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% Licensed to the Apache Software Foundation (ASF) under one or more
% contributor license agreements. See the NOTICE file distributed with
% this work for additional information regarding copyright ownership.
% The ASF licenses this file to you under the Apache License, Version
% 2.0 (the "License"); you may not use this file except in compliance
% with the License. You may obtain a copy of the License at
%
% http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS,
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
% implied. See the License for the specific language governing
% permissions and limitations under the License.
classdef tTimestampArray < matlab.unittest.TestCase
% Tests for arrow.array.TimestampArray
properties
ArrowArrayConstructorFcn = @arrow.array.TimestampArray.fromMATLAB
end
properties(TestParameter)
TimeZone = {"" "America/New_York"}
TimeUnit = {arrow.type.TimeUnit.Second arrow.type.TimeUnit.Millisecond
arrow.type.TimeUnit.Microsecond arrow.type.TimeUnit.Nanosecond}
end
methods(Test)
function Basic(tc, TimeZone)
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = tc.ArrowArrayConstructorFcn(dates);
className = string(class(arrowArray));
tc.verifyEqual(className, "arrow.array.TimestampArray");
end
function TestNumElements(testCase, TimeZone)
% Verify the NumElements property.
dates = datetime.empty(0, 1);
dates.TimeZone = TimeZone;
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.NumElements, int64(0));
dates = datetime(2023, 6, 22, TimeZone=TimeZone);
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.NumElements, int64(1));
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.NumElements, int64(5));
end
function TestNumNulls(testCase)
% Verify the NumNulls property returns correct value.
% array1 has 0 null values.
dates = datetime(2023, 1, 1) + days(1:5)';
array1 = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(array1.NumNulls, int64(0));
% array2 has 3 null values.
array2 = testCase.ArrowArrayConstructorFcn(dates, Valid=[1 2]);
testCase.verifyEqual(array2.NumNulls, int64(3));
end
function TestNumNullsNoSetter(testCase)
% Verify the NumNulls property is read-only.
data = datetime(2023, 1, 1) + days(1:5)';
array = testCase.ArrowArrayConstructorFcn(data, Valid=[2 3]);
fcn = @() setfield(array, "NumNulls", 1);
testCase.verifyError(fcn, "MATLAB:class:SetProhibited");
end
function TestDefaultTimestampType(testCase, TimeZone)
% Verify the TimestampArray's units is Microsecond by default and
% its TimeZone value is taken from the input datetime.
import arrow.array.TimestampArray
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyTimestampType(arrowArray.Type, arrow.type.TimeUnit.Microsecond, TimeZone);
end
function TestSupplyTimeUnit(testCase, TimeZone)
% Supply the TimeUnit name-value pair at construction.
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit="Second");
testCase.verifyTimestampType(arrowArray.Type, arrow.type.TimeUnit.Second, TimeZone);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit="Millisecond");
testCase.verifyTimestampType(arrowArray.Type, arrow.type.TimeUnit.Millisecond, TimeZone);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit="Microsecond");
testCase.verifyTimestampType(arrowArray.Type, arrow.type.TimeUnit.Microsecond, TimeZone);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit="Nanosecond");
testCase.verifyTimestampType(arrowArray.Type, arrow.type.TimeUnit.Nanosecond, TimeZone);
end
function TestToMATLAB(testCase, TimeUnit, TimeZone)
% Verify toMATLAB() round-trips the original datetime array.
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit);
values = toMATLAB(arrowArray);
testCase.verifyEqual(values, dates');
end
function TestDatetime(testCase, TimeUnit, TimeZone)
% Verify datetime() round-trips the original datetime array.
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit);
values = datetime(arrowArray);
testCase.verifyEqual(values, dates');
end
function TestValid(testCase, TimeZone)
% Verify the Valid property returns the expected logical vector.
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
dates([2 4]) = NaT;
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.Valid, [true; false; true; false; true]);
testCase.verifyEqual(toMATLAB(arrowArray), dates');
testCase.verifyEqual(datetime(arrowArray), dates');
end
function TestInferNulls(testCase, TimeUnit, TimeZone)
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
dates([2 4]) = NaT;
% Verify NaT is treated as a null value if InferNulls=true.
expectedDates = dates';
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit, InferNulls=true);
testCase.verifyEqual(arrowArray.Valid, [true; false; true; false; true]);
testCase.verifyEqual(toMATLAB(arrowArray), expectedDates);
% Verify NaT is not treated as a null value if InferNulls=false.
% The NaT values are mapped to int64(0).
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit, InferNulls=false);
testCase.verifyEqual(arrowArray.Valid, [true; true; true; true; true]);
% If the TimestampArray is zoned, int64(0) may not correspond
% to Jan-1-1970. getFillValue takes into account the TimeZone.
fill = getFillValue(TimeZone);
expectedDates([2 4]) = fill;
testCase.verifyEqual(toMATLAB(arrowArray), expectedDates);
end
function TestValidNVPair(testCase, TimeUnit, TimeZone)
dates = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
dates([2 4]) = NaT;
% Supply the Valid name-value pair as vector of indices.
