstractGradleIntegrationTest {
     ): GradleRunner {
         return GradleRunner.create()
             .withProjectDir(projectDir)
-            .withGradleVersion(buildVersions.gradleVersion)
+            .withGradleVersion(buildVersions.gradleVersion.version)
             .forwardOutput()
             .withArguments(
                 "-Pkotlin_version=${buildVersions.kotlinVersion}",
@@ -40,6 +40,14 @@ abstract class AbstractGradleIntegrationTest {
 
     }
 
+    fun File.allDescendentsWithExtension(extension: String): Sequence<File> {
+        return this.walkTopDown().filter { it.isFile && it.extension == extension }
+    }
+
+    fun File.allHtmlFiles(): Sequence<File> {
+        return allDescendentsWithExtension("html")
+    }
+
     protected fun assertContainsNoErrorClass(file: File) {
         val fileText = file.readText()
         assertFalse(
diff --git a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/BuildVersions.kt b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/BuildVersions.kt
index 6aa41e7a..2fdd0368 100644
--- a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/BuildVersions.kt
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/BuildVersions.kt
@@ -1,6 +1,16 @@
 package org.jetbrains.dokka.it.gradle
 
+import org.gradle.util.GradleVersion
+
 data class BuildVersions(
-    val gradleVersion: String,
+    val gradleVersion: GradleVersion,
     val kotlinVersion: String
-)
+) {
+    constructor(
+        gradleVersion: String,
+        kotlinVersion: String
+    ) : this(
+        gradleVersion = GradleVersion.version(gradleVersion),
+        kotlinVersion = kotlinVersion
+    )
+}