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%TTABLEVALIDATOR Unit tests for arrow.array.internal.list.TableValidator
% 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 tTableValidator < matlab.unittest.TestCase
properties (Constant)
BaseTable = table(1, "A", datetime(2023, 11, 1, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
end
methods(Test)
function Smoke(testCase)
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
testCase.verifyInstanceOf(validator, "arrow.array.internal.list.TableValidator");
end
function TableWithZeroVariablesError(testCase)
% Verify the TableValidator constructor throws an exception
% whose identifier is "arrow:array:list:TableWithZeroVariables"
% if provided a table with zero variables.
import arrow.array.internal.list.TableValidator
fcn = @() TableValidator(table);
testCase.verifyError(fcn, "arrow:array:list:TableWithZeroVariables");
end
function VariableNamesGetter(testCase)
% Verify the VariableNames property getter returns the
% expected string array.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
testCase.verifyEqual(validator.VariableNames, ["Number", "Letter", "Date"]);
end
function VariableNamesNoSetter(testCase)
% Verify the VariableNames property is not settable.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
fcn = @() setfield(validator, "VariableNames", ["A", "B", "C"]);
testCase.verifyError(fcn, "MATLAB:class:SetProhibited");
end
function VariableValidatorsGetter(testCase)
% Verify the VariableValidators getter returns the expected
% arrow.array.internal.list.Validator array.
import arrow.array.internal.list.TableValidator
import arrow.array.internal.list.DatetimeValidator
import arrow.array.internal.list.ClassTypeValidator
validator = TableValidator(testCase.BaseTable);
numberVariableValidator = ClassTypeValidator(1);
letterVariableValidator = ClassTypeValidator("A");
datetimeVariableValidator = DatetimeValidator(datetime(2023, 10, 31, TimeZone="UTC"));
expectedValidators = [numberVariableValidator letterVariableValidator datetimeVariableValidator];
testCase.verifyEqual(validator.VariableValidators, expectedValidators);
end
function VariableValidatorsNoSetter(testCase)
% Verify the VariableValidators property is not settable.
import arrow.array.internal.list.TableValidator
import arrow.array.internal.list.ClassTypeValidator
validator = TableValidator(testCase.BaseTable);
numberVariableValidator = ClassTypeValidator(1);
fcn = @() setfield(validator, "VariableValidators", numberVariableValidator);
testCase.verifyError(fcn, "MATLAB:class:SetProhibited");
end
function ClassNameGetter(testCase)
% Verify the ClassName getter returns the expected scalar
% string.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
testCase.verifyEqual(validator.ClassName, "table");
end
function ClassNameNoSetter(testCase)
% Verify the ClassName property is not settable.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
fcn = @() setfield(validator, "ClassName", "string");
testCase.verifyError(fcn, "MATLAB:class:SetProhibited");
end
function ValidateElementClassTypeMismatchError(testCase)
% Verify validateElement throws an exception whose identifier
% is "arrow:array:list:ClassTypeMismatch" if the input is
% not a table.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
errorID = "arrow:array:list:ClassTypeMismatch";
fcn = @() validator.validateElement(1);
testCase.verifyError(fcn, errorID);
fcn = @() validator.validateElement(seconds(1));
testCase.verifyError(fcn, errorID);
end
function ValidateElementNumVariablesMismatchError(testCase)
% Verify validateElement throws an exception whose identifier
% is "arrow:array:list:NumVariablesMismatch" if the input table
% does not have the expected number of variables.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
errorID = "arrow:array:list:NumVariablesMismatch";
inputTable = table(1, "A", VariableNames=["Number", "Letter"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, errorID);
inputTable = table(1, "A", datetime(2023, 10, 30, TimeZone="UTC"), seconds(1), ...
