/series/import/request: increase max length of a URL to 285.

While 255 characters should be enough for a URL, if it contains
non-ASCII symbols, it gets encoded and the result is greater than 255
characters. To handle this case, I increased the max length of a URL.

See: https://en.wikipedia.org/wiki/Percent-encoding

Author: php-coder

src/main/java/ru/mystamps/web/Db.java

@@ -41,7 +41,7 @@ public static final class Series {
 	}
 
 	public static final class SeriesImportRequest {
-		public static final int URL_LENGTH = 255;
+		public static final int URL_LENGTH = 285;
 	}
 
 	public static final class SuspiciousActivity {

src/main/resources/liquibase/version/0.4.xml

@@ -33,5 +33,6 @@
 	<include file="0.4/2017-10-31--series_sales_null_second_currency.xml" relativeToChangelogFile="true" />
 	<include file="0.4/2017-10-31--non_nullable_catalog_codes.xml" relativeToChangelogFile="true" />
 	<include file="0.4/2017-11-08--import_series.xml" relativeToChangelogFile="true" />
+	<include file="0.4/2017-11-09--series_import_requests_url_length.xml" relativeToChangelogFile="true" />
 
 </databaseChangeLog>

src/main/resources/liquibase/version/0.4/2017-11-09--series_import_requests_url_length.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+		xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+		http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.0.xsd">
+	
+	<changeSet id="modify-series_import_requests-charset" author="php-coder" context="scheme" dbms="mysql">
+		<!--
+			Fix for "liquibase.exception.DatabaseException:
+			Specified key was too long; max key length is 767 bytes
+			[Failed SQL: ALTER TABLE mystamps.series_import_requests MODIFY url VARCHAR(285)]".
+			See also: https://stackoverflow.com/questions/1814532/1071-specified-key-was-too-long-max-key-length-is-767-bytes
+		-->
+		<comment>
+			Change character set from utf8 to ascii for a URL field to be able to have a unique
+			constraint on a field that has length greater than 255 characters.
+		</comment>
+
+		<sql>
+			ALTER TABLE series_import_requests DEFAULT CHARACTER SET ascii
+		</sql>
+
+	</changeSet>
+	
+	<changeSet id="modify-series_import_requests-url-field" author="php-coder" context="scheme">
+		<modifyDataType tableName="series_import_requests" columnName="url" newDataType="VARCHAR(285)" />
+	</changeSet>
+	
+</databaseChangeLog>

src/test/robotframework/series/import/validation.robot

@@ -15,9 +15,9 @@ Submit request with blank required field
 Submit request with too long url
 	[Documentation]         Verify validation of too long url
 	${letter}=              Set Variable  j
-	Input Text              id=url  http://${letter * 255}
+	Input Text              id=url  http://${letter * 285}
 	Submit Form             id=import-series-form
-	Element Text Should Be  id=url.errors  Value is greater than allowable maximum of 255 characters
+	Element Text Should Be  id=url.errors  Value is greater than allowable maximum of 285 characters
 
 Submit request with invalid url
 	[Documentation]         Verify validation of invalid url