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Tests: static vs non-static constexpr variables

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Problem:
- `static` variables consume memory and sometimes are less
  optimizable.
- `static const` variables can be `constexpr`, usually.
- `static` function-local variables require an initialization check
  every time the function is run.

Solution:
- If a global `static` variable is only used in a single function then
  move it into the function and make it non-`static` and `constexpr`.
- Make all global `static` variables `constexpr` instead of `const`.
- Change function-local `static const[expr]` variables to be just
  `constexpr`.
This commit is contained in:
Lenny Maiorani 2021-05-19 08:54:19 -06:00 • committed by Linus Groh
parent 4aaf8df865
commit 2b64d163cd
6 changed files with 23 additions and 25 deletions
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16
Tests/AK/TestTrie.cpp
View file

@ -6,15 +6,15 @@
#include <LibTest/TestCase.h>
#include <AK/StringView.h>
#include <AK/Trie.h>
TEST_CASE(normal_behaviour)
{
Trie<char, String> dictionary('/', "");
constexpr static const char* data[] { "test", "example", "foo", "foobar" };
constexpr static const size_t total_chars = 18; // root (1), 'test' (4), 'example' (7), 'foo' (3), 'foobar' (3, "foo" already stored).
for (auto& entry : data) {
StringView view { entry };
constexpr StringView data[] { "test", "example", "foo", "foobar" };
constexpr size_t total_chars = 18; // root (1), 'test' (4), 'example' (7), 'foo' (3), 'foobar' (3, "foo" already stored).
for (auto& view : data) {
auto it = view.begin();
dictionary.insert(it, view.end(), view, [](auto& parent, auto& it) -> Optional<String> { return String::formatted("{}{}", parent.metadata_value(), *it); });
}
@ -24,8 +24,7 @@ TEST_CASE(normal_behaviour)
++i;
EXPECT_EQ(i, total_chars);
for (auto& entry : data) {
StringView view { entry };
for (auto& view : data) {
auto it = view.begin();
auto& node = dictionary.traverse_until_last_accessible_node(it, view.end());
EXPECT(it.is_end());
@ -33,9 +32,8 @@ TEST_CASE(normal_behaviour)
EXPECT_EQ(view, node.metadata_value());
}
constexpr static const char* test_data_with_prefix_in_dict[] { "testx", "exampley", "fooa", "foobarb", "fox", "text" };
for (auto& entry : test_data_with_prefix_in_dict) {
StringView view { entry };
constexpr StringView test_data_with_prefix_in_dict[] { "testx", "exampley", "fooa", "foobarb", "fox", "text" };
for (auto& view : test_data_with_prefix_in_dict) {
auto it = view.begin();
auto& node = dictionary.traverse_until_last_accessible_node(it, view.end());
EXPECT(!it.is_end());