From 89f43ff48dea0d3bd876661e563a8b4e71f05cb7 Mon Sep 17 00:00:00 2001
From: Sasha Szpakowski <slime73@gmail.com>
Date: Sat, 16 Mar 2024 23:11:14 -0300
Subject: [PATCH] tests: compare screenshot test output to a reference image,
 on desktops.

---
 ...love.test.graphics.captureScreenshot-1.png | Bin 0 -> 831 bytes
 testing/tests/graphics.lua                    |  20 +++++++++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 testing/output/expected/love.test.graphics.captureScreenshot-1.png

diff --git a/testing/output/expected/love.test.graphics.captureScreenshot-1.png b/testing/output/expected/love.test.graphics.captureScreenshot-1.png
new file mode 100644
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GIT binary patch
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diff --git a/testing/tests/graphics.lua b/testing/tests/graphics.lua
index a7bf8e970..860d82099 100644
--- a/testing/tests/graphics.lua
+++ b/testing/tests/graphics.lua
@@ -1452,15 +1452,29 @@ end
 -- love.graphics.captureScreenshot
 love.test.graphics.captureScreenshot = function(test)
   love.graphics.captureScreenshot('example-screenshot.png')
-  test:waitFrames(10)
+  test:waitFrames(1)
   -- need to wait until end of the frame for the screenshot
-  test:assertNotNil(love.filesystem.openFile('example-screenshot.png', 'r'))
+  test:assertTrue(love.filesystem.exists('example-screenshot.png'))
   love.filesystem.remove('example-screenshot.png')
   -- test callback version
+  local cbdata = nil
+  local prevtextcommand = TextCommand
+  TextCommand = "Capturing screenshot"
   love.graphics.captureScreenshot(function (idata)
     test:assertNotEquals(nil, idata, 'check we have image data')
+    cbdata = idata
   end)
-  test:waitFrames(10)
+  test:waitFrames(1)
+  TextCommand = prevtextcommand
+  test:assertNotNil(cbdata)
+
+  if love.system.getOS() == "iOS" or love.system.getOS() == "Android" then
+    -- Mobile operating systems don't let us control the window resolution,
+    -- so we can't compare the reference image properly.
+    test:assertTrue(true, 'skip test')
+  else
+    test:compareImg(cbdata)
+  end
 end