1 files changed, 79 insertions, 0 deletions
diff --git a/javaparser-testing/src/test/java/com/github/javaparser/ast/validator/Java9ValidatorTest.java b/javaparser-testing/src/test/java/com/github/javaparser/ast/validator/Java9ValidatorTest.java
new file mode 100644
index 000000000..911f6a984
--- /dev/null
+++ b/javaparser-testing/src/test/java/com/github/javaparser/ast/validator/Java9ValidatorTest.java
@@ -0,0 +1,79 @@
+package com.github.javaparser.ast.validator;
+
+import com.github.javaparser.JavaParser;
+import com.github.javaparser.ParseResult;
+import com.github.javaparser.ParserConfiguration;
+import com.github.javaparser.ast.CompilationUnit;
+import com.github.javaparser.ast.stmt.Statement;
+import org.junit.Test;
+
+import static com.github.javaparser.ParseStart.COMPILATION_UNIT;
+import static com.github.javaparser.ParseStart.STATEMENT;
+import static com.github.javaparser.ParserConfiguration.LanguageLevel.*;
+import static com.github.javaparser.Providers.provider;
+import static com.github.javaparser.ast.validator.Java1_1ValidatorTest.allModifiers;
+import static com.github.javaparser.utils.TestUtils.assertNoProblems;
+import static com.github.javaparser.utils.TestUtils.assertProblems;
+
+public class Java9ValidatorTest {
+    public static final JavaParser javaParser = new JavaParser(new ParserConfiguration().setLanguageLevel(JAVA_9));
+
+    @Test
+    public void underscoreIdentifiers() {
+        ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("a.b._.c.d = act(_, _ -> _);"));
+        assertProblems(result,
+                "(line 1,col 5) '_' is a reserved keyword.",
+                "(line 1,col 17) '_' is a reserved keyword.",
+                "(line 1,col 20) '_' is a reserved keyword.",
+                "(line 1,col 25) '_' is a reserved keyword."
+        );
+    }
+
+    @Test
+    public void moduleRequires() {
+        ParseResult<CompilationUnit> result = javaParser.parse(COMPILATION_UNIT, provider("module x{requires " + allModifiers + " a;}"));
+        assertProblems(result,
+                "(line 1,col 10) Can have only one of 'public', 'protected', 'private'.",
+                "(line 1,col 10) Can have only one of 'final', 'abstract'.",
+                "(line 1,col 10) Can have only one of 'native', 'strictfp'.",
+                "(line 1,col 10) 'transient' is not allowed here.",
+                "(line 1,col 10) 'volatile' is not allowed here.",
+                "(line 1,col 10) 'final' is not allowed here.",
+                "(line 1,col 10) 'synchronized' is not allowed here.",
+                "(line 1,col 10) 'default' is not allowed here.",
+                "(line 1,col 10) 'native' is not allowed here.",
+                "(line 1,col 10) 'private' is not allowed here.",
+                "(line 1,col 10) 'protected' is not allowed here.",
+                "(line 1,col 10) 'strictfp' is not allowed here.",
+                "(line 1,col 10) 'abstract' is not allowed here.",
+                "(line 1,col 10) 'public' is not allowed here."
+        );
+    }
+
+    @Test
+    public void interfaceMethod() {
+        ParseResult<CompilationUnit> result = javaParser.parse(COMPILATION_UNIT, provider("interface X{" + allModifiers + "int x(){};}"));
+        assertProblems(result,
+                "(line 1,col 13) Can have only one of 'public', 'protected', 'private'.",
+                "(line 1,col 13) Can have only one of 'final', 'abstract'.",
+                "(line 1,col 13) Can have only one of 'native', 'strictfp'.",
+                "(line 1,col 13) Cannot be 'abstract' and also 'private', 'static', 'final', 'native', 'strictfp', 'synchronized'.",
+                "(line 1,col 13) 'transient' is not allowed here.",
+                "(line 1,col 13) 'volatile' is not allowed here.",
+                "(line 1,col 13) 'transitive' is not allowed here."
+        );
+    }
+
+    @Test
+    public void modules() {
+        ParseResult<CompilationUnit> result = javaParser.parse(COMPILATION_UNIT, provider("open module x {}"));
+        assertNoProblems(result);
+    }
+
+    @Test
+    public void tryWithResourceReference() {
+        ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try(a.b.c){}"));
+        assertNoProblems(result);
+    }
+
+}