test updates

Author: rweigel

.travis.yml

@@ -42,3 +42,4 @@ v0.2.3b2:
 	2026-05-19 566fb02 Remove datetick; handle fill time values
 	2026-05-19 b99fbd3 Categorical fixes
 	2026-07-17 1daf53c fill2nan fix
+	2026-07-30 5c6eb04 rasterize heatmap if > 50000 cells

CHANGES.txt

@@ -64,11 +64,11 @@ def imgdiff(img1, img2, diff_file=None, show_diff=False):
 
     diff = imgdiff(ref_bytes, now_bytes, diff_file=diff_file, show_diff=show_diff)
 
-    if diff == False:
-        print("imgcheck(): \033[32mPASS\033[0m: Image")
-        print("   " + ref_file)
-        print("   has not changed")
-        return True
-    else:
+    if diff:
         print("imgcheck(): \033[0;31mFAIL\033[0m: Images differ. See diff image: " + diff_file)
         return False
+    else:
+        print("imgcheck(): \033[32mPASS\033[0m: Images same:")
+        print("   " + ref_file)
+        print("   " + now_file)
+        return True