SnapshotTestingEnvOverlay

A drop-in replacement for swift-snapshot-testing that allows the snapshots directory to be configured via ENV variable.

This supports running on Xcode Cloud where tests don't have access to the file system, with the exception of a ci_scripts directory. By symlinking your snapshots to ci_scripts and setting an ENV variable it's possible to run snapshot tests.

SNAPSHOTTESTING_PACKAGES_PATH=/Volumes/workspace/respository/ci_scripts/snapshots

Setting this ENV var means your snapshots are found in ci_scripts/snapshots instead of the standard location relative to the test file. By not setting this variable in local development the normal snapshot location and workflow is untouched.

Example Script

This script will symlink all __Snapshots__ directories into ci_scripts/snapshots, matching the path that's constructed by SnapshotTestingEnv when with the ENV variable above.

#!/bin/sh

set -e

snapshots=ci_scripts/snapshots
search_path_from_snapshots=../..

rm -rf $snapshots
mkdir $snapshots
cd $snapshots

find $search_path_from_snapshots -type d -name "__Snapshots__" | grep -v .build | while read dir; do
    parent=$(dirname "$dir")
    parent_name=${parent##*/}
    echo $parent_name $dir
    ln -s "$dir" "$parent_name"
done

License

MIT