Add MessageQueryTestCase that tests simple query.

Test-case defines two simple classes with parent-child relation and
UserTypes accordingly. Then some sample data is being read from text file
and query is ran against that sample data using predicate that operates
on Child class.

Signed-off-by: Grzegorz Kossakowski <grek@google.com>

2 files changed, 80 insertions, 0 deletions

diff --git a/src/test/resources/com/google/gimd/query/simpleMessage.gimd b/src/test/resources/com/google/gimd/query/simpleMessage.gimd
new file mode 100644
index 0000000..c1415b3
--- /dev/null
+++ b/src/test/resources/com/google/gimd/query/simpleMessage.gimd
@@ -0,0 +1,21 @@
+name Some name
+child <
+  name Child1
+  property1 true
+>
+child <
+  name Child2
+  property1 false
+>
+child <
+  name Child3
+  property1 true
+>
+child <
+  name Child4
+  property1 false
+>
+child <
+  name Child5
+  property1 true
+>
diff --git a/src/test/scala/com/google/gimd/query/MessageQueryTestCase.scala b/src/test/scala/com/google/gimd/query/MessageQueryTestCase.scala
new file mode 100644
index 0000000..f411008
--- /dev/null
+++ b/src/test/scala/com/google/gimd/query/MessageQueryTestCase.scala
@@ -0,0 +1,59 @@
+// Copyright (C) 2009 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gimd.query
+
+
+import org.junit.Test
+import org.junit.Assert._
+
+class MessageQueryTestCase {
+
+  case class Child(name: String, property1: Boolean)
+
+  class ChildType extends UserType[Child] {
+    def toMessageBuffer(child: Child) = (new MessageBuffer()) ++
+            List(Field("name", child.name), Field("property1", child.property1.toString))
+    def toUserType(m: Message): Child = {
+      val map = Map() ++ (m.map(_.name).toList zip m.toList)
+      new Child(map("name").asInstanceOf[StringField].value,
+        map("property1").asInstanceOf[StringField].value.toBoolean)
+    }
+  }
+
+  case class SimpleMessage(name: String, children: List[Child])
+
+  class SimpleMessageType extends UserType[SimpleMessage] {
+    def toMessageBuffer(sm: SimpleMessage) = (new MessageBuffer()) ++
+      List(Field("name", sm.name))
+    def toUserType(m: Message): SimpleMessage = {
+      val childType = new ChildType()
+      val children = Message.filterMessageFields(m.filter(_ == "child")).map(childType.toUserType(_))
+      val name = m.find(_ == "name").get.asInstanceOf[StringField].value
+      new SimpleMessage(name, children)
+    }
+    override def children = Seq(new NestedMember("child", new ChildType()))
+  }
+
+  @Test
+  def simpleQuery = {
+    import Predicate._
+    val reader = new java.io.InputStreamReader(this.getClass.getResourceAsStream("simpleMessage.gimd"))
+    val message = gimd.text.Parser.parse(reader)
+    val queryResult = MessageQuery.simpleQuery(new SimpleMessageType(), message, (child: Child) => child.property1 == true)
+    val expectedResult = List(Child("Child1", true), Child("Child3", true), Child("Child5", true))
+    assertEquals(expectedResult, queryResult)
+  }
+
+}