Add JavaScript test for constants in Consts.cpp.

testing/resources/javascript/consts.pdf

Index: testing/resources/javascript/consts.pdf
diff --git a/testing/resources/javascript/consts.pdf b/testing/resources/javascript/consts.pdf
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+function doTest(name, props) {
+  for (var i = 0; i < props.length; ++i) {
+    var expr = name + "." + props[i];
+    app.alert(expr + " is " + eval(expr));
+  }
+}
+
+try {
+  doTest("border", ["s", "b", "d", "i", "u", "nonesuch"]);
+  doTest("display", ["visible", "hidden", "noPrint", "noView", "nonesuch"]);
+  doTest("font", ["Times", "TimesB", "TimesI", "TimesBI", "Helv", "HelvB",
+                  "HelvI", "HelvBI", "Cour", "CourB", "CourI", "CourBI",
+                  "Symbol", "ZapfD", "Nonesuch"]);
+
+  doTest("highlight", ["n", "i", "p", "o", "nonesuch"]);
+  doTest("position", ["textOnly", "iconOnly", "iconTextV", "textIconV",
+                      "iconTextH", "textIconH", "overlay", "nonesuch"]);
+
+  doTest("scaleHow", ["proportional", "anamorphic", "nonesuch"]);
+  doTest("scaleWhen", ["always", "never", "tooBig", "tooSmall", "nonesuch"]);
+  doTest("style", ["ch", "cr", "di", "ci", "st", "sq", "nonesuch"]);
+  doTest("zoomtype", ["none", "fitP", "fitW", "fitH", "fitV", "pref", "refW",
+                      "nonesuch"]);
+} catch (e) {
+  app.alert("ERROR: " + e.toString());
+}
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