Get the unit and DAS tests running (#8)

* Move the testData tests files into src/test/*

* Additional changes to get all tests, unit and DAS tests, running.

Author: jwren

third_party/build.gradle.kts

@@ -110,6 +110,11 @@ tasks {
     wrapper {
         gradleVersion = providers.gradleProperty("gradleVersion").get()
     }
+    test {
+        // TODO figure out how to not need the sdk path hard coded:
+        // Replace the [Dart SDK Path] to run the Dart Analysis Server tests
+        jvmArgs("-Ddart.sdk=[Dart SDK path]]")
+    }
 }
 
 // https://plugins.jetbrains.com/docs/intellij/tools-intellij-platform-gradle-plugin-faq.html#how-to-check-the-latest-available-eap-release

third_party/src/test/java/com/jetbrains/lang/dart/util/DartTestUtils.java

@@ -41,17 +41,17 @@ private static String findTestDataPath() {
       return FileUtil.toSystemIndependentName(PathManager.getHomePath() + "/contrib/Dart/testData");
     }
 
-    final File f = new File("testData");
+    final File f = new File("src/test/testData");
     if (f.isDirectory()) {
       // started from 'Dart-plugin' project
       return FileUtil.toSystemIndependentName(f.getAbsolutePath());
     }
 
     final String parentPath = PathUtil.getParentPath(PathManager.getHomePath());
 
-    if (new File(parentPath + "/intellij-plugins").isDirectory()) {
+    if (new File(parentPath + "/dart-intellij-third-party").isDirectory()) {
       // started from IntelliJ IDEA Community Edition + Dart Plugin project
-      return FileUtil.toSystemIndependentName(parentPath + "/intellij-plugins/Dart/testData");
+      return FileUtil.toSystemIndependentName(parentPath + "/dart-intellij-third-party/third_party/src/test/testData");
     }
 
     if (new File(parentPath + "/contrib").isDirectory()) {