Add tests about time precision preservation when converting MATLAB du…

…ration to arrow time32 and time64
mathworks · Nov 9, 2023 · 0e1061d · 0e1061d
1 parent 8033342
commit 0e1061d
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diff --git a/matlab/test/arrow/array/tTime32Array.m b/matlab/test/arrow/array/tTime32Array.m
@@ -30,6 +30,14 @@ function Basic(tc)
             times = seconds(1:4);
             array = tc.ArrowArrayConstructorFcn(times);
             tc.verifyInstanceOf(array, "arrow.array.Time32Array");
+            tc.verifyEqual(array.toMATLAB, times');
+        end
+
+        function TimeUnitDefaultValue(tc)
+            % Verify that the default value of "TimeUnit" is "second".
+            times = seconds([1.2 1.3 1.4 1.5 1.7]);
+            array = tc.ArrowArrayConstructorFcn(times);
+            tc.verifyEqual(array.toMATLAB, seconds([1;1;1;2;2]));
         end
 
         function TypeIsTime32(tc)
@@ -274,6 +282,22 @@ function TestIsEqualFalseTimeUnitMistmatch(tc)
             % arrays are not equal
             tc.verifyFalse(isequal(array1, array2));
         end
+
+        function RoundTimeBySpecifyTimeUnit(tc)
+            % Verify that the input parameter "TimeUnit" is used to specify
+            % the time resolution. The value is rounded off based on the
+            % specified "TimeUnit".
+
+            % TimeUnit="Second"
+            matlabTimes = seconds([1.1, 1.4, 1.5, 1.9, 2.001]);
+            arrowTimes = tc.ArrowArrayConstructorFcn(matlabTimes, TimeUnit="Second");
+            tc.verifyEqual(arrowTimes.toMATLAB(),seconds([1, 1, 2, 2, 2])');
+
+            % TimeUnit="Millisecond"
+            matlabTimes = seconds([1.1, 1.99, 1.001, 1.0004, 1.0005, 2.001]);
+            arrowTimes = tc.ArrowArrayConstructorFcn(matlabTimes, TimeUnit="Millisecond");
+            tc.verifyEqual(arrowTimes.toMATLAB(),seconds([1.1, 1.99, 1.001, 1, 1.001, 2.001])','AbsTol',seconds(1e-15));
+        end
     end
 
     methods

diff --git a/matlab/test/arrow/array/tTime64Array.m b/matlab/test/arrow/array/tTime64Array.m
@@ -30,6 +30,25 @@ function Basic(tc)
             times = seconds(1:4);
             array = tc.ArrowArrayConstructorFcn(times);
             tc.verifyInstanceOf(array, "arrow.array.Time64Array");
+            tc.verifyEqual(array.toMATLAB, times');
+        end
+
+        function TimeUnitDefaultValue(tc)
+            % Verify that the default value of "TimeUnit" is "Microsecond".
+            matlabTimes = seconds([1; ...
+                                   0.001; ...
+                                   2.004521; ...
+                                   3.1234564; ...
+                                   4.1234566; ...
+                                   5.000000123]);
+            arrowArray = tc.ArrowArrayConstructorFcn(matlabTimes);
+            tc.verifyEqual(arrowArray.toMATLAB(), ...
+                           seconds([1;...
+                                    0.001; ...
+                                    2.004521; ...
+                                    3.123456; ...
+                                    4.123457; ...
+                                    5]));
         end
 
         function TypeIsTime64(tc)
@@ -290,6 +309,54 @@ function TestIsEqualFalseTimeUnitMistmatch(tc)
             % arrays are not equal
             tc.verifyFalse(isequal(array1, array2));
         end
+
+        function RoundTimeBySpecifyTimeUnit(tc)
+            % Verify that the input parameter "TimeUnit" is used to specify
+            % the time resolution. The value is rounded off based on the
+            % specified "TimeUnit".
+
+            % TimeUnit="Microsecond"
+            matlabTimes = seconds([1.000001, ...
+                                   2.999999, ...
+                                   0.0002004, ...
+                                   0.0000035, ...
+                                   10.123456499, ...
+                                   9.999999543]);
+            arrowTimes = tc.ArrowArrayConstructorFcn(matlabTimes, TimeUnit="Microsecond");
+            tc.verifyEqual(arrowTimes.toMATLAB(), ...
+                           seconds([1.000001, ...
+                                    2.999999, ...
+                                    0.0002, ...
+                                    0.000004, ...
+                                    10.123456, ...
+                                    10])', ...
+                          'AbsTol',seconds(1e-14));
+
+            % TimeUnit="Nanosecond"
+            matlabTimes = seconds([1, ...
+                                   1.123, ...
+                                   1.12345, ...
+                                   1.123456, ...
+                                   1.1234567, ...
+                                   1.12345678, ...
+                                   1.123456789, ...
+                                   1.1234567894, ...
+                                   1.1234567895, ...
+                                   1.123456789009]);
+            arrowTimes = tc.ArrowArrayConstructorFcn(matlabTimes, TimeUnit="Nanosecond");
+            tc.verifyEqual(arrowTimes.toMATLAB(),...
+                           seconds([1, ...
+                                    1.123, ...
+                                    1.12345, ...
+                                    1.123456, ...
+                                    1.1234567, ...
+                                    1.12345678, ...
+                                    1.123456789, ...
+                                    1.123456789, ...
+                                    1.123456790, ...
+                                    1.123456789])',...
+                          'AbsTol',seconds(1e-15));
+        end
     end
 
     methods