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Make ref tests check the pixels for differences and emit a difference file.

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This commit is contained in:
Lars Bergstrom 2014-01-23 14:38:34 -08:00
parent 6662fb0c32
commit 28fa9b0069
2 changed files with 28 additions and 8 deletions
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2
mk/check.mk
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@ -40,7 +40,7 @@ servo-test: $(DEPS_servo)
reftest: $(S)src/test/harness/reftest/reftest.rs servo
@$(call E, compile: $@)
$(Q)$(RUSTC) -o $@ $<
$(Q)$(RUSTC) -L$(B)/src/support/png/rust-png/ -o $@ $<
contenttest: $(S)src/test/harness/contenttest/contenttest.rs servo
@$(call E, compile: $@)

34
src/test/harness/reftest/reftest.rs
View file

@ -7,12 +7,14 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
extern mod std;
extern mod extra;
extern mod png;
extern mod std;
use std::io;
use std::io::{File, Reader};
use std::io::process::ExitStatus;
use std::num::abs;
use std::os;
use std::run::{Process, ProcessOptions};
use std::str;
@ -45,6 +47,7 @@ fn main() {
}
}
#[deriving(Eq)]
enum ReftestKind {
Same,
Different,
@ -131,12 +134,29 @@ fn check_reftest(reftest: Reftest) {
assert!(retval == ExitStatus(0));
// check the pngs are bit equal
let args = ~[left_filename.clone(), right_filename.clone()];
let mut process = Process::new("cmp", args, ProcessOptions::new()).unwrap();
let retval = process.finish();
let left = png::load_png(&from_str::<Path>(left_filename).unwrap()).unwrap();
let right = png::load_png(&from_str::<Path>(right_filename).unwrap()).unwrap();
match reftest.kind {
Same => assert!(retval == ExitStatus(0)),
Different => assert!(retval != ExitStatus(0)),
let pixels: ~[u8] = left.pixels.iter().zip(right.pixels.iter()).map(|(&a, &b)| {
let a_signed = a as i8;
let b_signed = b as i8;
255-abs(a_signed - b_signed) as u8
}).collect();
if pixels.iter().any(|&a| a < 255) {
let output = from_str::<Path>(format!("/tmp/servo-reftest-{:06u}-diff.png", reftest.id)).unwrap();
let img = png::Image {
width: left.width,
height: left.height,
color_type: png::RGBA8,
pixels: pixels,
};
let res = png::store_png(&img, &output);
assert!(res.is_ok());
assert!(reftest.kind == Different);
} else {
assert!(reftest.kind == Same);
}
}