[cairo] [PATCH v2 2/7] test: Add script to check for redundant reference images

[Behdad Esfahbod]

Nit: Please use dashes not underscores in file names.

On 13-07-03 04:33 PM, Bryce W. Harrington wrote:
> This script requires the perceptualdiff program, which can be built as
> follows:
> 
>   cd test/pdiff && make perceptualdiff
> 
> The script's output provides a list of target-specific or
> format-specific images that are identical to their more generic
> reference files, and thus are redundant and can be safely removed from
> the archive without altering any test behaviors.
> 
> Signed-off-by: Bryce Harrington <b.harrington at samsung.com>
> ---
>  test/Makefile.am   |    1 +
>  test/check_refs.sh |   60 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 61 insertions(+)
>  create mode 100755 test/check_refs.sh
> 
> diff --git a/test/Makefile.am b/test/Makefile.am
> index d5c726a..a097409 100644
> --- a/test/Makefile.am
> +++ b/test/Makefile.am
> @@ -72,6 +72,7 @@ endif
>  test_sources += $(test)
>  
>  noinst_PROGRAMS = cairo-test-suite$(EXEEXT) # always build
> +noinst_SCRIPTS += check_refs.sh
>  
>  TESTS += cairo-test-suite$(EXEEXT)
>  
> diff --git a/test/check_refs.sh b/test/check_refs.sh
> new file mode 100755
> index 0000000..649d509
> --- /dev/null
> +++ b/test/check_refs.sh
> @@ -0,0 +1,60 @@
> +#!/bin/bash
> +
> +current_dir=$(pwd)
> +
> +# Move to the reference directory as needed
> +if [ $(basename $current_dir) != 'test' ]; then
> +    if [ -d test ]; then
> +        cd test || exit 1
> +    fi
> +fi
> +if [ $(basename $current_dir) != 'reference' ]; then
> +    if [ -d reference ]; then
> +        cd reference || exit 2
> +    fi
> +fi
> +
> +pdiff=../pdiff/perceptualdiff
> +if [ ! -e "${pdiff}" ]; then
> +    echo "Error:  requires ${pdiff} executable"
> +    exit 3
> +fi
> +
> +for file in *.ref.png; do
> +    test=$(echo $file | cut -d'.' -f1)
> +    target=$(echo $file | cut -d'.' -f2)
> +    format=$(echo $file | cut -d'.' -f3)
> +    notes=""
> +    ref=""
> +    result=""
> +
> +    if [ $target = 'base' ]; then
> +        # Ignore the base images for this script's purposes
> +        continue
> +    elif [ $target = 'ref' ]; then
> +        # This is actually the baseline reference image 
> +        continue
> +    elif [ $format = 'ref' ]; then
> +        # This is either a format-specific reference, or a target-specific/format-generic image
> +        # In either case, compare it against the generic reference image
> +        ref="$test.ref.png"
> +    else
> +        # Prefer the target-specific/format-generic reference image, if available
> +	ref="$test.$target.ref.png"
> +	if [ ! -e $ref ]; then
> +            ref="$test.$format.ref.png"
> +	fi
> +    fi
> +
> +    if [ -e $ref ]; then
> +        # Run perceptualdiff with minimum threshold
> +        pdiff_output=$($pdiff $ref $file -threshold 1)
> +        result=${pdiff_output%:*}
> +        notes=$(echo "${pdiff_output#*: }" | tail -n 1)
> +        if [ "$result" = "PASS" ] && [ "$notes" = "Images are binary identical" ]; then
> +	    printf "redundant: %s is binary identical to %s\n" $file $ref
> +            notes=""
> +        fi
> +    fi
> +
> +done
> 

-- 
behdad
http://behdad.org/