Test for Java compilation with package name case-rename

subprojects/language-java/src/integTest/groovy/org/gradle/api/tasks/compile/JavaCompileIntegrationTest.groovy

@@ -209,4 +209,68 @@ class JavaCompileIntegrationTest extends AbstractIntegrationSpec {
             }
         """
     }
+
+    def "can compile after package rename"() {
+        buildFile << """
+            apply plugin: "java"
+
+            repositories {
+                mavenCentral()
+            }
+
+            dependencies {
+                testCompile "junit:junit:4.12"
+            }
+        """
+
+        file("src/main/java/com/example/Foo.java") << """
+            package com.example;
+
+            public class Foo {}
+        """
+        file("src/test/java/com/example/FooTest.java") << """
+            package com.example;
+
+            import org.junit.Test;
+
+            public class FooTest {
+                @Test
+                public void test() {
+                    new com.example.Foo();
+                }
+            }
+        """
+
+        when:
+        succeeds "test"
+        then:
+        nonSkippedTasks.contains ":test"
+        file("build/classes/main/com/example/Foo.class").file
+
+        when:
+        // Move source file to case-renamed package
+        file("src/main/java/com/example").deleteDir()
+        file("src/main/java/com/Example/Foo.java") << """
+            package com.Example;
+
+            public class Foo {}
+        """
+        file("src/test/java/com/example/FooTest.java").text = """
+            package com.example;
+
+            import org.junit.Test;
+
+            public class FooTest {
+                @Test
+                public void test() {
+                    new com.Example.Foo();
+                }
+            }
+        """
+
+        succeeds "test"
+        then:
+        nonSkippedTasks.contains ":test"
+        file("build/classes/main/com/Example/Foo.class").file
+    }
 }