data: error for java import not found

* added recording an error in this case.
* added test for this case.

java_indexer/src/io/coati/JavaAstVisitor.java

@@ -401,6 +401,13 @@ public class JavaAstVisitor extends JavaAstVisitorAdapter
 						);
 					}
 				}
+				else
+				{
+					JavaIndexer.recordError(
+						m_callbackId, "Import not found.", true, true, 
+						nameExpr.getBeginLine(), nameExpr.getBeginColumn(), nameExpr.getEndLine(), nameExpr.getEndColumn()
+					);
+				}
 			}
 			catch (Exception e)
 			{

src/test/JavaParserTestSuite.h

@@ -314,6 +314,16 @@ public:
 		TS_ASSERT_EQUALS(client->errors[0], "Encountered unexpected token. <1:1 1:7>");
 	}
 
+	void test_java_parser_finds_missing_import_as_error()
+	{
+		std::shared_ptr<TestParserClient> client = parseCode(
+			"import foo;\n"
+		);
+
+		TS_ASSERT_EQUALS(client->errors.size(), 1);
+		TS_ASSERT_EQUALS(client->errors[0], "Import not found. <1:8 1:10>");
+	}
+