tests: Add avm2/edittext_missing_font test

This test verifies how FP behaves when we want to get some metrics
related to text that uses a font which is missing.

Author: kjarosh

tests/tests/swfs/avm2/edittext_missing_font/Test.as

@@ -0,0 +1,54 @@
+package {
+import flash.display.Sprite;
+import flash.text.TextField;
+import flash.text.TextFormat;
+
+[SWF(width="200", height="200")]
+public class Test extends Sprite {
+    private var nextY: int = 0;
+    private var nextX: int = 0;
+
+    public function Test() {
+        stage.scaleMode = "noScale";
+
+        newTextField(true, "input");
+        newTextField(true, "dynamic");
+        newTextField(false, "input");
+        newTextField(false, "dynamic");
+    }
+
+    private function newTextField(device: Boolean, type: String):void {
+        var text = new TextField();
+        text.type = type;
+        text.border = true;
+        text.x = nextX;
+        text.y = nextY;
+        nextY += 42;
+        text.width = 100;
+        text.height = 40;
+        text.embedFonts = !device;
+        var tf = new TextFormat();
+        tf.font = "Unknown Font 6ad5511bcd8b089c25e2212243c819d1";
+        tf.size = 20;
+        tf.leading = 5;
+        text.defaultTextFormat = tf;
+        text.text = "xyz";
+        addChild(text);
+
+        trace("device=" + device + ", type=" + type);
+        trace("  getTextFormat(0, 1).font=" + (text.getTextFormat(0, 1).font));
+        trace("  length=" + text.length);
+        trace("  text=" + text.text);
+        trace("  numLines=" + text.numLines);
+        trace("  textWidth is zero?=" + (text.textWidth == 0));
+        trace("  getCharBoundaries(0) is null?=" + (text.getCharBoundaries(0) == null));
+        trace("  getCharBoundaries(1) is null?=" + (text.getCharBoundaries(1) == null));
+        trace("  getCharBoundaries(3) is null?=" + (text.getCharBoundaries(3) == null));
+        trace("  getLineMetrics(0).ascent is zero?=" + (text.getLineMetrics(0).ascent == 0));
+        trace("  getLineMetrics(0).descent is zero?=" + (text.getLineMetrics(0).descent == 0));
+        trace("  getLineMetrics(0).height is 5?=" + (text.getLineMetrics(0).height == 5));
+        trace("  getLineMetrics(0).leading=" + (text.getLineMetrics(0).leading));
+        trace("  getLineMetrics(0).width is zero?=" + (text.getLineMetrics(0).width == 0));
+    }
+}
+}

tests/tests/swfs/avm2/edittext_missing_font/output.txt

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+device=true, type=input
+  getTextFormat(0, 1).font=Unknown Font 6ad5511bcd8b089c25e2212243c819d1
+  length=3
+  text=xyz
+  numLines=1
+  textWidth is zero?=false
+  getCharBoundaries(0) is null?=false
+  getCharBoundaries(1) is null?=false
+  getCharBoundaries(3) is null?=true
+  getLineMetrics(0).ascent is zero?=false
+  getLineMetrics(0).descent is zero?=false
+  getLineMetrics(0).height is 5?=false
+  getLineMetrics(0).leading=5
+  getLineMetrics(0).width is zero?=false
+device=true, type=dynamic
+  getTextFormat(0, 1).font=Unknown Font 6ad5511bcd8b089c25e2212243c819d1
+  length=3
+  text=xyz
+  numLines=1
+  textWidth is zero?=false
+  getCharBoundaries(0) is null?=false
+  getCharBoundaries(1) is null?=false
+  getCharBoundaries(3) is null?=true
+  getLineMetrics(0).ascent is zero?=false
+  getLineMetrics(0).descent is zero?=false
+  getLineMetrics(0).height is 5?=false
+  getLineMetrics(0).leading=5
+  getLineMetrics(0).width is zero?=false
+device=false, type=input
+  getTextFormat(0, 1).font=Unknown Font 6ad5511bcd8b089c25e2212243c819d1
+  length=3
+  text=xyz
+  numLines=1
+  textWidth is zero?=true
+  getCharBoundaries(0) is null?=true
+  getCharBoundaries(1) is null?=true
+  getCharBoundaries(3) is null?=true
+  getLineMetrics(0).ascent is zero?=true
+  getLineMetrics(0).descent is zero?=true
+  getLineMetrics(0).height is 5?=true
+  getLineMetrics(0).leading=5
+  getLineMetrics(0).width is zero?=true
+device=false, type=dynamic
+  getTextFormat(0, 1).font=Unknown Font 6ad5511bcd8b089c25e2212243c819d1
+  length=3
+  text=xyz
+  numLines=1
+  textWidth is zero?=true
+  getCharBoundaries(0) is null?=true
+  getCharBoundaries(1) is null?=true
+  getCharBoundaries(3) is null?=true
+  getLineMetrics(0).ascent is zero?=true
+  getLineMetrics(0).descent is zero?=true
+  getLineMetrics(0).height is 5?=true
+  getLineMetrics(0).leading=5
+  getLineMetrics(0).width is zero?=true

tests/tests/swfs/avm2/edittext_missing_font/test.swf

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+num_ticks = 1