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#!/bin/bash
#
# Any copyright is dedicated to the Public Domain.
# http://creativecommons.org/publicdomain/zero/1.0/
#
# This is a script that I used to generate a suite of tests for the CSS
# properties "object-fit" and "object-position", using a template testcase
# file and reference case file.
#
# The reference case uses the "background-size" & "background-position"
# equivalent of the tested "object-fit" / "object-position" values.
# (One exception: since there is no "background-size" equivalent of
# "object-fit: scale-down", we add an extra CSS rule for the "scale-down"
# reference cases -- see REPLACEME_SCALE_DOWN_EXTRA_RULE below.)
FILE_PATH="./"
REFTEST_LIST_FILE="$FILE_PATH/reftest.list"
TEMPLATE_TESTCASE_FILENAME=$FILE_PATH/support/template-object-fit-test.html
TEMPLATE_REFERENCE_FILENAME=$FILE_PATH/support/template-object-fit-ref.html
imageFileFormat="svg"
# Array of image files to use for testing:
imageFileArr=("support/colors-16x8.svg"
"support/colors-8x16.svg"
"support/colors-16x8-noSize.svg"
"support/colors-8x16-noSize.svg"
"support/colors-16x8-parDefault.svg"
"support/colors-8x16-parDefault.svg")
numImageFiles=${#imageFileArr[@]}
# Array of "object-fit" values, & of corresponding "background-size" values.
# (Note: background-size has no equivalent for "object-fit: scale-down". We use
# "auto auto" here, which is equivalent *some* of the time; and for the cases
# where it's *not* equivalent, we use an extra CSS rule in the reference case.
# See REPLACEME_SCALE_DOWN_EXTRA_RULE below.)
objectFitArr=( "fill" "contain" "cover" "none" "scale-down" )
backgroundSizeEquivArr=( "100% 100%" "contain" "cover" "auto auto" "auto auto" )
numObjectFitVals=${#objectFitArr[@]}
# Array of tag-names for elements that we'd like to test:
# (Also: array of a single-letter abbreviation for each element, an array of
# the close tag for each element -- if a close tag is needed -- and an array
# indicating the attribute that each element uses to specify its image source.)
tagNameArr=( "embed" "img" "object" "video" )
tagLetterArr=( "e" "i" "o" "p" )
tagCloseTokenArr=( "" "" "</object>" "</video>" )
tagSrcAttrArr=( "src" "src" "data" "poster" )
numTags=${#tagNameArr[@]}
# FIRST: Add blank line & descriptive comment to reftest manifest:
echo "
# Tests for 'object-fit' / 'object-position' with an SVG image" \
>> $REFTEST_LIST_FILE
for ((i = 0; i < $numObjectFitVals; i++)); do
objectFit=${objectFitArr[$i]}
backgroundSizeEquiv=${backgroundSizeEquivArr[$i]}
# The reference case for "scale-down" needs an additional style rule, to
# look like "object-fit: scale-down" on small objects. (This is necessary
# because "background-size" doesn't have a value that exactly maps to
# "object-fit: scale-down".)
if [[ $objectFit == "scale-down" ]]; then
scaledownRule=".objectOuter > .small { background-size: contain; }"
scaledownSedCmd="s/REPLACEME_SCALE_DOWN_EXTRA_RULE/$scaledownRule/"
else
# (We're not testing "scale-down" in this generated file, so just delete
# the template's placeholder line for a "scale-down"-specific CSS rule.)
scaledownSedCmd="/REPLACEME_SCALE_DOWN_EXTRA_RULE/d"
fi
for ((j = 0; j < $numImageFiles; j++)); do
imageFile=${imageFileArr[$j]}
let testNum=$j+1
testNum="00$testNum" # zero-pad to 3 digits, per w3c convention
filenameStub="object-fit-$objectFit-$imageFileFormat-$testNum"
# Generate a reference case:
filenameRef="$filenameStub-ref.html"
echo Generating ${filenameRef}.
cat $TEMPLATE_REFERENCE_FILENAME \
| sed "s,REPLACEME_IMAGE_FILENAME,$imageFile," \
| sed "s/REPLACEME_BACKGROUND_SIZE_VAL/$backgroundSizeEquiv/" \
| sed "$scaledownSedCmd" \
| sed "/image-rendering:/d" \
> $FILE_PATH/$filenameRef;
# Generate a test for each of our tags:
for ((k = 0; k < $numTags; k++)); do
tagName=${tagNameArr[$k]}
tagLetter=${tagLetterArr[$k]}
tagCloseToken=${tagCloseTokenArr[$k]}
tagSrcAttr=${tagSrcAttrArr[$k]}
filenameTest="$filenameStub$tagLetter.html"
testTitle="'object-fit: $objectFit' on $tagName element, with a SVG image and with various 'object-position' values"
echo Generating ${filenameTest}.
cat $TEMPLATE_TESTCASE_FILENAME \
| sed "s,REPLACEME_IMAGE_FILENAME,$imageFile," \
| sed "s/REPLACEME_TEST_TITLE/$testTitle/" \
| sed "s,REPLACEME_REFERENCE_FILENAME,$filenameRef," \
| sed "s/REPLACEME_CONTAINER_TAG/$tagName/" \
| sed "s,REPLACEME_CONTAINER_CLOSETAG,$tagCloseToken," \
| sed "s/REPLACEME_SRC_ATTR/$tagSrcAttr/" \
| sed "s/REPLACEME_OBJECT_FIT_VAL/$objectFit/" \
| sed "/image-rendering:/d" \
> $FILE_PATH/$filenameTest
echo "== $filenameTest $filenameRef" \
>> $REFTEST_LIST_FILE
done
done
done
|
