3 files changed, 84 insertions, 0 deletions
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
new file mode 100644
index 00000000..271720fe
--- /dev/null
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/AbstractGradleIntegrationTest.kt
@@ -0,0 +1,49 @@
+package org.jetbrains.dokka.it.gradle
+
+import org.gradle.testkit.runner.GradleRunner
+import org.junit.Rule
+import org.junit.rules.TemporaryFolder
+import java.io.File
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
+
+abstract class AbstractGradleIntegrationTest {
+
+    @get:Rule
+    val projectTemporaryFolder = TemporaryFolder()
+
+    val projectPath get() = projectTemporaryFolder.root.toPath()
+
+    val projectDir get() = projectTemporaryFolder.root
+
+
+    fun createGradleRunner(
+        buildVersions: BuildVersions, arguments: Array<String>
+    ): GradleRunner {
+        return GradleRunner.create()
+            .withProjectDir(projectDir)
+            .withGradleVersion(buildVersions.gradleVersion)
+            .forwardOutput()
+            .withArguments("-Pkotlin_version=${buildVersions.kotlinVersion}", *arguments)
+            .withDebug(true)
+
+    }
+
+    protected fun assertContainsNoErrorClass(file: File) {
+        val fileText = file.readText()
+        assertFalse(
+            fileText.contains("ERROR CLASS", ignoreCase = true),
+            "Unexpected `ERROR CLASS` in ${file.path}\n" + fileText
+        )
+    }
+
+    protected fun assertNoUnresolvedLInks(file: File) {
+        val regex = Regex("[\"']#[\"']")
+        val fileText = file.readText()
+        assertFalse(
+            fileText.contains(regex),
+            "Unexpected unresolved link in ${file.path}\n" + fileText
+        )
+    }
+}
+
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
new file mode 100644
index 00000000..6aa41e7a
--- /dev/null
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/BuildVersions.kt
@@ -0,0 +1,6 @@
+package org.jetbrains.dokka.it.gradle
+
+data class BuildVersions(
+    val gradleVersion: String,
+    val kotlinVersion: String
+)
diff --git a/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/utils.kt b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/utils.kt
new file mode 100644
index 00000000..2516b151
--- /dev/null
+++ b/integration-tests/gradle/src/main/kotlin/org/jetbrains/dokka/it/gradle/utils.kt
@@ -0,0 +1,29 @@
+package org.jetbrains.dokka.it.gradle
+
+import java.io.IOException
+import java.nio.file.*
+import java.nio.file.attribute.BasicFileAttributes
+
+fun Path.copy(to: Path) {
+    Files.walkFileTree(this, CopyFileVisitor(this, to))
+}
+
+class CopyFileVisitor(private var sourcePath: Path, private val targetPath: Path) : SimpleFileVisitor<Path>() {
+    @Throws(IOException::class)
+    override fun preVisitDirectory(
+        dir: Path,
+        attrs: BasicFileAttributes
+    ): FileVisitResult {
+        Files.createDirectories(targetPath.resolve(sourcePath.relativize(dir)))
+        return FileVisitResult.CONTINUE
+    }
+
+    @Throws(IOException::class)
+    override fun visitFile(
+        file: Path,
+        attrs: BasicFileAttributes
+    ): FileVisitResult {
+        Files.copy(file, targetPath.resolve(sourcePath.relativize(file)), StandardCopyOption.REPLACE_EXISTING)
+        return FileVisitResult.CONTINUE
+    }
+}