Bash script to check a Pantheon plugin's Tested Up To value against its fixture site's WordPress version and the current WordPress version.

validate-fixture-version.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

main(){
    export TERMINUS_HIDE_GIT_MODE_WARNING=1
    local DIRNAME
    DIRNAME=$(dirname "$0")

    local CURRENT_WP_VERSION
    CURRENT_WP_VERSION=$(curl -s https://api.wordpress.org/core/version-check/1.7/ | jq -r '.offers[0].current')
    echo "Current WordPress Version: ${CURRENT_WP_VERSION}"

    if [ -z "${TERMINUS_SITE}" ]; then
        echo "TERMINUS_SITE environment variable must be set"
        exit 1
    fi

    if ! terminus whoami > /dev/null; then
        if [ -z "${TERMINUS_TOKEN}" ]; then
            echo "TERMINUS_TOKEN environment variable must be set or terminus already logged in."
            exit 1
        fi
        terminus auth:login --machine-token="${TERMINUS_TOKEN}"
    fi

    # Use find to locate the file with a case-insensitive search
    README_FILE_PATH=$(find "${DIRNAME}"/.. -iname "readme.txt" -print -quit)
    if [[ -z "$README_FILE_PATH" ]]; then
        echo "readme.txt not found."
        exit 1
    fi

    local TESTED_UP_TO
    TESTED_UP_TO=$(grep -i "Tested up to:" "${README_FILE_PATH}" | tr -d '\r\n' | awk -F ': ' '{ print $2 }')
    echo "Tested Up To: ${TESTED_UP_TO}"
    local FIXTURE_VERSION
    FIXTURE_VERSION=$(terminus wp "${TERMINUS_SITE}.dev" -- core version)
    echo "Fixture Version: ${FIXTURE_VERSION}"

    local FIXTURE_VERSION_COMPARE
    FIXTURE_VERSION_COMPARE=$(php -r "exit(version_compare('${FIXTURE_VERSION}', '${CURRENT_WP_VERSION}'));")
    if [[ $FIXTURE_VERSION_COMPARE -eq -1 ]]; then
        echo "Fixture Version: ${FIXTURE_VERSION} is less than Current WordPress Version: ${CURRENT_WP_VERSION}"
        echo "Applying upstream updates on ${TERMINUS_SITE}"
        terminus upstream:updates:apply
    fi

    local WP_VERSION_COMPARE
    WP_VERSION_COMPARE=$(php -r "exit(version_compare('${TESTED_UP_TO}', '${CURRENT_WP_VERSION}'));")

    if [[ $WP_VERSION_COMPARE -eq 0 ]]; then
    	echo "Tested Up To: ${TESTED_UP_TO} matches Current WordPress Version: ${CURRENT_WP_VERSION}"
    elif [[ $WP_VERSION_COMPARE -eq 1 ]]; then
    	echo "Tested Up To: ${TESTED_UP_TO} is greater than Current WordPress Version: ${CURRENT_WP_VERSION}"
    else
    	echo "Tested Up To: ${TESTED_UP_TO} does not match Current WordPress Version: ${CURRENT_WP_VERSION}"
    	echo "Please update ${TESTED_UP_TO} to ${CURRENT_WP_VERSION}"
    	exit 1
    fi

    local VERSION_COMPARE
    VERSION_COMPARE=$(php -r "exit(version_compare('${TESTED_UP_TO}', '${FIXTURE_VERSION}'));")

    if [[ $VERSION_COMPARE -eq 0 ]]; then
    	echo "Tested Up To: ${TESTED_UP_TO} matches Fixture Version: ${FIXTURE_VERSION}"
    	exit 0
    fi

    if [[ $VERSION_COMPARE -eq -1 ]]; then
    	echo "${TESTED_UP_TO} is less than ${FIXTURE_VERSION}"
    	echo "Please update ${TESTED_UP_TO} to ${FIXTURE_VERSION}"
    	exit 1
    fi

    if [[ $VERSION_COMPARE -eq 1 ]]; then
    	echo "${FIXTURE_VERSION} is less than ${TESTED_UP_TO}"

        # Extract major and minor version numbers from the current version
        read -r CURRENT_MAJOR CURRENT_MINOR <<<$(echo "$CURRENT_WP_VERSION" | awk -F. '{print $1, $2}')

        # Predict the next major version (increment minor version by 1)
        NEXT_MAJOR_VERSION="${CURRENT_MAJOR}.$((${CURRENT_MINOR}+1))"

        # Compare TESTED_UP_TO with the predicted next major version
        if [[ "$TESTED_UP_TO" == "$NEXT_MAJOR_VERSION" ]]; then
            echo "Tested Up To: ${TESTED_UP_TO} is the next major version after the Current WordPress Version: ${CURRENT_WP_VERSION}"
            echo "Ensure you have validated that the plugin works on the next major version of WordPress or update ${TERMINUS_SITE} to a pre-release version."
        else
            echo "Tested Up To: ${TESTED_UP_TO} is not the next major version (${NEXT_MAJOR_VERSION}). This seems like an error. Please review."
            exit 1
        fi
    fi
}

main