tests: Test TextField::getLineText

tests/tests/swfs/avm2/textfield_getlinetext/Test.as

@@ -0,0 +1,31 @@
+package {
+    import flash.display.Sprite;
+    import flash.text.TextField;
+    import flash.events.FocusEvent;
+
+    public class Test extends Sprite {
+        public function Test() {
+            trace("///");
+            var textField1 = new TextField();
+            textField1.text = "hello world";
+            trace(textField1.getLineText(0));
+            try {
+                trace(textField1.getLineText(1));
+            } catch (e) {
+                trace(e);
+            }
+
+            trace("///");
+            var textField2 = new TextField();
+            textField2.multiline = true;
+            textField2.text = "line 1\nline 2";
+            trace(textField2.getLineText(0));
+            trace(textField2.getLineText(1));
+
+            trace("///");
+            var textField3 = new TextField();
+            textField3.htmlText = "a <b>b</b> <i>i</i>";
+            trace(textField3.getLineText(0));
+        }
+    }
+}

tests/tests/swfs/avm2/textfield_getlinetext/output.txt

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+///
+hello world
+RangeError: Error #2006: The supplied index is out of bounds.
+///
+line 1
+line 2
+///
+a b i

tests/tests/swfs/avm2/textfield_getlinetext/test.toml

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+num_ticks = 1