145 lines
5.0 KiB
C++
145 lines
5.0 KiB
C++
#include <vector>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "query/frontend/ast/ast.hpp"
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#include "query/frontend/ast/pretty_print.hpp"
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#include "query_common.hpp"
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#include "utils/string.hpp"
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using namespace query;
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using query::test_common::ToString;
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using testing::ElementsAre;
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using testing::UnorderedElementsAre;
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namespace {
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struct ExpressionPrettyPrinterTest : public ::testing::Test {
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storage::Storage db;
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storage::Storage::Accessor storage_dba{db.Access()};
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query::DbAccessor dba{&storage_dba};
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AstStorage storage;
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};
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TEST_F(ExpressionPrettyPrinterTest, Literals) {
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// 1
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EXPECT_EQ(ToString(LITERAL(1)), "1");
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// "hello"
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EXPECT_EQ(ToString(LITERAL("hello")), "\"hello\"");
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// null
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EXPECT_EQ(ToString(LITERAL(TypedValue())), "null");
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// true
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EXPECT_EQ(ToString(LITERAL(true)), "true");
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// false
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EXPECT_EQ(ToString(LITERAL(false)), "false");
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// [1 null "hello"]
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std::vector<storage::PropertyValue> values{storage::PropertyValue(1), storage::PropertyValue(),
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storage::PropertyValue("hello")};
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EXPECT_EQ(ToString(LITERAL(storage::PropertyValue(values))), "[1, null, \"hello\"]");
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// {hello: 1, there: 2}
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std::map<std::string, storage::PropertyValue> map{{"hello", storage::PropertyValue(1)},
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{"there", storage::PropertyValue(2)}};
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EXPECT_EQ(ToString(LITERAL(storage::PropertyValue(map))), "{\"hello\": 1, \"there\": 2}");
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}
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TEST_F(ExpressionPrettyPrinterTest, Identifiers) {
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// x
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EXPECT_EQ(ToString(IDENT("x")), "(Identifier \"x\")");
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// hello_there
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EXPECT_EQ(ToString(IDENT("hello_there")), "(Identifier \"hello_there\")");
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}
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TEST_F(ExpressionPrettyPrinterTest, Reducing) {
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// all(x in list where x.prop = 42)
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auto prop = dba.NameToProperty("prop");
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EXPECT_EQ(ToString(ALL("x", LITERAL(std::vector<storage::PropertyValue>{}),
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WHERE(EQ(PROPERTY_LOOKUP("x", prop), LITERAL(42))))),
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"(All (Identifier \"x\") [] (== (PropertyLookup "
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"(Identifier \"x\") \"prop\") 42))");
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// reduce(accumulator = initial_value, variable IN list | expression)
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EXPECT_EQ(ToString(REDUCE("accumulator", IDENT("initial_value"), "variable", IDENT("list"), IDENT("expression"))),
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"(Reduce (Identifier \"accumulator\") (Identifier \"initial_value\") "
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"(Identifier \"variable\") (Identifier \"list\") (Identifier "
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"\"expression\"))");
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}
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TEST_F(ExpressionPrettyPrinterTest, UnaryOperators) {
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// not(false)
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EXPECT_EQ(ToString(NOT(LITERAL(false))), "(Not false)");
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// +1
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EXPECT_EQ(ToString(UPLUS(LITERAL(1))), "(+ 1)");
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// -1
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EXPECT_EQ(ToString(UMINUS(LITERAL(1))), "(- 1)");
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// null IS NULL
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EXPECT_EQ(ToString(IS_NULL(LITERAL(TypedValue()))), "(IsNull null)");
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}
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TEST_F(ExpressionPrettyPrinterTest, BinaryOperators) {
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// and(null, 5)
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EXPECT_EQ(ToString(AND(LITERAL(TypedValue()), LITERAL(5))), "(And null 5)");
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// or(5, {hello: "there"}["hello"])
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EXPECT_EQ(
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ToString(OR(LITERAL(5),
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PROPERTY_LOOKUP(MAP(std::make_pair(storage.GetPropertyIx("hello"), LITERAL("there"))), "hello"))),
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"(Or 5 (PropertyLookup {\"hello\": \"there\"} \"hello\"))");
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// and(coalesce(null, 1), {hello: "there"})
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EXPECT_EQ(ToString(AND(COALESCE(LITERAL(TypedValue()), LITERAL(1)),
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MAP(std::make_pair(storage.GetPropertyIx("hello"), LITERAL("there"))))),
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"(And (Coalesce [null, 1]) {\"hello\": \"there\"})");
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}
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TEST_F(ExpressionPrettyPrinterTest, Coalesce) {
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// coalesce()
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EXPECT_EQ(ToString(COALESCE()), "(Coalesce [])");
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// coalesce(null, null)
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EXPECT_EQ(ToString(COALESCE(LITERAL(TypedValue()), LITERAL(TypedValue()))), "(Coalesce [null, null])");
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// coalesce(null, 2, 3)
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EXPECT_EQ(ToString(COALESCE(LITERAL(TypedValue()), LITERAL(2), LITERAL(3))), "(Coalesce [null, 2, 3])");
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// coalesce(null, 2, assert(false), 3)
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EXPECT_EQ(ToString(COALESCE(LITERAL(TypedValue()), LITERAL(2), FN("ASSERT", LITERAL(false)), LITERAL(3))),
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"(Coalesce [null, 2, (Function \"ASSERT\" [false]), 3])");
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// coalesce(null, assert(false))
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EXPECT_EQ(ToString(COALESCE(LITERAL(TypedValue()), FN("ASSERT", LITERAL(false)))),
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"(Coalesce [null, (Function \"ASSERT\" [false])])");
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// coalesce([null, null])
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EXPECT_EQ(ToString(COALESCE(LITERAL(TypedValue(std::vector<TypedValue>{TypedValue(), TypedValue()})))),
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"(Coalesce [[null, null]])");
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}
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TEST_F(ExpressionPrettyPrinterTest, ParameterLookup) {
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// and($hello, $there)
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EXPECT_EQ(ToString(AND(PARAMETER_LOOKUP(1), PARAMETER_LOOKUP(2))), "(And (ParameterLookup 1) (ParameterLookup 2))");
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}
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TEST_F(ExpressionPrettyPrinterTest, PropertyLookup) {
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// {hello: "there"}["hello"]
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EXPECT_EQ(ToString(PROPERTY_LOOKUP(MAP(std::make_pair(storage.GetPropertyIx("hello"), LITERAL("there"))), "hello")),
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"(PropertyLookup {\"hello\": \"there\"} \"hello\")");
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}
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TEST_F(ExpressionPrettyPrinterTest, NamedExpression) {
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// n AS 1
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EXPECT_EQ(ToString(NEXPR("n", LITERAL(1))), "(NamedExpression \"n\" 1)");
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}
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} // namespace
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