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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/util/arrayref.h>
using namespace vespalib;
TEST("require that default constructors create references to empty arrays") {
ArrayRef<int> array_ref;
ConstArrayRef<int> const_ref;
EXPECT_EQUAL(array_ref.size(), 0u);
EXPECT_EQUAL(array_ref.begin(), array_ref.end());
EXPECT_EQUAL(const_ref.size(), 0u);
EXPECT_EQUAL(const_ref.begin(), const_ref.end());
}
TEST("require that data can be referenced") {
std::vector<int> data({1,2,3});
ArrayRef<int> array_ref(data);
ConstArrayRef<int> const_ref(data);
EXPECT_EQUAL(array_ref.size(), 3u);
EXPECT_EQUAL(array_ref.end() - array_ref.begin(), 3);
EXPECT_EQUAL(array_ref[1], 2);
EXPECT_EQUAL(const_ref.size(), 3u);
EXPECT_EQUAL(const_ref.end() - const_ref.begin(), 3);
EXPECT_EQUAL(const_ref[2], 3);
}
TEST("require that non-const array ref can be written to") {
std::vector<int> data({1,2,3});
ArrayRef<int> array_ref(data);
array_ref[1] = 5;
EXPECT_EQUAL(data[1], 5);
}
TEST("require that references can be constified") {
std::vector<int> data({1,2,3});
const ArrayRef<int> array_ref(data);
ConstArrayRef<int> const_ref(array_ref);
EXPECT_EQUAL(const_ref.size(), 3u);
EXPECT_EQUAL(const_ref.end() - const_ref.begin(), 3);
EXPECT_EQUAL(const_ref[2], 3);
}
TEST("require that references can be unconstified") {
std::vector<int> data({1,2,3});
const ConstArrayRef<int> const_ref(data);
ArrayRef<int> array_ref = unconstify(const_ref);
EXPECT_EQUAL(array_ref.size(), 3u);
EXPECT_EQUAL(array_ref.end() - array_ref.begin(), 3);
EXPECT_EQUAL(array_ref[1], 2);
array_ref[1] = 5;
EXPECT_EQUAL(data[1], 5);
}
TEST("require that std::array references can be constified") {
std::array<int,3> data({1,2,3});
const ArrayRef<int> array_ref(data);
ConstArrayRef<int> const_ref(array_ref);
EXPECT_EQUAL(const_ref.size(), 3u);
EXPECT_EQUAL(const_ref.end() - const_ref.begin(), 3);
EXPECT_EQUAL(const_ref[2], 3);
}
TEST("require that references can be unconstified") {
std::array<int, 3> data({1,2,3});
const ConstArrayRef<int> const_ref(data);
ArrayRef<int> array_ref = unconstify(const_ref);
EXPECT_EQUAL(array_ref.size(), 3u);
EXPECT_EQUAL(array_ref.end() - array_ref.begin(), 3);
EXPECT_EQUAL(array_ref[1], 2);
array_ref[1] = 5;
EXPECT_EQUAL(data[1], 5);
}
TEST_MAIN() { TEST_RUN_ALL(); }
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