third_party/WebKit/LayoutTests/fast/text/script-tests/find-backwards.js

   1 description("Tests find going both forward and backwards in small and large documents.");
   2
   3 var selection = getSelection();
   4
   5 function testFind(subjectString, pattern, backwards)
   6 {
   7     var textNode = document.createTextNode(subjectString);
   8     document.body.appendChild(textNode);
   9     selection.removeAllRanges();
  10     if (backwards) {
  11         var afterTextNodeRange = document.createRange();
  12         afterTextNodeRange.setStartAfter(textNode);
  13         afterTextNodeRange.setEndAfter(textNode);
  14         selection.addRange(afterTextNodeRange);
  15     } else {
  16         var beforeTextNodeRange = document.createRange();
  17         beforeTextNodeRange.setStartBefore(textNode);
  18         beforeTextNodeRange.setEndBefore(textNode);
  19         selection.addRange(beforeTextNodeRange);
  20     }
  21     var result;
  22     if (!find(pattern, false, backwards))
  23         result = "not found"
  24     else if (selection.rangeCount != 1)
  25         result = "internal inconsistency";
  26     else {
  27         var resultRange = selection.getRangeAt(0);
  28         if (resultRange.startContainer !== textNode || resultRange.endContainer !== textNode)
  29             result = "not found";
  30         else
  31             result = resultRange.startOffset + ", " + resultRange.endOffset;
  32     }
  33     document.body.removeChild(textNode);
  34     return result;
  35 }
  36
  37 var forward = false;
  38 var backward = true;
  39
  40 var manyCharacters = "1234567890"
  41 for (i = 0; i < 10; ++i)
  42     manyCharacters += manyCharacters;
  43 var tenThousandCharacters = manyCharacters.substring(0, 10000);
  44
  45 shouldBe("testFind('abc', 'a', forward)", "'0, 1'");
  46 shouldBe("testFind('abc', 'b', forward)", "'1, 2'");
  47 shouldBe("testFind('abc', 'c', forward)", "'2, 3'");
  48 shouldBe("testFind('abc', 'a', backward)", "'0, 1'");
  49 shouldBe("testFind('abc', 'b', backward)", "'1, 2'");
  50 shouldBe("testFind('abc', 'c', backward)", "'2, 3'");
  51 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'a', forward)", "'10000, 10001'");
  52 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'b', forward)", "'10001, 10002'");
  53 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'c', forward)", "'10002, 10003'");
  54 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'a', backward)", "'10000, 10001'");
  55 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'b', backward)", "'10001, 10002'");
  56 shouldBe("testFind(tenThousandCharacters + 'abc' + tenThousandCharacters, 'c', backward)", "'10002, 10003'");
  57 shouldBe("testFind('abcabc', 'a', forward)", "'0, 1'");
  58 shouldBe("testFind('abcabc', 'b', forward)", "'1, 2'");
  59 shouldBe("testFind('abcabc', 'c', forward)", "'2, 3'");
  60 shouldBe("testFind('abcabc', 'a', backward)", "'3, 4'");
  61 shouldBe("testFind('abcabc', 'b', backward)", "'4, 5'");
  62 shouldBe("testFind('abcabc', 'c', backward)", "'5, 6'");
  63 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'a', forward)", "'10000, 10001'");
  64 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'b', forward)", "'10001, 10002'");
  65 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'c', forward)", "'10002, 10003'");
  66 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'a', backward)", "'10003, 10004'");
  67 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'b', backward)", "'10004, 10005'");
  68 shouldBe("testFind(tenThousandCharacters + 'abcabc' + tenThousandCharacters, 'c', backward)", "'10005, 10006'");