Issue #1233 - Part 2: Update Reftests

List of relevant patches applied:

1425599 part 15 - [css-grid] Test reference fixes + more tests.

1373678 Part 3: Add line number checks to test_grid_implicit.html.

1416350 - Part 3: Add test to verify line numbers of grids with leading implicit tracks.

1416350 - Part 4: Add a reftest of repeat:auto-fit grids with leading implicit tracks.

1417711 - [css-grid] An abs.pos. grid container child that only covers removed 'auto-fit' tracks should not span to the end padding edge.

1416350 - Part 5: Correct the expected results for grids that have leading implicit tracks.

1418727 part 3 - [css-grid] Reftest updates.

3 files changed, 162 insertions, 3 deletions

diff --git a/dom/grid/test/chrome.ini b/dom/grid/test/chrome.ini
index 2241cf9ebb..169fa9b893 100644
--- a/dom/grid/test/chrome.ini
+++ b/dom/grid/test/chrome.ini
@@ -2,6 +2,7 @@
 [chrome/test_grid_fragmentation.html]
 [chrome/test_grid_implicit.html]
 [chrome/test_grid_lines.html]
+[chrome/test_grid_line_numbers.html]
 [chrome/test_grid_object.html]
 [chrome/test_grid_repeats.html]
 [chrome/test_grid_tracks.html]
diff --git a/dom/grid/test/chrome/test_grid_implicit.html b/dom/grid/test/chrome/test_grid_implicit.html
index c7782e0e5f..1f71426583 100644
--- a/dom/grid/test/chrome/test_grid_implicit.html
+++ b/dom/grid/test/chrome/test_grid_implicit.html
@@ -33,6 +33,11 @@ body {
 	grid-template-rows: [areaA-end areaB-start areaC-end] 50px [areaA-start areaB-end areaC-start];
 }
 
+.template4 {
+	grid-template-columns: 100px 50px 100px;
+	grid-template-rows: 50px;
+}
+
 .box {
 	background-color: #444;
 	color: #fff;
@@ -50,6 +55,9 @@ body {
 .d {
 	grid-area: areaD;
 }
+.e {
+	grid-column: -7 / 5;
+}
 </style>
 
 <script>
@@ -78,9 +86,12 @@ function runTests() {
 		is(grid.cols.lines[4].type, "implicit", "Grid column line 5 is implicit.");
 		is(grid.cols.lines[5].type, "implicit", "Grid column line 6 is implicit.");
 		
-		is(grid.rows.lines[0].type, "implicit", "Grid row line 1 is implicit.");
-		is(grid.rows.lines[1].type, "explicit", "Grid row line 2 is explicit.");
-		is(grid.rows.lines[3].type, "explicit", "Grid row line 4 is explicit.");
+		is(grid.rows.lines[0].type, "implicit", "Grid row line 0 is implicit.");
+		is(grid.rows.lines[0].number, 0, "Grid row line 0 has correct number.");
+		is(grid.rows.lines[1].type, "explicit", "Grid row line 1 is explicit.");
+		is(grid.rows.lines[1].number, 1, "Grid row line 1 has correct number.");
+		is(grid.rows.lines[3].type, "explicit", "Grid row line 3 is explicit.");
+		is(grid.rows.lines[3].number, 3, "Grid row line 3 has correct number.");
 		
 		// test that row line 1 gets the name forced on it by placement of item B
 		todo_isnot(grid.rows.lines[0].names.indexOf("got-this-name-implicitly"), -1,
@@ -221,6 +232,48 @@ function runTests() {
 		}
 	}
 
