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test_stream: implement stream_test_seek

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This commit is contained in:
Aryadev Chavali
2026-02-06 04:54:15 +00:00
parent 5bb83cfab7
commit a7eeedf7fb
2 changed files with 87 additions and 2 deletions
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87
test/test_stream.c
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@@ -180,6 +180,8 @@ void stream_test_peek_next(void)
TEST(old_position == stream.position,
"Next on an invalid stream should not affect position (%lu -> %lu)",
old_position, stream.position);
stream_stop(&stream);
}
TEST_END();
}
@@ -187,7 +189,89 @@ void stream_test_peek_next(void)
void stream_test_seek(void)
{
TEST_START();
TODO("Not implemented");
// Seeking on invalid streams
{
stream_t stream = {0};
stream_init_file(&stream, NULL, invalid_fp);
u64 old_position = stream.position;
TEST(!stream_seek_forward(&stream, 1),
"Shouldn't be possible to seek forward on an invalid stream.");
TEST(old_position == stream.position,
"Position shouldn't be affected when seeking forward on an invalid "
"stream"
"(%lu -> %lu)",
old_position, stream.position);
TEST(!stream_seek_backward(&stream, 1),
"Shouldn't be possible to seek backward on an invalid stream.");
TEST(old_position == stream.position,
"Position shouldn't be affected when seeking backward on an invalid "
"stream (%lu -> %lu)",
old_position, stream.position);
stream_stop(&stream);
}
// Valid streams
{
stream_t stream = {0};
stream_init_file(&stream, valid_filename, valid_fp);
u64 old_position = stream.position;
TEST(stream_seek_forward(&stream, 1),
"Okay to seek forward on a valid stream.");
TEST(old_position < stream.position,
"Position should be greater than before when seeking forward on a "
"valid stream (%lu -> %lu)",
old_position, stream.position);
TEST(stream_seek_backward(&stream, 1),
"Okay to seek backward on a valid stream.");
TEST(old_position == stream.position,
"stream_seek_forward and stream_seek_backward are inverse operations");
u64 forward_offset = stream_seek_forward(&stream, ARRSIZE(words_text) * 2);
TEST(forward_offset < ARRSIZE(words_text) * 2,
"Forward seeking by offsets greater than file size clamps (%lu "
"clamps to %lu)",
ARRSIZE(words_text) * 2, forward_offset);
u64 file_size = stream_size(&stream);
u64 backward_offset = stream_seek_backward(&stream, file_size + 1);
TEST(backward_offset == file_size,
"Backward seeking by offsets greater than file size clamps (%lu "
"clamps to %lu)",
file_size + 1, backward_offset);
TEST(stream.position == 0,
"Clamped forward and clamped backward seeking "
"leads to start of stream (position=%lu)",
stream.position);
i64 r_forward_offset = (rand() % (file_size - 1)) + 1;
i64 r_backward_offset = (rand() % (file_size - 1)) + 1;
while (r_backward_offset >= r_forward_offset)
r_backward_offset = (rand() % (file_size - 1)) + 1;
TEST(stream_seek(&stream, r_forward_offset) == (u64)r_forward_offset,
"Seeking by a random positive offset (%lu) is valid",
r_forward_offset);
TEST(stream_seek(&stream, -r_backward_offset) == (u64)r_backward_offset,
"Seeking backward by a random negative offset (%lu) is valid",
r_backward_offset);
TEST(
(i64)stream.position == r_forward_offset - r_backward_offset,
"Stream position (%lu) is exactly shifted by seeking offsets described "
"above.",
stream.position);
stream_stop(&stream);
}
TEST_END();
}
void stream_test_substr(void)
@@ -220,6 +304,7 @@ MAKE_TEST_SUITE(STREAM_SUITE, "Stream Tests",
MAKE_TEST_FN(stream_test_string),
MAKE_TEST_FN(stream_test_file),
MAKE_TEST_FN(stream_test_peek_next),
MAKE_TEST_FN(stream_test_seek),
MAKE_TEST_FN(stream_test_epilogue), );
/* Copyright (C) 2026 Aryadev Chavali