Closes #3 and add unit test.

.gitattributes

@@ -0,0 +1,3 @@
+tests/ export-ignore
+bin/ export-ignore
+.travis.yml export-ignore

.travis.yml

@@ -13,20 +13,19 @@ php:
 - '7.1'
 - '7.2'
 - '7.3'
+services: mysql
+env:
+  matrix:
+    - WP_VERSION=latest
+    - WP_VERSION=5.0
 before_script:
 - composer install
+- bash bin/install-wp-tests.sh wordpress_test root '' localhost $WP_VERSION
 script:
 - composer test
 before_deploy:
   - echo 'Making deploy packages...'
-  - rm -rfv .git
-  - rm -rfv bin
-  - rm -rfv tests
-  - rm -rfv .gitignore
-  - rm -rfv .travis.yml
-  - rm -rfv vendor
-  - rm -rfv composer.lock
-  - rm -rfv phpunit.xml.dist
+  - bash bin/cleanup.sh
   - zip -r wp-block-creator.zip ./
 deploy:
   provider: releases
@@ -38,3 +37,4 @@ deploy:
     repo: hametuha/wp-block-creator
     tags: true
     php: '7.0'
+    condition: $WP_VERSION = latest

bin/cleanup.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Remove unwanted files.
+rm -rf .git
+rm -rf .gitignore
+rm -rf .travis.yml
+rm -rf bin
+rm -rf vendor
+rm -rf tests
+rm -rf composer.lock
+rm -rf phpunit.xml.dist

bin/install-wp-tests.sh

@@ -0,0 +1,155 @@
+#!/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}
+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 [[ $WP_VERSION =~ ^[0-9]+\.[0-9]+\-(beta|RC)[0-9]+$ ]]; then
+	WP_BRANCH=${WP_VERSION%\-*}
+	WP_TESTS_TAG="branches/$WP_BRANCH"
+
+elif [[ $WP_VERSION =~ ^[0-9]+\.[0-9]+$ ]]; 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_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 $WP_TESTS_DIR
+		svn co --quiet --ignore-externals https://develop.svn.wordpress.org/${WP_TESTS_TAG}/tests/phpunit/includes/ $WP_TESTS_DIR/includes
+		svn co --quiet --ignore-externals https://develop.svn.wordpress.org/${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_test_suite
+install_db

composer.json

@@ -15,9 +15,9 @@
     "minimum-stability": "stable",
     "require": {
         "php": "^5.6|^7.0",
-        "hametuha/singleton-pattern":  "^1.0",
+        "hametuha/singleton-pattern":  "^1.1",
         "hametuha/string-utility": "^1.1",
-        "hametuha/wp-enqueue-manager": "^1.0"
+        "hametuha/wp-enqueue-manager": "^1.1"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7"
@@ -26,5 +26,10 @@
         "psr-0": {
             "Hametuha\\WpBlockCreator": "src"
         }
+    },
+    "autoload-dev": {
+        "psr-0": {
+            "Hametuha\\WpBlockCreatorTest": "tests/src"
+        }
     }
 }

src/Hametuha/WpBlockCreator/Pattern/AbstractBlock.php

@@ -141,4 +141,32 @@ protected function get_block_name() {
 	protected function is_rest() {
 		return defined( 'REST_REQUEST' ) && REST_REQUEST;
 	}
+
+	/**
+	 * Get warning comment for dynamic block.
+	 *
+	 * @param string $label Label string for comment header.
+	 * @param string $desc  Description in commnet body
+	 * @param string $icon  Default warning. Use dashicons icon name.
+	 *
+	 * @return string
+	 */
+	protected function get_placeholder_for_editor( $label = '', $desc = '', $icon = 'warning' ) {
+		$label = (string) $label;
+		$desc  = (string) $desc;
+		if ( $label ) {
+			$label = sprintf(
+				'<div class="components-placeholder__label"><span class="dashicons dashicons-%s"></span>%s</div>',
+				esc_attr( $icon ),
+				esc_html( $label )
+			);
+		}
+		if ( $desc ) {
+			$desc = sprintf(
+				'<div class="components-placeholder__fieldset"><p>%s</p></div>',
+				esc_html( $desc )
+			);
+		}
+		return sprintf( '<div class="components-placeholder">%s%s</div>', $label, $desc );
+	}
 }

tests/bootstrap.php

@@ -1,3 +1,26 @@
 <?php
-// Include autoloader.
-require_once dirname( __DIR__ ) . '/vendor/autoload.php';
+/**
+ * PHPUnit bootstrap file
+ *
+ * @package wp-block-creator
+ */
+
+$_tests_dir = getenv( 'WP_TESTS_DIR' );
+if ( ! $_tests_dir ) {
+	$_tests_dir = sys_get_temp_dir() . '/wordpress-tests';
+}
+
+// Give access to tests_add_filter() function.
+require_once $_tests_dir . '/includes/functions.php';
+
+/**
+ * Manually load the plugin being tested.
+ */
+function _manually_load_plugin() {
+	require dirname( __DIR__ ) . '/vendor/autoload.php';
+}
+
+tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );
+
+// Start up the WP testing environment.
+require $_tests_dir . '/includes/bootstrap.php';

tests/src/Hametuha/WpBlockCreatorTest/ConditionalMethodBlock.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Hametuha\WpBlockCreatorTest;
+
+
+use Hametuha\WpBlockCreator\Pattern\AbstractBlock;
+
+class ConditionalMethodBlock extends AbstractBlock {
+
+	protected function get_script() {
+		return '';
+	}
+
+	public function test_is_rest() {
+		return $this->is_rest();
+	}
+
+	public function test_placeholder( $label, $desc ) {
+		return $this->get_placeholder_for_editor( $label, $desc );
+	}
+}

tests/test-protected.php

@@ -0,0 +1,29 @@
+<?php
+
+class WpBlockCreatorProtectedTest extends WP_UnitTestCase {
+
+	/**
+	 * @var \Hametuha\WpBlockCreatorTest\ConditionalMethodBlock
+	 */
+	protected $block = null;
+
+	function setUp() {
+		$this->block = \Hametuha\WpBlockCreatorTest\ConditionalMethodBlock::get_instance();
+		parent::setUp();
+	}
+
+
+	public function test_rest() {
+		$this->assertFalse( $this->block->test_is_rest() );
+
+		$expected = <<<HTML
+			<div class="components-placeholder">
+				<div class="components-placeholder__label"><span class="dashicons dashicons-warning"></span>aaa</div>
+				<div class="components-placeholder__fieldset"><p>bbb</p></div>
+			</div>
+HTML;
+
+		$actual = $this->block->test_placeholder( 'aaa', 'bbb' );
+		$this->assertXmlStringEqualsXmlString( $expected, $actual );
+	}
+}