From 9d7b414f6cbb16d87fefb96e28d4c07afde7c65b Mon Sep 17 00:00:00 2001
From: Burak Emir <emir@epfl.ch>
Date: Mon, 28 Jan 2008 22:27:56 +0000
Subject: support for <elem key={x:Option[Seq[Node]]} />,...

support for <elem key={x:Option[Seq[Node]]} />, so that Options can be used for optional attributes.
---
 src/library/scala/xml/UnprefixedAttribute.scala |  8 ++-
 test/files/jvm/xmlattr.check                    | 12 ----
 test/files/jvm/xmlattr.scala                    | 74 ++++++++++++++++---------
 3 files changed, 55 insertions(+), 39 deletions(-)

diff --git a/src/library/scala/xml/UnprefixedAttribute.scala b/src/library/scala/xml/UnprefixedAttribute.scala
index e8790620de..611eba2ac6 100644
--- a/src/library/scala/xml/UnprefixedAttribute.scala
+++ b/src/library/scala/xml/UnprefixedAttribute.scala
@@ -19,9 +19,13 @@ class UnprefixedAttribute(val key: String, val value: Seq[Node], next1: MetaData
 
   val next = if (value ne null) next1 else next1.remove(key)
 
-  /** same as this(key, Utility.parseAttributeValue(value), next) */
+  /** same as this(key, Text(value), next) */
   def this(key: String, value: String, next: MetaData) =
-    this(key, if(value ne null) Text(value) else {val z:NodeSeq=null;z}, next)
+    this(key, if (value ne null) Text(value) else {val z:NodeSeq=null;z}, next)
+
+  /** same as this(key, Text(value), next) */
+  def this(key: String, value: Option[Seq[Node]], next: MetaData) =
+    this(key, if (!value.isEmpty) value.get else {val z:NodeSeq=null;z}, next)
 
   /** returns a copy of this unprefixed attribute with the given next field*/
   def copy(next: MetaData) =
diff --git a/test/files/jvm/xmlattr.check b/test/files/jvm/xmlattr.check
index bebcb45081..e69de29bb2 100644
--- a/test/files/jvm/xmlattr.check
+++ b/test/files/jvm/xmlattr.check
@@ -1,12 +0,0 @@
-null
-true
- foo="bar"
-Some(bar)
-bar
-
-true
- 
-None
-null
-<b x="&amp;"></b>
-<b x="&amp;"></b>
diff --git a/test/files/jvm/xmlattr.scala b/test/files/jvm/xmlattr.scala
index c34f66eafc..0e519f51df 100644
--- a/test/files/jvm/xmlattr.scala
+++ b/test/files/jvm/xmlattr.scala
@@ -1,29 +1,53 @@
-import scala.xml._
-object Test extends Application {
-  {
-  var z:NodeSeq = null
-
-  Console.println(z)
-  Console.println(z==null)
-  var x = new UnprefixedAttribute("foo","bar", Null)
-  //x = new UnprefixedAttribute("foo", null:Seq[Node], x)
-  Console.println(x.toString)
-  Console.println(x.get("foo")) // Some(bar)
-  Console.println(x("foo")) // bar
-
-  val y = x.remove("foo")
-  Console.println(y.toString)
-  Console.println(y == Null) // true
-
-  x = new UnprefixedAttribute("foo", z, x)
-  Console.println(x.toString)
-  Console.println(x.get("foo")) // None
-  Console.println(x("foo")) // null
+import testing.SUnit.{Assert, TestCase, TestConsoleMain, TestSuite}
+import xml.{NodeSeq, Null, Text, UnprefixedAttribute}
+
+object Test extends TestConsoleMain {
+  def suite = new TestSuite()
+
+  object UnprefixedAttributeTest extends TestCase("UnprefixedAttribute") with Assert {
+    override def runTest {
+      var x = new UnprefixedAttribute("foo","bar", Null)
+
+      // always assertX(expected, actual)
+      assertEquals(Some(Text("bar")), x.get("foo"));
+      assertEquals(Text("bar"), x("foo"))
+      assertEquals(None, x.get("no_foo"))
+      assertEquals(null, x("no_foo"))
+
+      val y = x.remove("foo")
+      assertEquals(Null, y)
+
+      val z = new UnprefixedAttribute("foo", null:NodeSeq, x)
+      assertEquals(None, z.get("foo"))
+    }
   }
 
-  val x1 = <b x="&amp;"/>
-  val x2 = <b x={"&"}/>
-  Console.println(x1)
-  Console.println(x2)
+  object AttributeWithOptionTest extends TestCase("AttributeWithOption") with Assert {
+    override def runTest {
+      var x = new UnprefixedAttribute("foo", Some(Text("bar")), Null)
 
+      assertEquals(Some(Text("bar")), x.get("foo"));
+      assertEquals(Text("bar"), x("foo"))
+      assertEquals(None, x.get("no_foo"))
+      assertEquals(null, x("no_foo"))
+
+      val attr1 = Some(Text("foo value"))
+      val attr2 = None
+      val y = <b foo={attr1} bar={attr2} />
+      assertEquals(Some(Text("foo value")), y.attributes.get("foo"));
+      assertEquals(Text("foo value"), y.attributes("foo"))
+      assertEquals(None, y.attributes.get("bar"))
+      assertEquals(null, y.attributes("bar"))
+
+      val z = new UnprefixedAttribute("bar", None, x)
+      assertEquals(z.get("foo"), None) // None
+    }
+  }
+
+  object AttributeOutputTest extends TestCase("AttributeOutput") with Assert {
+    override def runTest {
+      assertEquals(<b x="&amp;"/>.toString, "<b x=\"&amp;\"></b>")
+      assertEquals( <b x={"&"}/>.toString,  "<b x=\"&amp;\"></b>")
+    }
+  }
 }
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