ladybird/Tests/AK/TestMemoryStream.cpp
Ben Wiederhake 36ff6187f6 Everywhere: Change spelling of 'behaviour' to 'behavior'
"The official project language is American English […]."
5d2e915623/CONTRIBUTING.md (L30)

Here's a short statistic of the occurrences of the word "behavio(u)r":

$ git grep -IPioh 'behaviou?r' | sort | uniq -c | sort -n
      2 BEHAVIOR
     24 Behaviour
     32 behaviour
    407 Behavior
    992 behavior

Therefore, it is clear that "behaviour" (56 occurrences) should be
regarded a typo, and "behavior" (1401 occurrences) should be preferred.

Note that The occurrences in LibJS are intentionally NOT changed,
because there are taken verbatim from the specification. Hence:

$ git grep -IPioh 'behaviou?r' | sort | uniq -c | sort -n
      2 BEHAVIOR
     10 behaviour
     24 Behaviour
    407 Behavior
   1014 behavior
2023-05-07 01:05:09 +02:00

93 lines
2.5 KiB
C++

/*
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/MemoryStream.h>
#include <AK/String.h>
#include <LibTest/TestCase.h>
TEST_CASE(allocating_memory_stream_empty)
{
AllocatingMemoryStream stream;
EXPECT_EQ(stream.used_buffer_size(), 0ul);
{
Array<u8, 32> array;
auto read_bytes = MUST(stream.read_some(array));
EXPECT_EQ(read_bytes.size(), 0ul);
}
{
auto offset = MUST(stream.offset_of("test"sv.bytes()));
EXPECT(!offset.has_value());
}
}
TEST_CASE(allocating_memory_stream_offset_of)
{
AllocatingMemoryStream stream;
MUST(stream.write_until_depleted("Well Hello Friends! :^)"sv.bytes()));
{
auto offset = MUST(stream.offset_of(" "sv.bytes()));
EXPECT(offset.has_value());
EXPECT_EQ(offset.value(), 4ul);
}
{
auto offset = MUST(stream.offset_of("W"sv.bytes()));
EXPECT(offset.has_value());
EXPECT_EQ(offset.value(), 0ul);
}
{
auto offset = MUST(stream.offset_of(")"sv.bytes()));
EXPECT(offset.has_value());
EXPECT_EQ(offset.value(), 22ul);
}
{
auto offset = MUST(stream.offset_of("-"sv.bytes()));
EXPECT(!offset.has_value());
}
MUST(stream.discard(1));
{
auto offset = MUST(stream.offset_of("W"sv.bytes()));
EXPECT(!offset.has_value());
}
{
auto offset = MUST(stream.offset_of("e"sv.bytes()));
EXPECT(offset.has_value());
EXPECT_EQ(offset.value(), 0ul);
}
}
TEST_CASE(allocating_memory_stream_offset_of_oob)
{
AllocatingMemoryStream stream;
// NOTE: This test is to make sure that offset_of() doesn't read past the end of the "initialized" data.
// So we have to assume some things about the behavior of this class:
// - The chunk size is 4096 bytes.
// - A chunk is moved to the end when it's fully read from
// - A free chunk is used as-is, no new ones are allocated if one exists.
// First, fill exactly one chunk.
for (size_t i = 0; i < 256; ++i)
MUST(stream.write_until_depleted("AAAAAAAAAAAAAAAA"sv.bytes()));
// Then discard it all.
MUST(stream.discard(4096));
// Now we can write into this chunk again, knowing that it's initialized to all 'A's.
MUST(stream.write_until_depleted("Well Hello Friends! :^)"sv.bytes()));
{
auto offset = MUST(stream.offset_of("A"sv.bytes()));
EXPECT(!offset.has_value());
}
}