ci: add unit tests and code coverage via Travis

Resolves #220.

.distignore

@@ -1,6 +1,7 @@
 .git
 assets/src
 bin
+codecove.yml
 node_modules
 tests
 .editorconfig

.travis.yml

@@ -1,6 +1,7 @@
 dist: bionic
 language: php
 sudo: false
+
 notifications:
   email:
     on_success: never
@@ -37,15 +38,18 @@ install:
 script:
 - npm run install-build-tools
 - npm run test
-- npm run rmdist
+- if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.3" ]]; then composer require pcov/clobber; vendor/bin/pcov clobber; vendor/bin/phpunit --configuration phpunit.xml --coverage-clover coverage.xml; fi
-- npm run "build:production"
+- if [[ ${TRAVIS_PHP_VERSION:0:3} != "7.3" ]]; then vendor/bin/phpunit --configuration phpunit.xml; fi
-- composer test
+- composer standards
+after_success:
+- bash <(curl -s https://codecov.io/bash)
 before_deploy:
 - export TRAVIS_PROJECT_SLUG="$(basename $TRAVIS_BUILD_DIR)"
 - curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
 - chmod +x wp-cli.phar
 - sudo mv wp-cli.phar /usr/local/bin/wp
 - wp package install wp-cli/dist-archive-command
+- npm run build:production
 - composer install --no-dev --optimize-autoloader
 - cd ../
 - wp dist-archive $TRAVIS_PROJECT_SLUG $TRAVIS_BUILD_DIR/$TRAVIS_PROJECT_SLUG-$TRAVIS_TAG.zip

bin/install-wp-tests.sh

@@ -0,0 +1,163 @@
+#!/usr/bin/env bash
+
+if [ $# -lt 3 ]; then
+	echo "usage: $0 <db-name> <db-user> <db-pass> [db-host] [wp-version] [skip-database-creation]"
+	exit 1
+fi
+
+DB_NAME=$1
+DB_USER=$2
+DB_PASS=$3
+DB_HOST=${4-localhost}
+WP_VERSION=${5-latest}
+SKIP_DB_CREATE=${6-false}
+
+TMPDIR=${TMPDIR-/tmp}
+TMPDIR=$(echo $TMPDIR | sed -e "s/\/$//")
+WP_TESTS_DIR=${WP_TESTS_DIR-$TMPDIR/wordpress-tests-lib}
+WP_CORE_DIR=${WP_CORE_DIR-$TMPDIR/wordpress/}
+
+download() {
+    if [ `which curl` ]; then
+        curl -s "$1" > "$2";
+    elif [ `which wget` ]; then
+        wget -nv -O "$2" "$1"
+    fi
+}
+
+if [[ $WP_VERSION =~ ^[0-9]+\.[0-9]+$ ]]; then
+	WP_TESTS_TAG="branches/$WP_VERSION"
+elif [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0-9]+ ]]; then
+	if [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0] ]]; then
+		# version x.x.0 means the first release of the major version, so strip off the .0 and download version x.x
+		WP_TESTS_TAG="tags/${WP_VERSION%??}"
+	else
+		WP_TESTS_TAG="tags/$WP_VERSION"
+	fi
+elif [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+	WP_TESTS_TAG="trunk"
+else
+	# http serves a single offer, whereas https serves multiple. we only want one
+	download http://api.wordpress.org/core/version-check/1.7/ /tmp/wp-latest.json
