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#include <gtest/gtest.h>
#include <pog/filter_view.h>
class TestFilterView : public ::testing::Test {};
TEST_F(TestFilterView,
EmptyContainer) {
std::vector<int> v;
FilterView fv(v.begin(), v.end(), [](int x) { return x & 1; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{}));
}
TEST_F(TestFilterView,
BasicFilter) {
std::vector<int> v = {0, 1, 2, 3, 4, 5, 6};
FilterView fv(v.begin(), v.end(), [](int x) { return x & 1; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{1, 3, 5}));
}
TEST_F(TestFilterView,
SharedEnd) {
std::vector<int> v = {0, 1, 2, 3, 4, 5};
FilterView fv(v.begin(), v.end(), [](int x) { return x & 1; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{1, 3, 5}));
}
TEST_F(TestFilterView,
SharedBegin) {
std::vector<int> v = {1, 2, 3, 4, 5, 6};
FilterView fv(v.begin(), v.end(), [](int x) { return x & 1; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{1, 3, 5}));
}
TEST_F(TestFilterView,
SharedBeginAndEnd) {
std::vector<int> v = {1, 2, 3, 4, 5};
FilterView fv(v.begin(), v.end(), [](int x) { return x & 1; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{1, 3, 5}));
}
TEST_F(TestFilterView,
NoElements) {
std::vector<int> v = {0, 1, 2, 3, 4, 5, 6};
FilterView fv(v.begin(), v.end(), [](int x) { return x > 10; });
std::vector<int> actual;
for (auto x : fv)
actual.push_back(x);
EXPECT_EQ(actual, (std::vector<int>{}));
}
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