third_party/WebKit/LayoutTests/printing/resources/paged-media-test-utils.js

   1 // The buffer to store the results.  We output the results after all
   2 // tests finish.   Note that we cannot have a DOM element where the
   3 // results are stored in HTMLs because the DOM element to store
   4 // results may change the number of pages.
   5 var _results = '';
   6 var _errored = false;
   7
   8 function appendResult(result)
   9 {
  10     _results += '<br>' + result;
  11 }
  12
  13 function pageNumberForElementShouldBe(id, expectedPageNumber)
  14 {
  15     var actualPageNumber = internals.pageNumber(document.getElementById(id));
  16     if (actualPageNumber == expectedPageNumber)
  17         appendResult('PASS: page number of "' + id + '" is ' + actualPageNumber);
  18     else {
  19         appendResult('FAIL: expected page number of "' + id + '" is ' + expectedPageNumber + '. Was ' + actualPageNumber);
  20         _errored = true;
  21     }
  22 }
  23
  24 function numberOfPagesShouldBe(expectedNumberOfPages, pageWidthInPixels, pageHeightInPixels)
  25 {
  26     // pageWidthInPixels and pageHeightInPixels can be omitted. If omitted, 800x600 is used.
  27     var actualNumberOfPages;
  28     if (pageWidthInPixels && pageHeightInPixels)
  29         actualNumberOfPages = internals.numberOfPages(pageWidthInPixels, pageHeightInPixels);
  30     else
  31         actualNumberOfPages = internals.numberOfPages();
  32
  33     if (actualNumberOfPages == expectedNumberOfPages)
  34         appendResult('PASS: number of pages is ' + actualNumberOfPages);
  35     else {
  36         appendResult('FAIL: expected number of pages is ' + expectedNumberOfPages + '. Was ' + actualNumberOfPages);
  37         _errored = true;
  38     }
  39 }
  40
  41 function runPrintingTest(testFunction)
  42 {
  43     if (window.testRunner) {
  44         try {
  45             testFunction();
  46         } catch (err) {
  47             _results += '<p>Exception: ' + err.toString();
  48             _errored = true;
  49         }
  50
  51         if (!_errored)
  52             _results += '<br>All tests passed';
  53     } else {
  54         _results += 'This test requires testRunner. You can test this manually with the above description.';
  55     }
  56
  57     var resultElement = document.createElement('p');
  58     resultElement.innerHTML = _results;
  59     var output = document.getElementById("console") || document.body;
  60     output.appendChild(resultElement);
  61 }
  62
  63 function ratioToPageHeightToPixels(heightInRatioToPageHeight)
  64 {
  65   var pageHeightInPixels = 600 * 1.25;
  66   return Math.floor(pageHeightInPixels * heightInRatioToPageHeight);
  67 }
  68
  69 function createBlockWithRatioToPageHeight(id, heightInRatioToPageHeight)
  70 {
  71     var element = document.createElement("div");
  72     element.id = id;
  73     element.style.height = ratioToPageHeightToPixels(heightInRatioToPageHeight) + "px";
  74     document.getElementById("sandbox").appendChild(element);
  75     return element;
  76 }
  77
  78 function createBlockWithNumberOfLines(id, childLines)
  79 {
  80     var element = document.createElement("div");
  81     element.id = id;
  82     for (var i = 0; i < childLines; ++i) {
  83         element.appendChild(document.createTextNode("line" + i));
  84         element.appendChild(document.createElement("br"));
  85     }
  86     // Make sure that one page has about 20 lines.
  87     element.style.lineHeight = ratioToPageHeightToPixels(0.05) + "px";
  88     document.getElementById("sandbox").appendChild(element);
  89     return element;
  90 }