1 files changed, 91 insertions, 0 deletions
diff --git a/devtools/client/shared/sourceeditor/test/browser_editor_goto_line.js b/devtools/client/shared/sourceeditor/test/browser_editor_goto_line.js
new file mode 100644
index 0000000000..325c8c6dd5
--- /dev/null
+++ b/devtools/client/shared/sourceeditor/test/browser_editor_goto_line.js
@@ -0,0 +1,91 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+function testJumpToLine(ed, inputLine, expectCursor) {
+  ed.jumpToLine();
+  const editorDoc = ed.container.contentDocument;
+  const lineInput = editorDoc.querySelector("input");
+  lineInput.value = inputLine;
+  EventUtils.synthesizeKey("VK_RETURN", {}, editorDoc.defaultView);
+  // CodeMirror lines and columns are 0-based.
+  ch(
+    ed.getCursor(),
+    expectCursor,
+    "jumpToLine " + inputLine + " expects cursor " + expectCursor.toSource()
+  );
+}
+
+async function test() {
+  waitForExplicitFinish();
+  const { ed, win } = await setup();
+  const textLines = [
+    "// line 1",
+    "//  line 2",
+    "//   line 3",
+    "//    line 4",
+    "//     line 5",
+    "",
+  ];
+  ed.setText(textLines.join("\n"));
+  await promiseWaitForFocus();
+
+  const testVectors = [
+    // Various useless inputs go to line 0, column 0 or do nothing.
+    ["", { line: 0, ch: 0 }],
+    [":", { line: 0, ch: 0 }],
+    [" ", { line: 0, ch: 0 }],
+    [" : ", { line: 0, ch: 0 }],
+    ["a:b", { line: 0, ch: 0 }],
+    ["LINE: COLUMN ", { line: 0, ch: 0 }],
+    ["-1", { line: 0, ch: 0 }],
+    [":-1", { line: 0, ch: 0 }],
+    ["-1:-1", { line: 0, ch: 0 }],
+    ["0", { line: 0, ch: 0 }],
+    [":0", { line: 0, ch: 0 }],
+    ["0:0", { line: 0, ch: 0 }],
+    // Starting here expect data needs to get updated for length changes to
+    // "textLines" above.
+    // Just jump to line
+    ["1", { line: 0, ch: 0 }],
+    // Jump to second character in line
+    ["1:2", { line: 0, ch: 1 }],
+    // Jump to last character on line
+    ["1:9", { line: 0, ch: 8 }],
+    // Jump just after last character on line (end of line)
+    ["1:10", { line: 0, ch: 9 }],
+    // Jump one character past end of line (gets clamped to end of line)
+    ["1:11", { line: 0, ch: 9 }],
+    ["2", { line: 1, ch: 0 }],
+    ["2:2", { line: 1, ch: 1 }],
+    ["2:10", { line: 1, ch: 9 }],
+    ["2:11", { line: 1, ch: 10 }],
+    ["2:12", { line: 1, ch: 10 }],
+    ["3", { line: 2, ch: 0 }],
+    ["3:2", { line: 2, ch: 1 }],
+    ["3:11", { line: 2, ch: 10 }],
+    ["3:12", { line: 2, ch: 11 }],
+    ["3:13", { line: 2, ch: 11 }],
+    ["4", { line: 3, ch: 0 }],
+    ["4:2", { line: 3, ch: 1 }],
+    ["4:12", { line: 3, ch: 11 }],
+    ["4:13", { line: 3, ch: 12 }],
+    ["4:14", { line: 3, ch: 12 }],
+    ["5", { line: 4, ch: 0 }],
+    ["5:2", { line: 4, ch: 1 }],
+    ["5:13", { line: 4, ch: 12 }],
+    ["5:14", { line: 4, ch: 13 }],
+    ["5:15", { line: 4, ch: 13 }],
+    // One line beyond last newline in editor text:
+    ["6", { line: 5, ch: 0 }],
+    ["6:2", { line: 5, ch: 0 }],
+    // Two line beyond last newline in editor text (gets clamped):
+    ["7", { line: 5, ch: 0 }],
+    ["7:2", { line: 5, ch: 0 }],
+  ];
+  testVectors.forEach(vector => {
+    testJumpToLine(ed, vector[0], vector[1]);
+  });
+  teardown(ed, win);
+}