+	grep '[0-9]+\.[0-9]+(\.[0-9]+)?' /tmp/wp-latest.json
+	LATEST_VERSION=$(grep -o '"version":"[^"]*' /tmp/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
+
+set -ex
+
+install_wp() {
+
+	if [ -d $WP_CORE_DIR ]; then
+		return;
+	fi
+
+	mkdir -p $WP_CORE_DIR
+
+	if [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+		mkdir -p $TMPDIR/wordpress-nightly
+		download https://wordpress.org/nightly-builds/wordpress-latest.zip  $TMPDIR/wordpress-nightly/wordpress-nightly.zip
+		unzip -q $TMPDIR/wordpress-nightly/wordpress-nightly.zip -d $TMPDIR/wordpress-nightly/
+		mv $TMPDIR/wordpress-nightly/wordpress/* $WP_CORE_DIR
+	else
+		if [ $WP_VERSION == 'latest' ]; then
+			local ARCHIVE_NAME='latest'
+		elif [[ $WP_VERSION =~ [0-9]+\.[0-9]+ ]]; then
+			# https serves multiple offers, whereas http serves single.
+			download https://api.wordpress.org/core/version-check/1.7/ $TMPDIR/wp-latest.json
+			if [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0] ]]; then
+				# version x.x.0 means the first release of the major version, so strip off the .0 and download version x.x
+				LATEST_VERSION=${WP_VERSION%??}
+			else
+				# otherwise, scan the releases and get the most up to date minor version of the major release
+				local VERSION_ESCAPED=`echo $WP_VERSION | sed 's/\./\\\\./g'`
+				LATEST_VERSION=$(grep -o '"version":"'$VERSION_ESCAPED'[^"]*' $TMPDIR/wp-latest.json | sed 's/"version":"//' | head -1)
+			fi
+			if [[ -z "$LATEST_VERSION" ]]; then
+				local ARCHIVE_NAME="wordpress-$WP_VERSION"
+			else
+				local ARCHIVE_NAME="wordpress-$LATEST_VERSION"
+			fi
+		else
+			local ARCHIVE_NAME="wordpress-$WP_VERSION"
+		fi
+		download https://wordpress.org/${ARCHIVE_NAME}.tar.gz  $TMPDIR/wordpress.tar.gz
+		tar --strip-components=1 -zxmf $TMPDIR/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
+}
+
+install_pressbooks() {
+	if [ -d $WP_CORE_DIR/wp-content/plugins/pressbooks ]; then
+		cd $WP_CORE_DIR/wp-content/plugins/pressbooks && git pull
+		return;
+	fi
+
+	git clone --depth=1 https://github.com/pressbooks/pressbooks.git $WP_CORE_DIR/wp-content/plugins/pressbooks
+	cd $WP_CORE_DIR/wp-content/plugins/pressbooks && composer install --no-dev --optimize-autoloader
+}
+
+install_test_suite() {
+	# 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
+
+}
+
+install_db() {
+
+	if [ ${SKIP_DB_CREATE} = "true" ]; then
+		return 0
+	fi
+
+	# parse DB_HOST for port or socket references
+	local PARTS=(${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
+}
+
+install_wp
+install_pressbooks
+install_test_suite
+install_db