VariableNames=["Number", "Letter", "Date", "Time"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, errorID);
end
function ValidateElementVariableNamesMismatchError(testCase)
% Verify validateElement throws an exception whose identifier
% is "arrow:array:list:NumVariablesMismatch" if the input table
% does not have the expected variable names of variables.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
errorID = "arrow:array:list:VariableNamesMismatch";
inputTable = table(1, "A", datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["A", "B", "C"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, errorID);
end
function ValidateElementErrorFromFirstVariable(testCase)
% Verify validateElement throws an exception if there is an
% issue with the first variable in the input table.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
% validator expects the second variable to be a double
inputTable = table(true, "A", datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:ClassTypeMismatch");
% validator expects all table variables that are not tables
% themselves to be columnar or empty
nonColumnar = [1 2 3 4];
inputTable = table(nonColumnar, "B", datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:NonTabularVariablesMustBeColumnar");
end
function ValidateElementErrorFromSecondVariable(testCase)
% Verify validateElement throws an exception if there is an
% issue with the second variable in the input table.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
% validator expects the second variable to be a string
inputTable = table(2, seconds(1), datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:ClassTypeMismatch");
% validator expects all table variables that are not tables
% themselves to be columnar or empty
nonColumnar = ["A" "B"];
inputTable = table(2, nonColumnar, datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:NonTabularVariablesMustBeColumnar");
end
function ValidateElementErrorFromThirdVariable(testCase)
% Verify validateElement throws an exception if there is an
% issue with the third variable in the input table.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
% validator expects the third variable to be a zoned datetime
inputTable = table(2, "B", datetime(2023, 10, 31), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:ExpectedZonedDatetime");
% validator expects the third variable to be datetime
inputTable = table(2, "B", uint8(1), ...
VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:ClassTypeMismatch");
% validator expects all table variables that are not tables
% themselves to be columnar or empty
nonColumnar = datetime(2023, 10, 31, TimeZone="UTC") + days(0:4);
inputTable = table(2, "B", nonColumnar, VariableNames=["Number", "Letter", "Date"]);
fcn = @() validator.validateElement(inputTable);
testCase.verifyError(fcn, "arrow:array:list:NonTabularVariablesMustBeColumnar");
end
function validateElementNoThrow(testCase)
% Verify validateElement does not throw an exception if the
% input provided matches the expected schema.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
inputTable = table(2, "B", datetime(2023, 10, 31, TimeZone="UTC"), ...
VariableNames=["Number", "Letter", "Date"]);
validator.validateElement(inputTable);
inputTable = repmat(inputTable, [10 1]);
validator.validateElement(inputTable);
% Create a 0x3 table
inputTable = inputTable(1:0, :);
validator.validateElement(inputTable);
end
function validateElementNestedTableVariable(testCase) %#ok<MANU>
% Verify table variables that are tables themselves do not have
% to be columnar, i.e. can have more than one variable.
import arrow.array.internal.list.TableValidator
baseTable = table(1, seconds(1), table("A", false));
validator = TableValidator(baseTable);
inputTable = table([1; 2], seconds([3;4]), table(["C"; "D"], [false; false]));
validator.validateElement(inputTable);
end
function GetElementLength(testCase)
% Verify GetElementLength returns the number of rows as the
% length of the element.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
length = validator.getElementLength(testCase.BaseTable);
testCase.verifyEqual(length, 1);
length = validator.getElementLength(repmat(testCase.BaseTable, [12 1]));
testCase.verifyEqual(length, 12);
length = validator.getElementLength(testCase.BaseTable(1:0, :));
testCase.verifyEqual(length, 0);
end
function ReshapeCellElements(testCase)
% Verify reshapeCellElements is a no-op. It should return the
% original cell array unchanged.
import arrow.array.internal.list.TableValidator
validator = TableValidator(testCase.BaseTable);
COriginal = {testCase.BaseTable, repmat(testCase.BaseTable, [10 1]), testCase.BaseTable(1:0, :)};
CActual = validator.reshapeCellElements(COriginal);
testCase.verifyEqual(COriginal, CActual);
end
end
end
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