tests: Add avm2/textformat_display test

Author: kjarosh

tests/tests/swfs/avm2/textformat_display/Test.as

@@ -0,0 +1,35 @@
+package {
+import flash.display.*;
+import flash.text.*;
+
+public class Test extends Sprite {
+    public function Test() {
+        var tf = new TextFormat();
+        trace(tf.display);
+        tf.display = "none";
+        trace(tf.display);
+        tf.display = "inline";
+        trace(tf.display);
+        tf.display = "block";
+        trace(tf.display);
+        tf.display = "unknown";
+        trace(tf.display);
+        tf.display = "inline";
+        trace(tf.display);
+
+        try {
+            tf.display = null;
+        } catch (e) {
+            trace(e.getStackTrace());
+        }
+        trace(tf.display);
+
+        try {
+            tf.display = undefined;
+        } catch (e) {
+            trace(e.getStackTrace());
+        }
+        trace(tf.display);
+    }
+}
+}

tests/tests/swfs/avm2/textformat_display/output.txt

@@ -0,0 +1,14 @@
+block
+none
+inline
+block
+null
+inline
+TypeError: Error #2007: Parameter display must be non-null.
+	at flash.text::TextFormat/set display()
+	at Test()
+inline
+TypeError: Error #2007: Parameter display must be non-null.
+	at flash.text::TextFormat/set display()
+	at Test()
+inline

tests/tests/swfs/avm2/textformat_display/test.swf

@@ -0,0 +1 @@
+num_ticks = 1