tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_editor_goto_line.js (2891B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 function testJumpToLine(ed, inputLine, expectCursor) {
      7  ed.jumpToLine();
      8  const editorDoc = ed.container.contentDocument;
      9  const lineInput = editorDoc.querySelector("input");
     10  lineInput.value = inputLine;
     11  EventUtils.synthesizeKey("VK_RETURN", {}, editorDoc.defaultView);
     12  // CodeMirror lines and columns are 0-based.
     13  ch(
     14    ed.getCursor(),
     15    expectCursor,
     16    "jumpToLine " + inputLine + " expects cursor " + expectCursor.toSource()
     17  );
     18 }
     19 
     20 async function test() {
     21  waitForExplicitFinish();
     22  const { ed, win } = await setup();
     23  const textLines = [
     24    "// line 1",
     25    "//  line 2",
     26    "//   line 3",
     27    "//    line 4",
     28    "//     line 5",
     29    "",
     30  ];
     31  ed.setText(textLines.join("\n"));
     32  await promiseWaitForFocus();
     33 
     34  const testVectors = [
     35    // Various useless inputs go to line 0, column 0 or do nothing.
     36    ["", { line: 0, ch: 0 }],
     37    [":", { line: 0, ch: 0 }],
     38    [" ", { line: 0, ch: 0 }],
     39    [" : ", { line: 0, ch: 0 }],
     40    ["a:b", { line: 0, ch: 0 }],
     41    ["LINE: COLUMN ", { line: 0, ch: 0 }],
     42    ["-1", { line: 0, ch: 0 }],
     43    [":-1", { line: 0, ch: 0 }],
     44    ["-1:-1", { line: 0, ch: 0 }],
     45    ["0", { line: 0, ch: 0 }],
     46    [":0", { line: 0, ch: 0 }],
     47    ["0:0", { line: 0, ch: 0 }],
     48    // Starting here expect data needs to get updated for length changes to
     49    // "textLines" above.
     50    // Just jump to line
     51    ["1", { line: 0, ch: 0 }],
     52    // Jump to second character in line
     53    ["1:2", { line: 0, ch: 1 }],
     54    // Jump to last character on line
     55    ["1:9", { line: 0, ch: 8 }],
     56    // Jump just after last character on line (end of line)
     57    ["1:10", { line: 0, ch: 9 }],
     58    // Jump one character past end of line (gets clamped to end of line)
     59    ["1:11", { line: 0, ch: 9 }],
     60    ["2", { line: 1, ch: 0 }],
     61    ["2:2", { line: 1, ch: 1 }],
     62    ["2:10", { line: 1, ch: 9 }],
     63    ["2:11", { line: 1, ch: 10 }],
     64    ["2:12", { line: 1, ch: 10 }],
     65    ["3", { line: 2, ch: 0 }],
     66    ["3:2", { line: 2, ch: 1 }],
     67    ["3:11", { line: 2, ch: 10 }],
     68    ["3:12", { line: 2, ch: 11 }],
     69    ["3:13", { line: 2, ch: 11 }],
     70    ["4", { line: 3, ch: 0 }],
     71    ["4:2", { line: 3, ch: 1 }],
     72    ["4:12", { line: 3, ch: 11 }],
     73    ["4:13", { line: 3, ch: 12 }],
     74    ["4:14", { line: 3, ch: 12 }],
     75    ["5", { line: 4, ch: 0 }],
     76    ["5:2", { line: 4, ch: 1 }],
     77    ["5:13", { line: 4, ch: 12 }],
     78    ["5:14", { line: 4, ch: 13 }],
     79    ["5:15", { line: 4, ch: 13 }],
     80    // One line beyond last newline in editor text:
     81    ["6", { line: 5, ch: 0 }],
     82    ["6:2", { line: 5, ch: 0 }],
     83    // Two line beyond last newline in editor text (gets clamped):
     84    ["7", { line: 5, ch: 0 }],
     85    ["7:2", { line: 5, ch: 0 }],
     86  ];
     87  testVectors.forEach(vector => {
     88    testJumpToLine(ed, vector[0], vector[1]);
     89  });
     90  teardown(ed, win);
     91 }