From a9cdbfc0ecb0c749888563ad420ddc5eda90bdfe Mon Sep 17 00:00:00 2001
From: Bruno Bowden <github@brunobowden.com>
Date: Sun, 10 Jan 2016 02:34:48 -0800
Subject: [PATCH] Gradle 2.9 unsupported error

- Throws explanatory error for gradle version 2.9 or later
- Meant to be temporary until #568 is fixed
- Fixes #581
---
 .../j2objcgradle/J2objcPlugin.groovy           |  2 +-
 .../j2objcgradle/tasks/Utils.groovy            | 11 +++++++++--
 .../j2objcgradle/tasks/UtilsTest.groovy        | 18 +++++++++++-------
 3 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/src/main/groovy/com/github/j2objccontrib/j2objcgradle/J2objcPlugin.groovy b/src/main/groovy/com/github/j2objccontrib/j2objcgradle/J2objcPlugin.groovy
index c773dd16..45a0e9a3 100644
--- a/src/main/groovy/com/github/j2objccontrib/j2objcgradle/J2objcPlugin.groovy
+++ b/src/main/groovy/com/github/j2objccontrib/j2objcgradle/J2objcPlugin.groovy
@@ -56,7 +56,7 @@ class J2objcPlugin implements Plugin<Project> {
 
         // This avoids a lot of "project." prefixes, such as "project.tasks.create"
         project.with {
-            Utils.checkMinGradleVersion(GradleVersion.current())
+            Utils.checkGradleVersion(GradleVersion.current())
             getPluginManager().apply(JavaPlugin)
 
             extensions.create('j2objcConfig', J2objcConfig, project)
diff --git a/src/main/groovy/com/github/j2objccontrib/j2objcgradle/tasks/Utils.groovy b/src/main/groovy/com/github/j2objccontrib/j2objcgradle/tasks/Utils.groovy
index 9009aa25..07e15272 100644
--- a/src/main/groovy/com/github/j2objccontrib/j2objcgradle/tasks/Utils.groovy
+++ b/src/main/groovy/com/github/j2objccontrib/j2objcgradle/tasks/Utils.groovy
@@ -55,12 +55,19 @@ class Utils {
     // Prevent construction of this class, confines usage to static methods
     private Utils() { }
 
-    static void checkMinGradleVersion(GradleVersion gradleVersion) {
+    static void checkGradleVersion(GradleVersion gradleVersion) {
         final GradleVersion minGradleVersion = GradleVersion.version('2.4')
-        if (gradleVersion.compareTo(minGradleVersion) < 0) {
+        if (gradleVersion.compareTo(GradleVersion.version('2.4')) < 0) {
             throw new InvalidUserDataException(
                     "J2ObjC Gradle Plugin requires minimum Gradle version: $minGradleVersion")
         }
+
+        final GradleVersion unsupportedGradleVersion = GradleVersion.version('2.9')
+        if (gradleVersion.compareTo(unsupportedGradleVersion) >= 0) {
+            throw new InvalidUserDataException(
+                    "Switch to Gradle 2.8 as version $unsupportedGradleVersion is unsupported due to:\n" +
+                    "https://github.com/j2objc-contrib/j2objc-gradle/issues/568")
+        }
     }
 
     static List<Integer> parseVersionComponents(String ver) {
diff --git a/src/test/groovy/com/github/j2objccontrib/j2objcgradle/tasks/UtilsTest.groovy b/src/test/groovy/com/github/j2objccontrib/j2objcgradle/tasks/UtilsTest.groovy
index cfb8e06c..56b78457 100644
--- a/src/test/groovy/com/github/j2objccontrib/j2objcgradle/tasks/UtilsTest.groovy
+++ b/src/test/groovy/com/github/j2objccontrib/j2objcgradle/tasks/UtilsTest.groovy
@@ -59,16 +59,20 @@ class UtilsTest {
 
     @Test
     void testCheckMinGradleVersion_valid() {
-        Utils.checkMinGradleVersion(GradleVersion.version('2.4'))
-        Utils.checkMinGradleVersion(GradleVersion.version('2.4.1'))
-        Utils.checkMinGradleVersion(GradleVersion.version('2.5'))
-        Utils.checkMinGradleVersion(GradleVersion.version('3.0'))
-        Utils.checkMinGradleVersion(GradleVersion.version('10.0'))
+        Utils.checkGradleVersion(GradleVersion.version('2.4'))
+        Utils.checkGradleVersion(GradleVersion.version('2.4.1'))
+        Utils.checkGradleVersion(GradleVersion.version('2.5'))
+        Utils.checkGradleVersion(GradleVersion.version('2.8'))
     }
 
     @Test(expected=InvalidUserDataException)
-    void testCheckMinGradleVersion_invalid() {
-        Utils.checkMinGradleVersion(GradleVersion.version('2.3'))
+    void testCheckMinGradleVersion_belowMinimum() {
+        Utils.checkGradleVersion(GradleVersion.version('2.3'))
+    }
+
+    @Test(expected=InvalidUserDataException)
+    void testCheckMinGradleVersion_aboveMaximum() {
+        Utils.checkGradleVersion(GradleVersion.version('2.9'))
     }
 
     @Test