fix sdl_test test that failed in CI cpp mode (#10314)

* fix sdl_test test that failed in CI cpp mode

* preserve old code for NimInAction in `nim c` mode

testament/categories.nim

@@ -352,13 +352,13 @@ proc testNimInAction(r: var TResults, cat: Category, options: string) =
     "8b5d28e985c0542163927d253a3e4fc9",
     "783299b98179cc725f9c46b5e3b5381f",
     "1a2b3fba1187c68d6a9bfa66854f3318",
-    "80f9c3e594a798225046e8a42e990daf"
+    "391ff57b38d9ea6f3eeb3fe69ab539d3"
   ]
 
   for i, test in tests:
     let filename = testsDir / test.addFileExt("nim")
     let testHash = getMD5(readFile(filename).string)
-    doAssert testHash == refHashes[i], "Nim in Action test " & filename & " was changed."
+    doAssert testHash == refHashes[i], "Nim in Action test " & filename & " was changed: " & $(i: i, testHash: testHash, refHash: refHashes[i])
   # Run the tests.
   for testfile in tests:
     test "tests/" & testfile & ".nim"

tests/niminaction/Chapter8/sdl/sdl_test.nim

@@ -17,12 +17,24 @@ discard pollEvent(nil)
 renderer.setDrawColor 29, 64, 153, 255
 renderer.clear
 renderer.setDrawColor 255, 255, 255, 255
+
+when defined(c):
+  # just to ensure code from NimInAction still works, but
+  # the `else` branch would work as well in C mode
   var points = [
     (260'i32, 320'i32),
     (260'i32, 110'i32),
     (360'i32, 320'i32),
     (360'i32, 110'i32)
   ]
+else:
+  var points = [
+    (260.cint, 320.cint),
+    (260.cint, 110.cint),
+    (360.cint, 320.cint),
+    (360.cint, 110.cint)
+  ]
+
 renderer.drawLines(addr points[0], points.len.cint)
 
 renderer.present