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AK: Define HashMap::take to find and remove a value from the map

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Timothy Flynn 2023-02-02 10:55:50 -05:00 • committed by Linus Groh
parent f31bd190b0
commit 2af7447dfd
2 changed files with 57 additions and 0 deletions
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32
Tests/AK/TestHashMap.cpp
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@ -9,6 +9,7 @@
#include <AK/DeprecatedString.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <AK/String.h>
TEST_CASE(construct)
{
@ -219,3 +220,34 @@ TEST_CASE(in_place_rehashing_ordered_loop_bug)
map.set("yt.innertube::nextId", "");
VERIFY(map.keys().size() == 2);
}
TEST_CASE(take)
{
HashMap<String, int> map;
EXPECT(!map.take("foo"sv).has_value());
EXPECT(!map.take("bar"sv).has_value());
EXPECT(!map.take(String::from_utf8_short_string("baz"sv)).has_value());
map.set(String::from_utf8_short_string("foo"sv), 1);
map.set(String::from_utf8_short_string("bar"sv), 2);
map.set(String::from_utf8_short_string("baz"sv), 3);
auto foo = map.take("foo"sv);
EXPECT_EQ(foo, 1);
foo = map.take("foo"sv);
EXPECT(!foo.has_value());
auto bar = map.take("bar"sv);
EXPECT_EQ(bar, 2);
bar = map.take("bar"sv);
EXPECT(!bar.has_value());
auto baz = map.take(String::from_utf8_short_string("baz"sv));
EXPECT_EQ(baz, 3);
baz = map.take(String::from_utf8_short_string("baz"sv));
EXPECT(!baz.has_value());
}