Add testcase for textfield

Change-Id: I579ab98a86e674cd1d6bd6c43c9c369259536248

tests/components/textfield.qml

@@ -0,0 +1,38 @@
+import QtQuick 2.0
+
+import org.kde.plasma.components 2.0 as PlasmaComponents
+
+import QtQuick.Controls 1.3
+
+Rectangle {
+    id: root
+    color: "white"
+    width: 800
+    height: 300
+
+    property string longText: "This is a longer sentence"
+
+    Flow {
+        anchors.fill: parent
+        anchors.margins: 20
+        spacing: 20
+
+        PlasmaComponents.TextField {
+            placeholderText: longText
+        }
+
+        PlasmaComponents.TextField {
+            text: root.longText
+        }
+
+        PlasmaComponents.TextField {
+            text: root.longText
+            clearButtonShown: true
+        }
+
+        PlasmaComponents.TextField {
+            width: 400
+            placeholderText: longText
+        }
+    }
+}