codecov.yml

@@ -0,0 +1,26 @@
+codecov:
+  notify:
+    require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+
+  status:
+    project: yes
+    patch: yes
+    changes: no
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "header, diff"
+  behavior: default
+require_changes: no

composer.json

@@ -30,12 +30,15 @@
 		"spatie/color": "^1.1"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "~6.5",
+		"phpunit/phpunit": "^7",
 		"pressbooks/coding-standards": "^1.0",
 		"wpreadme2markdown/wp2md": "^3.0"
 	},
 	"scripts": {
-		"test": ["@standards"],
+		"test": [
+      "vendor/bin/phpunit --configuration phpunit.xml --coverage-clover coverage.xml",
+      "@standards"
+    ],
 		"standards": [
 			"vendor/bin/phpcs --standard=phpcs.ruleset.xml inc partials *.php"
 		],

phpcs.xml.dist

@@ -1,60 +0,0 @@
-<?xml version="1.0"?>
-<ruleset name="WordPress Theme Coding Standards">
-	<!-- See https://github.com/squizlabs/PHP_CodeSniffer/wiki/Annotated-ruleset.xml -->
-	<!-- See https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards -->
-	<!-- See https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/wiki -->
-	<!-- See https://github.com/wimg/PHPCompatibility -->
-
-	<!-- Set a description for this ruleset. -->
-	<description>A custom set of code standard rules to check for WordPress themes.</description>
-
-	<!-- Pass some flags to PHPCS:
-		 p flag: Show progress of the run.
-		 s flag: Show sniff codes in all reports.
-		 v flag: Print verbose output.
-		 n flag: Do not print warnings.
-	-->
-	<arg value="psvn"/>
-
-	<!-- Only check the PHP, CSS and SCSS files. JS files are checked separately with JSCS and JSHint. -->
-	<arg name="extensions" value="php,css,scss/css"/>
-
-	<!-- Check all files in this directory and the directories below it. -->
-	<file>.</file>
-
-	<!-- Include the WordPress ruleset, with exclusions. -->
-	<rule ref="WordPress">
-		<exclude name="Generic.WhiteSpace.ScopeIndent.IncorrectExact" />
-		<exclude name="Generic.WhiteSpace.ScopeIndent.Incorrect" />
-		<exclude name="PEAR.Functions.FunctionCallSignature.Indent" />
-	</rule>
-
-	<!-- Verify that the text_domain is set to the desired text-domain.
-		 Multiple valid text domains can be provided as a comma-delimited list. -->
-	<rule ref="WordPress.WP.I18n">
-		<properties>
-			<property name="text_domain" type="array" value="_s" />
-		</properties>
-	</rule>
-
-	<!-- Allow for theme specific exceptions to the file name rules based
-		 on the theme hierarchy. -->
-	<rule ref="WordPress.Files.FileName">
-		<properties>
-			<property name="is_theme" value="true" />
-		</properties>
-	</rule>
-
-	<!-- Verify that no WP functions are used which are deprecated or have been removed.
-		 The minimum version set here should be in line with the minimum WP version
-		 as set in the "Requires at least" tag in the readme.txt file. -->
-	<rule ref="WordPress.WP.DeprecatedFunctions">
-		<properties>
-			<property name="minimum_supported_version" value="4.0" />
-		</properties>
-	</rule>
-
-	<!-- Include sniffs for PHP cross-version compatibility. -->
-	<config name="testVersion" value="5.2-99.0"/>
-	<rule ref="PHPCompatibility"/>
-</ruleset>

phpunit.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0"?>
+<phpunit
+	bootstrap="tests/bootstrap.php"
+	backupGlobals="false"
+	colors="true"
+	convertErrorsToExceptions="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	>
+	<php>
+		<const name="WP_TESTS_MULTISITE" value="1" />
+	</php>
+	<testsuites>
+		<testsuite name="Pressbooks Aldine">
+			<directory prefix="test-" suffix=".php">./tests/</directory>
+		</testsuite>
+	</testsuites>
+	<filter>
+		<whitelist>
+			<directory suffix=".php">./inc</directory>
+		</whitelist>
+</filter>
+</phpunit>

tests/bootstrap.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * PHPUnit bootstrap file
+ *
+ * @package Pressbooks_Aldine
+ */
+
+$_tests_dir = getenv( 'WP_TESTS_DIR' );
+if ( ! $_tests_dir ) {
+	$_tests_dir = rtrim( sys_get_temp_dir(), '/\\' ) . '/wordpress-tests-lib';
+}
+
+if ( ! file_exists( $_tests_dir . '/includes/functions.php' ) ) {
+	throw new Exception( "Could not find $_tests_dir/includes/functions.php, have you run bin/install-wp-tests.sh ?" );
+}
+
+// Give access to tests_add_filter() function.
+require_once $_tests_dir . '/includes/functions.php';
+
+function _manually_load_plugin() {
+	$_pressbooks = '/tmp/wordpress/wp-content/plugins/pressbooks/pressbooks.php';
+	if ( file_exists( $_pressbooks ) ) {
+		require_once( $_pressbooks );
+	} else {
+		require_once( __DIR__ . '/../../../plugins/pressbooks/pressbooks.php' );
+	}
+}
+
+/**
+ * Registers theme
+ */
+function _register_theme() {
+
+	$theme_dir = dirname( __DIR__ );
+	$current_theme = basename( $theme_dir );
+	$theme_root = dirname( $theme_dir );
+
+	add_filter( 'theme_root', function() use ( $theme_root ) {
+		return $theme_root;
+	} );
+
+	register_theme_directory( $theme_root );
+
+	add_filter( 'pre_option_template', function() use ( $current_theme ) {
+		return $current_theme;
+	});
+	add_filter( 'pre_option_stylesheet', function() use ( $current_theme ) {
+		return $current_theme;
+	});
+}
+tests_add_filter( 'muplugins_loaded', '_register_theme' );
+tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );
+
+
+// Start up the WP testing environment.
+require $_tests_dir . '/includes/bootstrap.php';

tests/test-filters.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Class Filters
+ *
+ * @package Pressbooks_Aldine
+ */
+
+/**
+ * Filters test case.
+ */
+class FiltersTest extends WP_UnitTestCase {
+	public function test_register_query_vars() {
+		$vars = \Aldine\Helpers\register_query_vars([]);
+		$this->assertContains('license', $vars);
+		$this->assertContains('subject', $vars);
+	}
+}