Add Unit Tests

.gitignore

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+.DS_Store
+vendor

bin/install-wp-tests.sh

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+#!/usr/bin/env bash
+
+# Keep files in a plugin-specific directory to not step over other plugin tests
+TMP_DIR="/tmp/datafeedr-product-sets"
+
+if [ -d "$TMP_DIR" ]; then
+  echo "Temporary directory exists."
+else
+  mkdir $TMP_DIR
+fi
+
+DB_NAME=${1-datafeedr}
+DB_USER=${2-root}
+DB_PASS=${3-root}
+DB_HOST=${4-localhost}
+WP_VERSION=${5-latest}
+SKIP_DB_CREATE=${6-false}
+WP_TESTS_DIR=${WP_TESTS_DIR-$TMP_DIR/wordpress-tests-lib/}
+WP_CORE_DIR=${WP_CORE_DIR-$TMP_DIR/wordpress/}
+
+download() {
+    if [ `which curl` ]; then
+        curl -s "$1" > "$2";
+    elif [ `which wget` ]; then
+        wget -nv -O "$2" "$1"
+    fi
+}
+
+if [[ $WP_VERSION =~ [0-9]+\.[0-9]+(\.[0-9]+)? ]]; then
+	WP_TESTS_TAG="tags/$WP_VERSION"
+elif [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+	WP_TESTS_TAG="trunk"
+else
+	# http serves a single offer, whereas https serves multiple. we only want one
+	download http://api.wordpress.org/core/version-check/1.7/ $TMP_DIR/wp-latest.json
+	grep '[0-9]+\.[0-9]+(\.[0-9]+)?' $TMP_DIR/wp-latest.json
+	LATEST_VERSION=$(grep -o '"version":"[^"]*' $TMP_DIR/wp-latest.json | sed 's/"version":"//')
+	if [[ -z "$LATEST_VERSION" ]]; then
+		echo "Latest WordPress version could not be found"
+		exit 1
+	fi
+	WP_TESTS_TAG="tags/$LATEST_VERSION"
+fi
+
+echo "VARIABLES:"
+echo "TMP_DIR= $TMP_DIR"
+echo "DB_NAME= $DB_NAME"
+echo "DB_USER= $DB_USER"
+echo "DB_PASS= $DB_PASS"
+echo "DB_HOST= $DB_HOST"
+echo "WP_VERSION= $WP_VERSION"
+echo "SKIP_DB_CREATE= $SKIP_DB_CREATE"
+echo "WP_TESTS_DIR= $WP_TESTS_DIR"
+echo "WP_CORE_DIR= $WP_CORE_DIR"
+
+set -e
+
+install_wp() {
+
+	if [ -d $WP_CORE_DIR ]; then
+		return;
+	fi
+
+  set -x
+	mkdir -p $WP_CORE_DIR
+
+	if [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+		mkdir -p $TMP_DIR/wordpress-nightly
+		download https://wordpress.org/nightly-builds/wordpress-latest.zip  $TMP_DIR/wordpress-nightly/wordpress-nightly.zip
+		unzip -q $TMP_DIR/wordpress-nightly/wordpress-nightly.zip -d$TMP_DIR/wordpress-nightly/
+		mv $TMP_DIR/wordpress-nightly/wordpress/* $WP_CORE_DIR
+	else
+		if [ $WP_VERSION == 'latest' ]; then
+			local ARCHIVE_NAME='latest'
+		else
+			local ARCHIVE_NAME="wordpress-$WP_VERSION"
+		fi
+		download https://wordpress.org/${ARCHIVE_NAME}.tar.gz  $TMP_DIR/wordpress.tar.gz
+		tar --strip-components=1 -zxmf $TMP_DIR/wordpress.tar.gz -C $WP_CORE_DIR
+	fi
+
+	download https://raw.github.com/markoheijnen/wp-mysqli/master/db.php $WP_CORE_DIR/wp-content/db.php
+  set +x
+}
+
+install_test_suite() {
+
+  set -x
+
+	# portable in-place argument for both GNU sed and Mac OSX sed
+	if [[ $(uname -s) == 'Darwin' ]]; then
+		local ioption='-i .bak'
+	else
+		local ioption='-i'
+	fi
+
+	# set up testing suite if it doesn't yet exist
+	if [ ! -d $WP_TESTS_DIR ]; then
+		# set up testing suite
+		mkdir -p $WP_TESTS_DIR
+		svn co --quiet https://develop.svn.wordpress.org/${WP_TESTS_TAG}/tests/phpunit/includes/ $WP_TESTS_DIR/includes
+		svn co --quiet https://develop.svn.wordpress.org/${WP_TESTS_TAG}/tests/phpunit/data/ $WP_TESTS_DIR/data
+	fi
+
+	if [ ! -f wp-tests-config.php ]; then
+		download https://develop.svn.wordpress.org/${WP_TESTS_TAG}/wp-tests-config-sample.php "$WP_TESTS_DIR"/wp-tests-config.php
+		# remove all forward slashes in the end
+		WP_CORE_DIR=$(echo $WP_CORE_DIR | sed "s:/\+$::")
+		sed $ioption "s:dirname( __FILE__ ) . '/src/':'$WP_CORE_DIR/':" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/youremptytestdbnamehere/$DB_NAME/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/yourusernamehere/$DB_USER/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/yourpasswordhere/$DB_PASS/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s|localhost|${DB_HOST}|" "$WP_TESTS_DIR"/wp-tests-config.php
+	fi
+  set +x
+}
+
+install_db() {
+
+	if [ ${SKIP_DB_CREATE} = "true" ]; then
+		return 0
+	fi
+
+  set -x
+	# parse DB_HOST for port or socket references
+	local PARTS=(${DB_HOST//\:/ })
+	local DB_HOSTNAME=${PARTS[0]};
+	local DB_SOCK_OR_PORT=${PARTS[1]};
+	local EXTRA=""
+
+	if ! [ -z $DB_HOSTNAME ] ; then
+		if [ $(echo $DB_SOCK_OR_PORT | grep -e '^[0-9]\{1,\}$') ]; then
+			EXTRA=" --host=$DB_HOSTNAME --port=$DB_SOCK_OR_PORT --protocol=tcp"
+		elif ! [ -z $DB_SOCK_OR_PORT ] ; then
+			EXTRA=" --socket=$DB_SOCK_OR_PORT"
+		elif ! [ -z $DB_HOSTNAME ] ; then
+			EXTRA=" --host=$DB_HOSTNAME --protocol=tcp"
+		fi
+	fi
+
+	# create database
+	mysqladmin create $DB_NAME --user="$DB_USER" --password="$DB_PASS"$EXTRA
+	set +x
+}
+
+
+
+install_wp
+echo "(1/3) WordPress download complete."
+
+install_test_suite
+echo "(2/3) Test suite installed."
+
+install_db
+echo "(3/3) Database installed."

composer.json

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+{
+  "name": "datafeedr/datafeedr-product-sets",
+  "description": "Datafeedr Product Sets Plugin",
+  "type": "wordpress-plugin",
+  "version": "1.3.14",
+  "license": "GPLv3",
+  "homepage": "https://wordpress.org/plugins/datafeedr-product-sets/",
+  "require-dev": {
+    "phpunit/phpunit": "^7.5.20",
+    "yoast/phpunit-polyfills": "^1.0"
+  }
+}