Issue 5052. Analyzer should treat assert as a keyword

compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java

Index: compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java b/compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java
index d0eed60ac900cb6348c5ee21432c1491dd386629..8c6da26130eeaa7c5631dccf4d39ead78a9d8602 100644
--- a/compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java
+++ b/compiler/javatests/com/google/dart/compiler/parser/SyntaxTest.java
@@ -9,7 +9,9 @@ import com.google.dart.compiler.DartCompilerListener;
 import com.google.dart.compiler.DartSourceTest;
 import com.google.dart.compiler.ast.DartAnnotation;
 import com.google.dart.compiler.ast.DartArrayLiteral;
+import com.google.dart.compiler.ast.DartAssertStatement;
 import com.google.dart.compiler.ast.DartBinaryExpression;
+import com.google.dart.compiler.ast.DartBooleanLiteral;
 import com.google.dart.compiler.ast.DartClass;
 import com.google.dart.compiler.ast.DartComment;
 import com.google.dart.compiler.ast.DartExprStmt;
@@ -103,12 +105,28 @@ public class SyntaxTest extends AbstractParserTest {
         "}"));
   }
 
+  public void test_assertStatement() {
+    DartUnit unit = parseUnit("function.dart", Joiner.on("\n").join(
+        "main() {",
+        "  assert(true);",
+        "}"
+    ));
+    assertNotNull(unit);
+    assertEquals(1, unit.getTopLevelNodes().size());
+    DartMethodDefinition function = (DartMethodDefinition) unit.getTopLevelNodes().get(0);
+    assertNotNull(function);
+    DartStatement statement = function.getFunction().getBody().getStatements().get(0);
+    assertTrue(statement instanceof DartAssertStatement);
+    DartExpression expression = ((DartAssertStatement) statement).getCondition();
+    assertTrue(expression instanceof DartBooleanLiteral);
+  }
+  
   public void test_functionExpression_asStatement() {
     DartUnit unit = parseUnit("function.dart", Joiner.on("\n").join(
         "main() {",
         "  () {};",
         "}"
-    ));
+        ));
     assertNotNull(unit);
     assertEquals(1, unit.getTopLevelNodes().size());
     DartMethodDefinition function = (DartMethodDefinition) unit.getTopLevelNodes().get(0);