test/langtools/tools/javac/processing/model/TestSourceVersion.java

@@ -21,11 +21,11 @@
  * questions.
  */
 
 /*
  * @test
- * @bug 7025809 8028543 6415644 8028544 8029942
+ * @bug 7025809 8028543 6415644 8028544 8029942 8187982 8187951
  * @summary Test latest, latestSupported, underscore as keyword, etc.
  * @author  Joseph D. Darcy
  * @modules java.compiler
  *          jdk.compiler
  */

@@ -40,10 +40,11 @@
 public class TestSourceVersion {
     public static void main(String... args) {
         testLatestSupported();
         testVersionVaryingKeywords();
         testRestrictedKeywords();
+        testVar();
     }
 
     private static void testLatestSupported() {
         if (SourceVersion.latest() != RELEASE_10 ||
             SourceVersion.latestSupported() != RELEASE_10)

@@ -94,10 +95,25 @@
                 check(true,  isName(key, version),    "name",    version);
             }
         }
     }
 
+    private static void testVar() {
+
+        for(SourceVersion version : SourceVersion.values()) {
+            check(false, isKeyword("var",     version), "keyword", version);
+            check(false, isKeyword("foo.var", version), "keyword", version);
+            check(false, isKeyword("var.foo", version), "keyword", version);
+
+            // The string "var" doesn't have special handling until release 10.
+            boolean lessThan10 = version.compareTo(RELEASE_10) < 0;
+            check(lessThan10, isName("var", version),     "name", version);
+            check(lessThan10, isName("foo.var", version), "name", version);
+            check(true,       isName("var.foo", version), "name", version);
+        }
+    }
+
     private static void check(boolean result, boolean expected,
                               String message, SourceVersion version) {
         if (result != expected) {
             throw new RuntimeException("Unexpected " + message +  "-ness of _ on " + version);
         }