Nicer error message when running the tests with a JRE (#211)

lightbend · Nov 5, 2019 · a6d9f37 · a6d9f37
1 parent dfbef61
commit a6d9f37
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/test/scala/com/typesafe/genjavadoc/util/JavaCompiler.scala b/src/test/scala/com/typesafe/genjavadoc/util/JavaCompiler.scala
@@ -9,6 +9,10 @@ import scala.collection.JavaConverters._
 class JavaCompiler {
 
   private val compiler = ToolProvider.getSystemJavaCompiler()
+  if (compiler == null)
+    throw new IllegalStateException(
+      s"No compiler found - please run the tests with a JDK, not just a JRE (${System.getProperties.get("java.home")})"
+    )
 
   val target = IO.tempDir("java-classes")