Migrate partest jvm/xmlattr.scala test to JUnit.

Author: gkossakowski

src/test/scala/scala/xml/AttributeTest.scala

@@ -0,0 +1,68 @@
+package scala.xml
+
+import org.junit.Test
+import org.junit.Ignore
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.junit.Assert.assertTrue
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertEquals
+
+class AttributeTest {
+  @Test
+  def unprefixedAttribute: Unit = {
+    val x = new UnprefixedAttribute("foo","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 y = x.remove("foo")
+    assertEquals(Null, y)
+
+    val z = new UnprefixedAttribute("foo", null:NodeSeq, x)
+    assertEquals(None, z.get("foo"))
+
+    var appended = x append x append x append x
+    var len = 0; while (appended ne Null) {
+      appended = appended.next
+      len = len + 1
+    }
+    assertEquals("removal of duplicates for unprefixed attributes in append", 1, len)
+  }
+
+  @Test
+  def attributeWithOption: Unit = {
+    val 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("foo", None, x)
+    assertEquals(None, z.get("foo"))
+  }
+
+  @Test
+  def attributeToString: Unit = {
+    val expected: String = """<b x="&amp;"/>"""
+    assertEquals(expected, (<b x="&amp;"/>).toString)
+    assertEquals(expected, (<b x={"&"}/>).toString)
+  }
+
+  @Test
+  def attributeOperator: Unit = {
+    val xml = <foo bar="apple" />
+    assertEquals("apple", xml \@ "bar")
+  }
+
+}