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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dap/variant.h"
#include "dap/typeof.h"
#include "dap/types.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace dap {
struct VariantTestObject {
dap::integer i;
dap::number n;
};
DAP_STRUCT_TYPEINFO(VariantTestObject,
"VariantTestObject",
DAP_FIELD(i, "i"),
DAP_FIELD(n, "n"));
} // namespace dap
TEST(Variant, EmptyConstruct) {
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject> variant;
ASSERT_TRUE(variant.is<dap::integer>());
ASSERT_FALSE(variant.is<dap::boolean>());
ASSERT_FALSE(variant.is<dap::VariantTestObject>());
}
TEST(Variant, Boolean) {
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject> variant(
dap::boolean(true));
ASSERT_TRUE(variant.is<dap::boolean>());
ASSERT_EQ(variant.get<dap::boolean>(), dap::boolean(true));
}
TEST(Variant, Integer) {
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject> variant(
dap::integer(10));
ASSERT_TRUE(variant.is<dap::integer>());
ASSERT_EQ(variant.get<dap::integer>(), dap::integer(10));
}
TEST(Variant, TestObject) {
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject> variant(
dap::VariantTestObject{5, 3.0});
ASSERT_TRUE(variant.is<dap::VariantTestObject>());
ASSERT_EQ(variant.get<dap::VariantTestObject>().i, 5);
ASSERT_EQ(variant.get<dap::VariantTestObject>().n, 3.0);
}
TEST(Variant, Assign) {
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject> variant(
dap::integer(10));
variant = dap::integer(10);
ASSERT_TRUE(variant.is<dap::integer>());
ASSERT_FALSE(variant.is<dap::boolean>());
ASSERT_FALSE(variant.is<dap::VariantTestObject>());
ASSERT_EQ(variant.get<dap::integer>(), dap::integer(10));
variant = dap::boolean(true);
ASSERT_FALSE(variant.is<dap::integer>());
ASSERT_TRUE(variant.is<dap::boolean>());
ASSERT_FALSE(variant.is<dap::VariantTestObject>());
ASSERT_EQ(variant.get<dap::boolean>(), dap::boolean(true));
variant = dap::VariantTestObject{5, 3.0};
ASSERT_FALSE(variant.is<dap::integer>());
ASSERT_FALSE(variant.is<dap::boolean>());
ASSERT_TRUE(variant.is<dap::VariantTestObject>());
ASSERT_EQ(variant.get<dap::VariantTestObject>().i, 5);
ASSERT_EQ(variant.get<dap::VariantTestObject>().n, 3.0);
}
TEST(Variant, Accepts) {
using variant =
dap::variant<dap::integer, dap::boolean, dap::VariantTestObject>;
ASSERT_TRUE(variant::accepts<dap::integer>());
ASSERT_TRUE(variant::accepts<dap::boolean>());
ASSERT_TRUE(variant::accepts<dap::VariantTestObject>());
ASSERT_FALSE(variant::accepts<dap::number>());
ASSERT_FALSE(variant::accepts<dap::string>());
}
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