1 files changed, 65 insertions, 40 deletions
diff --git a/browser/components/screenshots/tests/browser/browser_screenshots_test_full_page.js b/browser/components/screenshots/tests/browser/browser_screenshots_test_full_page.js
index 51cda963d9..006a9819ed 100644
--- a/browser/components/screenshots/tests/browser/browser_screenshots_test_full_page.js
+++ b/browser/components/screenshots/tests/browser/browser_screenshots_test_full_page.js
@@ -3,8 +3,11 @@
 
 "use strict";
 
-function assertRange(lhs, rhsMin, rhsMax, msg) {
-  Assert.ok(lhs >= rhsMin && lhs <= rhsMax, msg);
+function assertPixel(actual, expected, message) {
+  info(message);
+  isfuzzy(actual[0], expected[0], 1, "R color value");
+  isfuzzy(actual[1], expected[1], 1, "G color value");
+  isfuzzy(actual[2], expected[2], 1, "B color value");
 }
 
 add_task(async function test_fullpageScreenshot() {
@@ -65,25 +68,36 @@ add_task(async function test_fullpageScreenshot() {
       Assert.equal(result.width, expectedWidth, "Widths should be equal");
       Assert.equal(result.height, expectedHeight, "Heights should be equal");
 
-      // top left
-      assertRange(result.color.topLeft[0], 110, 111, "R color value");
-      assertRange(result.color.topLeft[1], 110, 111, "G color value");
-      assertRange(result.color.topLeft[2], 110, 111, "B color value");
-
-      // top right
-      assertRange(result.color.topRight[0], 55, 56, "R color value");
-      assertRange(result.color.topRight[1], 155, 156, "G color value");
-      assertRange(result.color.topRight[2], 155, 156, "B color value");
-
-      // bottom left
-      assertRange(result.color.bottomLeft[0], 105, 106, "R color value");
-      assertRange(result.color.bottomLeft[1], 55, 56, "G color value");
-      assertRange(result.color.bottomLeft[2], 105, 106, "B color value");
-
-      // bottom right
-      assertRange(result.color.bottomRight[0], 52, 53, "R color value");
-      assertRange(result.color.bottomRight[1], 127, 128, "G color value");
-      assertRange(result.color.bottomRight[2], 152, 153, "B color value");
+      // Due to https://bugzil.la/1396587, the pasted image colors differ from
+      // the original image on macOS. Once that bug is fixed, we can remove the
+      // special check for macOS.
+      if (AppConstants.platform === "macosx") {
+        assertPixel(result.color.topLeft, [130, 130, 130], "Top left pixel");
+        assertPixel(result.color.topRight, [66, 170, 171], "Top right pixel");
+        assertPixel(
+          result.color.bottomLeft,
+          [125, 75, 125],
+          "Bottom left pixel"
+        );
+        assertPixel(
+          result.color.bottomRight,
+          [64, 145, 169],
+          "Bottom right pixel"
+        );
+      } else {
+        assertPixel(result.color.topLeft, [111, 111, 111], "Top left pixel");
+        assertPixel(result.color.topRight, [55, 155, 155], "Top right pixel");
+        assertPixel(
+          result.color.bottomLeft,
+          [105, 55, 105],
+          "Bottom left pixel"
+        );
+        assertPixel(
+          result.color.bottomRight,
+          [52, 127, 152],
+          "Bottom right pixel"
+        );
+      }
     }
   );
 });
@@ -151,25 +165,36 @@ add_task(async function test_fullpageScreenshotScrolled() {
       Assert.equal(result.width, expectedWidth, "Widths should be equal");
       Assert.equal(result.height, expectedHeight, "Heights should be equal");
 
-      // top left
-      assertRange(result.color.topLeft[0], 110, 111, "R color value");
-      assertRange(result.color.topLeft[1], 110, 111, "G color value");
-      assertRange(result.color.topLeft[2], 110, 111, "B color value");
-
-      // top right
-      assertRange(result.color.topRight[0], 55, 56, "R color value");
-      assertRange(result.color.topRight[1], 155, 156, "G color value");
-      assertRange(result.color.topRight[2], 155, 156, "B color value");
-
-      // bottom left
-      assertRange(result.color.bottomLeft[0], 105, 106, "R color value");
-      assertRange(result.color.bottomLeft[1], 55, 56, "G color value");
-      assertRange(result.color.bottomLeft[2], 105, 106, "B color value");
-
-      // bottom right
-      assertRange(result.color.bottomRight[0], 52, 53, "R color value");
-      assertRange(result.color.bottomRight[1], 127, 128, "G color value");
-      assertRange(result.color.bottomRight[2], 152, 153, "B color value");
+      // Due to https://bugzil.la/1396587, the pasted image colors differ from
+      // the original image on macOS. Once that bug is fixed, we can remove the
+      // special check for macOS.
+      if (AppConstants.platform === "macosx") {
+        assertPixel(result.color.topLeft, [130, 130, 130], "Top left pixel");
+        assertPixel(result.color.topRight, [66, 170, 171], "Top right pixel");
+        assertPixel(
+          result.color.bottomLeft,
+          [125, 75, 125],
+          "Bottom left pixel"
+        );
+        assertPixel(
+          result.color.bottomRight,
+          [64, 145, 169],
+          "Bottom right pixel"
+        );
+      } else {
+        assertPixel(result.color.topLeft, [111, 111, 111], "Top left pixel");
+        assertPixel(result.color.topRight, [55, 155, 155], "Top right pixel");
+        assertPixel(
+          result.color.bottomLeft,
+          [105, 55, 105],
+          "Bottom left pixel"
+        );
+        assertPixel(
+          result.color.bottomRight,
+          [52, 127, 152],
+          "Bottom right pixel"
+        );
+      }
     }
   );
 });