Add test cases to verify Feather V1 deprecation warnings.

Co-authored-by: Sarah Gilmore <sgilmore@mathworks.com>

Author: Kevin Gurney

matlab/test/tfeather.m

@@ -273,6 +273,29 @@ function UnicodeVariableNames(testCase)
             testCase.verifyEqual(actualTable, expectedTable);
         end
 
+        function VerifyFeatherReadDeprecationWarning(testCase)
+            filename = fullfile(pwd, 'temp.feather');
+
+            t = array2table([1, 2, 3]);
+            featherwrite(filename, t);
+            
+            warning("on", "arrow:io:feather:v1:FeatherReadDeprecated");
+            fcn = @() featherread(filename);
+            testCase.verifyWarning(fcn, "arrow:io:feather:v1:FeatherReadDeprecated")
+            warning("off", "arrow:io:feather:v1:FeatherReadDeprecated");
+        end
+
+        function VerifyFeatherWriteDeprecationWarning(testCase)
+            filename = fullfile(pwd, 'temp.feather');
+
+            t = array2table([1, 2, 3]);
+            
+            warning("on", "arrow:io:feather:v1:FeatherWriteDeprecated");
+            fcn = @() featherwrite(filename, t);
+            testCase.verifyWarning(fcn, "arrow:io:feather:v1:FeatherWriteDeprecated")
+            warning("off", "arrow:io:feather:v1:FeatherReadDeprecated");
+        end
+
     end
 end