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Tests: Add test for String::find with empty needle

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This adds a test case for String::find and String::find_all with empty
needles. The expected behavior is in line with what the C++ standard
library (and other languages standard libraries) expect.
This commit is contained in:
Max Wipfli 2021-07-01 20:00:07 +02:00 committed by Andreas Kling
parent 9cc35d1ba3
commit 4b87dd5c5c
Notes: sideshowbarker 2024-07-18 11:05:57 +09:00 
Author: https://github.com/MaxWipfli
Commit: https://github.com/SerenityOS/serenity/commit/4b87dd5c5c2
Pull-request: https://github.com/SerenityOS/serenity/pull/8368
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/trflynn89
1 changed files with 11 additions and 0 deletions
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11
Tests/AK/TestString.cpp
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@ -271,3 +271,14 @@ TEST_CASE(find)
EXPECT_EQ(a.find('b', 4), Optional<size_t> { 6 });
EXPECT_EQ(a.find('b', 9), Optional<size_t> {});
}
TEST_CASE(find_with_empty_needle)
{
String string = "";
EXPECT_EQ(string.find(""sv), 0u);
EXPECT_EQ(string.find_all(""sv), (Vector<size_t> { 0u }));
string = "abc";
EXPECT_EQ(string.find(""sv), 0u);
EXPECT_EQ(string.find_all(""sv), (Vector<size_t> { 0u, 1u, 2u, 3u }));
}