mirror of
https://salsa.debian.org/xorg-team/lib/pixman
synced 2025-09-01 18:46:11 +00:00
67769ad5bf
The code and overall method is mostly based on scaling-test. This one focuses on trying to stress as many different color formats and types of composition operations as possible. This is an initial implementation which may need more tuning. Also not all color format and operator combinations are actually used. When cpu specific optimizations are disabled, this test provides identical deterministic results on x86, PPC and ARM. Script blitters-test-bisect.rb now works in non-stop mode, until it finds any problem. This allows to run it for example overnight in order to test a lot more variants of pixman calls and increase chances of detecting problems in pixman. Just like with scaling-test, running blitters-test binary alone with no command line arguments runs a small predefined number of tests and compares checksum with a reference value for quick verification.
44 lines
1.3 KiB
Ruby
44 lines
1.3 KiB
Ruby
#!/usr/bin/env ruby
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if not ARGV[0] or not ARGV[1] then
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printf("Please provide two 'blitters-test' static binaries in the command line.\n\n")
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printf("The first should be linked with a correct reference pixman library.\n")
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printf("The second binary should be linked with a pixman library which needs to be tested.\n")
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exit(0)
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end
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def test_range(min, max)
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if `#{ARGV[0]} #{min} #{max} 2>/dev/null` == `#{ARGV[1]} #{min} #{max} 2>/dev/null` then
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return
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end
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while max != min + 1 do
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avg = ((min + max) / 2).to_i
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res1 = `#{ARGV[0]} #{min} #{avg} 2>/dev/null`
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res2 = `#{ARGV[1]} #{min} #{avg} 2>/dev/null`
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if res1 != res2 then
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max = avg
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else
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min = avg
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end
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end
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return max
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end
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base = 1
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while true do
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# run infinitely, processing 100000 test cases per iteration
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printf("running tests %d-%d\n", base, base + 100000 - 1);
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res = test_range(base, base + 100000 - 1)
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if res then
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printf("-- ref --\n")
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printf("%s\n", `#{ARGV[0]} -#{res}`)
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printf("-- new --\n")
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printf("%s\n", `#{ARGV[1]} -#{res}`)
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printf("\nFailed test %d, you can reproduce the problematic conditions by running\n", res)
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printf("#{ARGV[1]} -%d\n", res)
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exit(1)
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end
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base += 100000
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end
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