+	// test the fourth grid wrapper
+	wrapper = document.getElementById("wrapper4");
+	grid = wrapper.getGridFragments()[0];
+
+	// test column and row line counts
+	is(grid.cols.lines.length, 8,
+	"Grid.cols.lines property expands properly with implicit columns on both sides."
+	);
+	is(grid.rows.lines.length, 2,
+	"Grid.rows.lines property is as expected"
+	);
+
+	if (grid.cols.lines.length == 8) {
+	// check that all the lines get correct implict/explicit type and number
+	let expectedType = [
+		"implicit",
+		"implicit",
+		"implicit",
+		"explicit",
+		"explicit",
+		"explicit",
+		"explicit",
+		"implicit",
+		];
+	let expectedNumber = [
+		0,
+		0,
+		0,
+		1,
+		2,
+		3,
+		4,
+		5,
+		];
+
+	for (let i = 0; i < grid.cols.lines.length; i++) {
+		let line = grid.cols.lines[i];
+		is(line.type, expectedType[i], "Line index " + i + " has expected type.");
+		is(line.number, expectedNumber[i], "Line index " + i + " has expected number.");
+	}
+	}
+
 	SimpleTest.finish();
 }
 </script>
@@ -246,5 +299,9 @@ function runTests() {
 		<div id="boxC" class="box c">C</div>
 	</div>
 
+	<div id="wrapper4" class="wrapper template4">
+		<div id="boxE" class="box e">E</div>
+	</div>
+
 </body>
 </html>
diff --git a/dom/grid/test/chrome/test_grid_line_numbers.html b/dom/grid/test/chrome/test_grid_line_numbers.html
new file mode 100644
index 0000000000..c8e5226b60
--- /dev/null
+++ b/dom/grid/test/chrome/test_grid_line_numbers.html
@@ -0,0 +1,101 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<style>
+body {
+  margin: 40px;
+}
+.wrapper {
+  display: grid;
+  grid-gap: 0px;
+  background-color: #f00;
+}
+.wrapper > div {
+  background-color: #444;
+  color: #fff;
+}
+.repeatColumns {
+  width: 600px;
+  grid-auto-columns: 50px;
+  grid-template-columns: repeat(auto-fit, 100px);
+}
+.repeatRows {
+  height: 600px;
+  grid-auto-rows: 50px;
+  grid-template-rows: repeat(auto-fit, 100px);
+}
+</style>
+
+<script>
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+
+function testLines(elementName, lines, expectedValues) {
+  is(lines.count, expectedValues.count, elementName + " has expected number of lines.");
+  for (let i = 0; i < lines.length; i++) {
+    is(lines[i].number, expectedValues[i].number, elementName + " line index " + i + " has expected number.");
+  }
+}
+
+function runTests() {
+  let grid;
+  let lines;
+  let expectedValues;
+
+  grid = document.getElementById("gridWithColumns").getGridFragments()[0];
+  lines = grid.cols.lines;
+  expectedValues = [
+    { "number": 0 },
+    { "number": 0 },
+    { "number": 1 },
+    { "number": 2 },
+    { "number": 3 },
+    { "number": 4 },
+    { "number": 5 },
+    { "number": 6 },
+    { "number": 7 },
+    { "number": 8 },
+  ];
+  testLines("gridWithColumns", lines, expectedValues);
+
+  grid = document.getElementById("gridWithRows").getGridFragments()[0];
+  lines = grid.rows.lines;
+  expectedValues = [
+    { "number": 0 },
+    { "number": 0 },
+    { "number": 1 },
+    { "number": 2 },
+    { "number": 3 },
+    { "number": 4 },
+    { "number": 5 },
+    { "number": 6 },
+    { "number": 7 },
+    { "number": 8 },
+  ];
+  testLines("gridWithRows", lines, expectedValues);
+
+  SimpleTest.finish();
+}
+</script>
+</head>
+<body onLoad="runTests();">
+
+<div id="gridWithColumns" class="wrapper repeatColumns">
+<div style="grid-column: -9">A</div>
+<div style="grid-column: 4">B</div>
+<div style="grid-column: 7">C</div>
+</div>
+
+<div id="gridWithRows" class="wrapper repeatRows">
+<div style="grid-row: span 3 / 2">A</div>
+<div style="grid-row: 4">B</div>
+<div style="grid-row: 5">C</div>
+<div style="grid-row: span 2 / 8">D</div>
+</div>
+
+</body>
+</html>