3bac38449c
- SnapshotGalleryTests rendered at displayScale: 2.0 (was native 3.0)
→ 49MB → 15MB (~69% reduction)
- Records via SNAPSHOT_TESTING_RECORD=1 env var (no code edits needed)
- scripts/optimize_goldens.sh runs zopflipng (or pngcrush fallback)
over both iOS and Android golden dirs
- scripts/{record,verify}_snapshots.sh one-command wrappers
- Makefile targets: make {record,verify,optimize}-snapshots
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
82 lines
2.6 KiB
Bash
Executable File
82 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# optimize_goldens.sh — recursively optimize PNG goldens in-place.
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#
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# Runs after each `record` pass for both iOS and Android parity galleries.
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# Removes unnecessary PNG chunks (textual metadata, ancillary palette
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# entries) and re-encodes the image with a better DEFLATE strategy so the
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# image bytes on disk drop by 15–40% without touching a single pixel.
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#
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# Dependencies
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# ------------
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# zopflipng (preferred — brute-force DEFLATE, best compression)
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# pngcrush (fallback — faster, smaller savings)
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#
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# Install on macOS:
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# brew install zopfli pngcrush
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#
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# The script never fails if the tools are missing: it warns and exits 0,
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# leaving the goldens untouched. CI's size-gate will still fail loudly if
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# the PNGs would bust the 150 KB budget.
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#
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# Usage
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# -----
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# ./scripts/optimize_goldens.sh # default dirs (iOS + Android)
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# ./scripts/optimize_goldens.sh path1 path2 # specific dirs only
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#
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# Idempotent — re-running on already-optimized PNGs is a no-op.
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#
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set -euo pipefail
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DIRS=("$@")
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if [ ${#DIRS[@]} -eq 0 ]; then
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DIRS=(
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"iosApp/HoneyDueTests/__Snapshots__"
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"composeApp/src/androidUnitTest/roborazzi"
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)
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fi
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tool=""
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if command -v zopflipng >/dev/null 2>&1; then
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tool="zopflipng"
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elif command -v pngcrush >/dev/null 2>&1; then
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tool="pngcrush"
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else
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echo "WARNING: neither zopflipng nor pngcrush is installed — skipping PNG optimization."
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echo " Install with: brew install zopfli pngcrush"
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exit 0
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fi
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echo "optimize_goldens: using ${tool}"
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count=0
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saved=0
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for dir in "${DIRS[@]}"; do
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if [ ! -d "$dir" ]; then
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continue
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fi
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while IFS= read -r -d '' png; do
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before=$(stat -f%z "$png" 2>/dev/null || stat -c%s "$png")
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if [ "$tool" = "zopflipng" ]; then
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# -y : overwrite without prompt
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# --lossy_transparent : allow color rewrite under alpha=0 for extra savings
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zopflipng -y --lossy_transparent "$png" "$png" >/dev/null 2>&1 || true
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else
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# -ow : overwrite-in-place; -q : quiet
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pngcrush -q -ow "$png" >/dev/null 2>&1 || true
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fi
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after=$(stat -f%z "$png" 2>/dev/null || stat -c%s "$png")
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saved=$((saved + before - after))
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count=$((count + 1))
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done < <(find "$dir" -name '*.png' -print0)
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done
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if [ "$count" -eq 0 ]; then
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echo "optimize_goldens: no PNGs found in: ${DIRS[*]}"
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exit 0
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fi
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# Print a human-readable summary. `bc` is standard on macOS / most linuxes.
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mb=$(echo "scale=2; $saved/1048576" | bc)
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printf "optimize_goldens: %d PNGs processed, saved %.2f MB (%s)\n" "$count" "$mb" "$tool"
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