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit, Valid=[1 2 5]);
testCase.verifyEqual(arrowArray.Valid, [true; true; false; false; true]);
expectedDates = dates';
expectedDates(2) = getFillValue(TimeZone);
expectedDates([3 4]) = NaT;
testCase.verifyEqual(toMATLAB(arrowArray), expectedDates);
% Supply the Valid name-value pair as a logical scalar.
arrowArray = testCase.ArrowArrayConstructorFcn(dates, TimeUnit=TimeUnit, Valid=false);
testCase.verifyEqual(arrowArray.Valid, [false; false; false; false; false]);
expectedDates(:) = NaT;
testCase.verifyEqual(toMATLAB(arrowArray), expectedDates);
end
function ErrorIfNonVector(testCase)
dates = datetime(2023, 6, 2) + days(0:11);
dates = reshape(dates, 2, 6);
fcn = @() testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyError(fcn, "arrow:array:InvalidShape");
dates = reshape(dates, 3, 2, 2);
fcn = @() testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyError(fcn, "arrow:array:InvalidShape");
end
function ErrorIfNotDatetime(testCase)
data = seconds(1:4);
fcn = @() testCase.ArrowArrayConstructorFcn(data);
testCase.verifyError(fcn, "arrow:array:InvalidType");
end
function EmptyDatetimeVector(testCase)
import arrow.array.TimestampArray
dates = datetime.empty(0, 0);
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.NumElements, int64(0));
testCase.verifyEqual(arrowArray.Valid, logical.empty(0, 1));
testCase.verifyEqual(toMATLAB(arrowArray), datetime.empty(0, 1));
% test with NDimensional empty array
dates = datetime.empty(0, 1, 0);
arrowArray = testCase.ArrowArrayConstructorFcn(dates);
testCase.verifyEqual(arrowArray.NumElements, int64(0));
testCase.verifyEqual(arrowArray.Valid, logical.empty(0, 1));
testCase.verifyEqual(toMATLAB(arrowArray), datetime.empty(0, 1));
end
function TestIsEqualTrue(tc, TimeZone)
% Verifies arrays are considered equal if:
%
% 1. Their Type properties are equal
% 2. They have the same number of elements (i.e. their NumElements properties are equal)
% 3. They have the same validity bitmap (i.e. their Valid properties are equal)
% 4. All corresponding valid elements have the same values
dates1 = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
dates2 = datetime(2023, 6, 22, TimeZone=TimeZone) + days([0 1 5 3 4]);
array1 = tc.ArrowArrayConstructorFcn(dates1, Valid=[1 2 4]);
array2 = tc.ArrowArrayConstructorFcn(dates1, Valid=[1 2 4]);
array3 = tc.ArrowArrayConstructorFcn(dates2, Valid=[1 2 4]);
tc.verifyTrue(isequal(array1, array2));
tc.verifyTrue(isequal(array1, array3));
% Test supplying more than two arrays to isequal
tc.verifyTrue(isequal(array1, array2, array3));
end
function TestIsEqualFalse(tc, TimeZone)
% Verify isequal returns false when expected.
dates1 = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
dates2 = datetime(2023, 6, 22, TimeZone=TimeZone) + days([1 1 2 3 4]);
dates3 = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:5);
array1 = tc.ArrowArrayConstructorFcn(dates1, Valid=[1 2 4]);
array2 = tc.ArrowArrayConstructorFcn(dates1, Valid=[1 4]);
array3 = tc.ArrowArrayConstructorFcn(dates2, Valid=[1 2 4]);
array4 = arrow.array([true false true false]);
array5 = tc.ArrowArrayConstructorFcn(dates3, Valid=[1 2 4]);
% Their validity bitmaps are not equal
tc.verifyFalse(isequal(array1, array2));
% Not all corresponding valid elements are equal
tc.verifyFalse(isequal(array1, array3));
% Their Type properties are not equal
tc.verifyFalse(isequal(array1, array4));
% Their NumElements properties are not equal
tc.verifyFalse(isequal(array1, array5));
% Comparing an arrow.array.Array to a MATLAB double
tc.verifyFalse(isequal(array1, 1));
% Test supplying more than two arrays to isequal
tc.verifyFalse(isequal(array1, array1, array3, array4, array5));
end
function TestIsEqualFalseTimeZoneMismatch(tc)
% Verify two TimestampArrays are not considered equal if one
% has a TimeZone and one does not.
dates1 = datetime(2023, 6, 22, TimeZone="America/Anchorage") + days(0:4);
dates2 = dates1 - tzoffset(dates1);
dates2.TimeZone = '';
array1 = tc.ArrowArrayConstructorFcn(dates1);
array2 = tc.ArrowArrayConstructorFcn(dates2);
% arrays are not equal
tc.verifyFalse(isequal(array1, array2));
end
function TestIsEqualSameInstantDifferentTimeZone(tc)
% Verify two TimestampArrays are not considered equal if
% they represent the same "instant in time", but have different
% TimeZone values.
dates1 = datetime(2023, 6, 22, TimeZone="America/Anchorage") + days(0:4);
dates2 = dates1;
dates2.TimeZone = "America/New_York";
array1 = tc.ArrowArrayConstructorFcn(dates1);
array2 = tc.ArrowArrayConstructorFcn(dates2);
% arrays are not equal
tc.verifyFalse(isequal(array1, array2));
end
function TestIsEqualFalseTimeUnitMismatch(tc, TimeZone)
% Verify two TimestampArrays are not considered equal if their
% TimeUnit values differ.
dates1 = datetime(2023, 6, 22, TimeZone=TimeZone) + days(0:4);
array1 = tc.ArrowArrayConstructorFcn(dates1, TimeUnit="Millisecond");
array2 = tc.ArrowArrayConstructorFcn(dates1, TimeUnit="Microsecond");
tc.verifyFalse(isequal(array1, array2));
end
end
methods
function verifyTimestampType(testCase, type, timeUnit, timeZone)
testCase.verifyTrue(isa(type, "arrow.type.TimestampType"));
testCase.verifyEqual(type.TimeUnit, timeUnit);
testCase.verifyEqual(type.TimeZone, timeZone);
end
end
end
function fill = getFillValue(timezone)
fill = datetime(1970, 1, 1, TimeZone=timezone);
offset = tzoffset(fill);
if ~isnan(offset)
fill = fill + offset;
end
end
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