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Test io unexpected pointer movement

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This commit is contained in:
Feoramund
2024-08-26 00:36:00 -04:00
committed by Laytan
parent 56f232e5fc
commit 1cd5cbb0e4
1 changed files with 32 additions and 0 deletions
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32
tests/core/io/test_core_io.odin
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@@ -85,6 +85,15 @@ _test_stream :: proc(
testing.expectf(t, size_err == nil,
"Size expected no error: %v", size_err, loc = loc) or_return
// Ensure Size does not move the underlying pointer from the start.
//
// Some implementations may use seeking to determine file sizes.
if .Seek in mode_set {
pos, seek_err := io.seek(stream, 0, .Current)
testing.expectf(t, pos == 0 && seek_err == nil,
"Size+Seek Current isn't 0 after getting size: %v, %v", pos, seek_err, loc = loc) or_return
}
passed += { .Size }
}
@@ -120,6 +129,13 @@ _test_stream :: proc(
"Read_At+Size expected no error: %v", size_err, loc = loc) or_return
}
// Ensure Read_At does not move the underlying pointer from the start.
if .Seek in mode_set {
pos, seek_err := io.seek(stream, 0, .Current)
testing.expectf(t, pos == 0 && seek_err == nil,
"Read_At+Seek Current isn't 0 after reading: %v, %v", pos, seek_err, loc = loc) or_return
}
passed += { .Read_At }
}
@@ -190,6 +206,15 @@ _test_stream :: proc(
// Test Write_At.
if .Write_At in mode_set {
// Ensure Write_At does not move the underlying pointer from the start.
starting_offset : i64 = -1
if .Seek in mode_set {
pos, seek_err := io.seek(stream, 0, .Current)
testing.expectf(t, pos >= 0 && seek_err == nil,
"Write_At+Seek Current failed: %v, %v", pos, seek_err, loc = loc) or_return
starting_offset = pos
}
if size > 0 {
write_buf, write_buf_alloc_err := make([]u8, size)
testing.expectf(t, write_buf_alloc_err == nil, "allocation failed", loc = loc) or_return
@@ -231,6 +256,13 @@ _test_stream :: proc(
}
}
// Ensure Write_At does not move the underlying pointer from the start.
if starting_offset != -1 && .Seek in mode_set {
pos, seek_err := io.seek(stream, 0, .Current)
testing.expectf(t, pos == starting_offset && seek_err == nil,
"Write_At+Seek Current isn't %v after writing: %v, %v", starting_offset, pos, seek_err, loc = loc) or_return
}
passed += { .Write_At }
}