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#include "thirdparty/microtest/microtest.h"

#include "sql_asserts.h"

#include "SQLParser.h"

using namespace hsql;

TEST(SelectTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT * FROM students;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_NULL(stmt->whereClause);

ASSERT_NULL(stmt->groupBy);

delete result;

}

TEST(SelectExprTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT a, MAX(b), CUSTOM(c, F(un)) FROM students;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_NULL(stmt->whereClause);

ASSERT_NULL(stmt->groupBy);

ASSERT_EQ(stmt->selectList->size(), 3);

ASSERT(stmt->selectList->at(0)->isType(kExprColumnRef));

ASSERT_STREQ(stmt->selectList->at(0)->getName(), "a");

ASSERT(stmt->selectList->at(1)->isType(kExprFunctionRef));

ASSERT_STREQ(stmt->selectList->at(1)->getName(), "MAX");

ASSERT_NOTNULL(stmt->selectList->at(1)->exprList);

ASSERT_EQ(stmt->selectList->at(1)->exprList->size(), 1);

ASSERT(stmt->selectList->at(1)->exprList->at(0)->isType(kExprColumnRef));

ASSERT_STREQ(stmt->selectList->at(1)->exprList->at(0)->getName(), "b");

ASSERT(stmt->selectList->at(2)->isType(kExprFunctionRef));

ASSERT_STREQ(stmt->selectList->at(2)->getName(), "CUSTOM");

ASSERT_NOTNULL(stmt->selectList->at(2)->exprList);

ASSERT_EQ(stmt->selectList->at(2)->exprList->size(), 2);

ASSERT(stmt->selectList->at(2)->exprList->at(0)->isType(kExprColumnRef));

ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(0)->getName(), "c");

ASSERT(stmt->selectList->at(2)->exprList->at(1)->isType(kExprFunctionRef));

ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(1)->getName(), "F");

ASSERT_EQ(stmt->selectList->at(2)->exprList->at(1)->exprList->size(), 1);

ASSERT(stmt->selectList->at(2)->exprList->at(1)->exprList->at(0)->isType(kExprColumnRef));

ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(1)->exprList->at(0)->getName(), "un");

delete result;

}

TEST(SelectHavingTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT city, AVG(grade) AS avg_grade FROM students GROUP BY city HAVING AVG(grade) < 2.0",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_FALSE(stmt->selectDistinct);

GroupByDescription* group = stmt->groupBy;

ASSERT_NOTNULL(group);

ASSERT_EQ(group->columns->size(), 1);

ASSERT(group->having->isSimpleOp('<'));

ASSERT(group->having->expr->isType(kExprFunctionRef));

ASSERT(group->having->expr2->isType(kExprLiteralFloat));

delete result;

}

TEST(SelectDistinctTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT DISTINCT grade, city FROM students;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT(stmt->selectDistinct);

ASSERT_NULL(stmt->whereClause);

delete result;

}

TEST(SelectGroupDistinctTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT city, COUNT(name), COUNT(DISTINCT grade) FROM students GROUP BY city;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_FALSE(stmt->selectDistinct);

ASSERT_EQ(stmt->selectList->size(), 3);

ASSERT(!stmt->selectList->at(1)->distinct);

ASSERT(stmt->selectList->at(2)->distinct);

delete result;

}

TEST(OrderByTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT grade, city FROM students ORDER BY grade, city DESC;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_NULL(stmt->whereClause);

ASSERT_NOTNULL(stmt->order);

ASSERT_EQ(stmt->order->size(), 2);

ASSERT_EQ(stmt->order->at(0)->type, kOrderAsc);

ASSERT_STREQ(stmt->order->at(0)->expr->name, "grade");

ASSERT_EQ(stmt->order->at(1)->type, kOrderDesc);

ASSERT_STREQ(stmt->order->at(1)->expr->name, "city");

delete result;

}

TEST(SelectBetweenTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT grade, city FROM students WHERE grade BETWEEN 1 and c;",

kStmtSelect,

SelectStatement,

result,

stmt);

Expr* where = stmt->whereClause;

ASSERT_NOTNULL(where);

ASSERT(where->isType(kExprOperator));

ASSERT_EQ(where->opType, Expr::BETWEEN);

ASSERT_STREQ(where->expr->getName(), "grade");

ASSERT(where->expr->isType(kExprColumnRef));

ASSERT_EQ(where->exprList->size(), 2);

ASSERT(where->exprList->at(0)->isType(kExprLiteralInt));

ASSERT_EQ(where->exprList->at(0)->ival, 1);

ASSERT(where->exprList->at(1)->isType(kExprColumnRef));

ASSERT_STREQ(where->exprList->at(1)->getName(), "c");

delete result;

}

TEST(SelectConditionalSelectTest) {

TEST_PARSE_SINGLE_SQL(

"SELECT * FROM t WHERE a = (SELECT MIN(v) FROM tt) AND EXISTS (SELECT * FROM test WHERE x < a);",

kStmtSelect,

SelectStatement,

result,

stmt);

Expr* where = stmt->whereClause;

ASSERT_NOTNULL(where);

ASSERT(where->isType(kExprOperator));

ASSERT_EQ(where->opType, Expr::AND);

// a = (SELECT ...)

Expr* cond1 = where->expr;

ASSERT_NOTNULL(cond1);

ASSERT_NOTNULL(cond1->expr);

ASSERT(cond1->isSimpleOp('='));

ASSERT_STREQ(cond1->expr->getName(), "a");

ASSERT(cond1->expr->isType(kExprColumnRef));

ASSERT_NOTNULL(cond1->expr2);

ASSERT(cond1->expr2->isType(kExprSelect));

SelectStatement* select2 = cond1->expr2->select;

ASSERT_NOTNULL(select2);

ASSERT_STREQ(select2->fromTable->getName(), "tt");

// EXISTS (SELECT ...)

Expr* cond2 = where->expr2;

ASSERT_EQ(cond2->opType, Expr::EXISTS);

ASSERT_NOTNULL(cond2->select);

SelectStatement* ex_select = cond2->select;

ASSERT_STREQ(ex_select->fromTable->getName(), "test");

delete result;

}

TEST(SelectCaseWhen) {

TEST_PARSE_SINGLE_SQL(

"SELECT MAX(CASE WHEN a = 'foo' THEN x ELSE 0 END) FROM test;",

kStmtSelect,

SelectStatement,

result,

stmt);

ASSERT_EQ(stmt->selectList->size(), 1);

Expr* func = stmt->selectList->at(0);

ASSERT_NOTNULL(func);

ASSERT(func->isType(kExprFunctionRef));

ASSERT_EQ(func->exprList->size(), 1);

Expr* caseExpr = func->exprList->at(0);

ASSERT_NOTNULL(caseExpr);

ASSERT(caseExpr->isType(kExprOperator));

ASSERT_EQ(caseExpr->opType, Expr::CASE);

ASSERT(caseExpr->expr->isType(kExprOperator));

ASSERT(caseExpr->expr->isSimpleOp('='));

ASSERT_EQ(caseExpr->exprList->size(), 2);

delete result;

}