make disposable email detection case insensitive

modules/security/src/main/DisposableEmailDomain.scala

@@ -33,7 +33,7 @@ final class DisposableEmailDomain(
   }
 
   private[security] def textToDomains(text: String): List[String] =
-    text.lines.map(_.trim).filter(_.nonEmpty).toList
+    text.lines.map(_.trim.toLowerCase).filter(_.nonEmpty).toList
 
   private var failed = false
 
@@ -54,11 +54,12 @@ final class DisposableEmailDomain(
     (s: String) => matcher(s).matches
   }
 
-  def isMainstream = DisposableEmailDomain.mainstreamDomains.contains _
+  def isMainstream(domain: String) =
+    DisposableEmailDomain.mainstreamDomains contains domain.toLowerCase
 
   def apply(domain: String) =
     if (isMainstream(domain)) false
-    else matchers exists { _(domain) }
+    else matchers exists { _(domain.toLowerCase) }
 }
 
 object DisposableEmailDomain {

modules/security/src/test/DisposableEmailDomainTest.scala

@@ -14,6 +14,8 @@ class DisposableEmailDomainTest extends Specification {
       d("hotmail.com") must beFalse
       d("live.com") must beFalse
       d("docmail.cz") must beTrue
+      d("DoCmAiL.cz") must beTrue
+      d("chacuo.net") must beTrue
     }
     "suffix" in {
       d("foo.some.randomgoodemail.org") must beFalse

modules/security/src/test/Fixtures.scala

@@ -4,7 +4,7 @@ case object Fixtures {
 
   def text = """
 leeching.net
-chacuo.net
+ChaCuo.net
 027168.com
 0-mail.com
 mail1a.de