| 1 | const builtin = @import("builtin"); |
| 2 | const std = @import("std"); |
| 3 | |
| 4 | const c = std.c; |
| 5 | const testing = std.testing; |
| 6 | |
| 7 | test "swab" { |
| 8 | if (builtin.target.cpu.arch.isMIPS64() and @sizeOf(usize) == 4) return error.SkipZigTest; // TODO |
| 9 | if (builtin.target.cpu.arch == .x86_64 and @sizeOf(usize) == 4) return error.SkipZigTest; // TODO |
| 10 | if (builtin.target.os.tag == .netbsd) return error.SkipZigTest; // TODO |
| 11 | if (builtin.target.cpu.arch.isX86() and builtin.target.os.tag == .windows and builtin.target.abi == .msvc) return error.SkipZigTest; // TODO |
| 12 | |
| 13 | var a: [4]u8 = undefined; |
| 14 | @memset(a[0..], '\x00'); |
| 15 | c.swab("abcd", &a, 4); |
| 16 | try testing.expectEqualSlices(u8, "badc", &a); |
| 17 | |
| 18 | // Partial copy |
| 19 | @memset(a[0..], '\x00'); |
| 20 | c.swab("abcd", &a, 2); |
| 21 | try testing.expectEqualSlices(u8, "ba\x00\x00", &a); |
| 22 | |
| 23 | // n < 1 |
| 24 | @memset(a[0..], '\x00'); |
| 25 | c.swab("abcd", &a, 0); |
| 26 | try testing.expectEqualSlices(u8, &.{ 0, 0, 0, 0 }, &a); |
| 27 | c.swab("abcd", &a, -1); |
| 28 | try testing.expectEqualSlices(u8, &.{ 0, 0, 0, 0 }, &a); |
| 29 | |
| 30 | // Odd n |
| 31 | @memset(a[0..], '\x00'); |
| 32 | c.swab("abcd", &a, 1); |
| 33 | try testing.expectEqualSlices(u8, &.{ 0, 0, 0, 0 }, &a); |
| 34 | c.swab("abcd", &a, 3); |
| 35 | try testing.expectEqualSlices(u8, "ba\x00\x00", &a); |
| 36 | } |