Increase test coverage: Array.prototype.indexOf

Branch coverage:
Before: 22/26
After: 26/26

JerryScript-DCO-1.0-Signed-off-by: Mate Dabis mdabis@inf.u-szeged.hu

Author: matedabis

tests/jerry/array-prototype-indexof.js

@@ -86,3 +86,36 @@ try {
   assert(e.message === "foo");
   assert(e instanceof ReferenceError);
 }
+
+// Checking behavior when values are unable to find
+try{
+  var a = [undefined,undefined,undefined,undefined,undefined];
+  for(var i=0; i<a.length; i++)
+    {delete a[i];}
+  a.indexOf("bar");
+} catch (e) { }
+
+// Checking behavior when value is null
+try{
+  Array.prototype.indexOf.call(null, "asd");
+} catch (e) { }
+
+// Checking behavior when length is not a number
+try {
+  var o = {};
+  Object.defineProperty(o, 'toString', { 'get' : function () { throw new ReferenceError ("foo"); } });
+  var a = { length : o }
+  Array.prototype.indexOf.call(a, function () { })
+  assert (false);
+} catch (e) {
+  assert (e instanceof ReferenceError);
+}
+
+// checking behavior when unable to get the first element
+try {
+  var a = [0, 1, 2, 3, 4];
+  Object.defineProperty(a, '0', { 'get' : function () { throw new ReferenceError; } });
+  Array.prototype.indexOf.call(a, "bar")
+} catch (e) {
+  assert (e instanceof ReferenceError);
+}