Add test on using kotlin.coroutines property in gradle

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KotlinGradlePluginIT.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.gradle
 
 import org.gradle.api.logging.LogLevel
@@ -200,6 +216,20 @@ class KotlinGradleIT: BaseGradleIT() {
         }
     }
 
+    @Test
+    fun testCoroutinesPropertyFromLocalPropertiesFile() {
+        val project = Project("kotlinCoroutinesProject", GRADLE_VERSION)
+        project.setupWorkingDir()
+
+        val localPropertyFile = File(project.projectDir, "local.properties")
+        val coroutinesProperty = "kotlin.coroutines=error"
+        localPropertyFile.writeText(coroutinesProperty)
+
+        project.build("build") {
+            assertContains(coroutinesProperty)
+        }
+    }
+
     @Test
     fun testConvertJavaToKotlin() {
         val project = Project("convertBetweenJavaAndKotlin", GRADLE_VERSION)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -190,6 +190,8 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
         args.coroutinesWarn = coroutines == CoroutineSupport.ENABLED_WITH_WARNING
         args.coroutinesError = coroutines == CoroutineSupport.DISABLED
 
+        logger.warn("Using kotlin.coroutines=${coroutines.compilerArgument}")
+
         if (!incremental) {
             anyClassesCompiled = true
             processCompilerExitCode(compileJvmNotIncrementally(