add explicit test to TPC-H query properties

test/tpc_h_tests.cpp

@@ -10,6 +10,13 @@
 
 using namespace hsql;
 
+std::string readFileContents(std::string file_path) {
+  std::ifstream t(file_path.c_str());
+  std::string text((std::istreambuf_iterator<char>(t)),
+                   std::istreambuf_iterator<char>());
+  return text;
+}
+
 TEST(TPCHQueryGrammarTests) {
   std::vector<std::string> files = {
     "test/queries/tpc-h-01.sql",
@@ -28,9 +35,7 @@ TEST(TPCHQueryGrammarTests) {
 
   int testsFailed = 0;
   for (const std::string& file_path : files) {
-    std::ifstream t(file_path.c_str());
+    std::string query = readFileContents(file_path);
-    std::string query((std::istreambuf_iterator<char>(t)),
-                      std::istreambuf_iterator<char>());
 
     SQLParserResult* result = SQLParser::parseSQLString(query.c_str());
     if (!result->isValid()) {
@@ -44,3 +49,50 @@ TEST(TPCHQueryGrammarTests) {
   }
   ASSERT_EQ(testsFailed, 0);
 }
+
+TEST(TPCHQueryDetailTest) {
+  std::string query = readFileContents("test/queries/tpc-h-16-22.sql");
+
+  SQLParserResult* result = SQLParser::parseSQLString(query.c_str());
+  ASSERT(result->isValid());
+  ASSERT_EQ(result->size(), 7);
+
+  const SQLStatement* stmt20 = result->getStatement(4);
+  ASSERT_EQ(stmt20->type(), kStmtSelect);
+
+  const SelectStatement* select20 = (const SelectStatement*) stmt20;
+  ASSERT_EQ(select20->selectList->size(), 2);
+  ASSERT_STREQ(select20->selectList->at(0)->getName(), "S_NAME");
+  ASSERT_STREQ(select20->selectList->at(1)->getName(), "S_ADDRESS");
+
+  // Test WHERE Clause.
+  Expr* where = select20->whereClause;
+  ASSERT_NOTNULL(where);
+  ASSERT(where->isType(kExprOperator));
+  ASSERT_EQ(where->opType, Expr::AND);
+
+  Expr* andExpr2 = where->expr;
+  ASSERT_NOTNULL(andExpr2);
+  ASSERT(andExpr2->isType(kExprOperator));
+  ASSERT_EQ(andExpr2->opType, Expr::AND);
+
+  // Test IN expression.
+  Expr* inExpr = andExpr2->expr;
+  ASSERT_NOTNULL(inExpr);
+  ASSERT(inExpr->isType(kExprOperator));
+  ASSERT_EQ(inExpr->opType, Expr::IN);
+
+  ASSERT_STREQ(inExpr->expr->getName(), "S_SUPPKEY");
+  ASSERT_NOTNULL(inExpr->select);
+  ASSERT_EQ(inExpr->select->selectList->size(), 1);
+  ASSERT(inExpr->select->selectList->at(0)->isType(kExprColumnRef));
+  ASSERT_STREQ(inExpr->select->selectList->at(0)->getName(), "PS_SUPPKEY");
+
+  // Test ORDER BY clause.
+  ASSERT_NOTNULL(select20->order);
+  ASSERT_EQ(select20->order->size(), 1);
+  ASSERT(select20->order->at(0)->expr->isType(kExprColumnRef));
+  ASSERT_STREQ(select20->order->at(0)->expr->getName(), "S_NAME");
+
+  delete result;
+}