diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/term.rs | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/term.rs b/src/term.rs index cac260a2..bcd78814 100644 --- a/src/term.rs +++ b/src/term.rs @@ -122,16 +122,34 @@ pub mod cell { #[cfg(test)] mod tests { use super::Color; - use std::intrinsics::discriminant_value; + use std::mem; + // Ensure memory layout is well defined so components like renderer + // can exploit it. + // + // Thankfully, everything is just a u8 for now so no endianness + // considerations are needed. #[test] - fn color_discriminant_values() { - let rgb_color = Color::Rgb(::Rgb { r: 0, g: 0, b: 0 }); + fn color_memory_layout() { + let rgb_color = Color::Rgb(::Rgb { r: 1, g: 2, b: 3 }); let ansi_color = Color::Ansi(::ansi::Color::Foreground); unsafe { - assert_eq!(discriminant_value(&rgb_color), 0); - assert_eq!(discriminant_value(&ansi_color), 1); + // Color::Rgb + // [discriminant(0), red, green ,blue] + let bytes: [u8; 4] = mem::transmute_copy(&rgb_color); + assert_eq!(bytes[0], 0); + assert_eq!(bytes[1], 1); + assert_eq!(bytes[2], 2); + assert_eq!(bytes[3], 3); + + // Color::Ansi + // [discriminant(1), ansi::Color, 0, 0] + let bytes: [u8; 4] = mem::transmute_copy(&ansi_color); + assert_eq!(bytes[0], 1); + assert_eq!(bytes[1], ::ansi::Color::Foreground as u8); + assert_eq!(bytes[2], 0); + assert_eq!(bytes[3], 0); } } } |