ResearchKit/ResearchKitTests/ORKTextChoiceCellGroupTests.m

/*
 Copyright (c) 2015, Apple Inc. All rights reserved.
 Copyright (c) 2015, Bruce Duncan.
 
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 are permitted provided that the following conditions are met:
 
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 may be used to endorse or promote products derived from this software without
 specific prior written permission. No license is granted to the trademarks of
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 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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@import XCTest;
@import ResearchKit.Private;

#import "ORKChoiceViewCell.h"
#import "ORKTextChoiceCellGroup.h"
#import "ORKAnswerTextView.h"

@interface ORKTextChoiceCellGroupTests : XCTestCase

@end


@implementation ORKTextChoiceCellGroupTests

- (NSArray *)textChoices {
    static NSArray *choices = nil;
    
    if (choices == nil) {
        choices = @[[ORKTextChoice choiceWithText:@"choice 01" value:@"c1"],
                    [ORKTextChoice choiceWithText:@"choice 02" value:@"c2"],
                    [ORKTextChoice choiceWithText:@"choice 03" value:@"c3"],
                    [ORKTextChoice choiceWithText:@"choice 04" value:@"c4"]];
    }
    
    return choices;
}

- (NSArray *)textChoicesOther {
    ORKTextChoiceOther *textChoiceOtherOne = [[ORKTextChoiceOther alloc] initWithText:@"Text Choice Other One" primaryTextAttributedString:nil detailText:nil detailTextAttributedString:nil value:@"one" exclusive:true textViewPlaceholderText:@"Please describe." textViewInputOptional:YES textViewStartsHidden:YES];
    ORKTextChoiceOther *textChoiceOtherTwo = [[ORKTextChoiceOther alloc] initWithText:@"Text Choice Other Two" primaryTextAttributedString:nil detailText:nil detailTextAttributedString:nil value:@"two" exclusive:true textViewPlaceholderText:@"" textViewInputOptional:YES textViewStartsHidden:NO];
    ORKTextChoiceOther *textChoiceOtherThree = [[ORKTextChoiceOther alloc] initWithText:@"Text Choice Other Three" primaryTextAttributedString:nil detailText:nil detailTextAttributedString:nil value:@"three" exclusive:true textViewPlaceholderText:@"Please describe." textViewInputOptional:NO textViewStartsHidden:YES];
    ORKTextChoiceOther *textChoiceOtherFour = [[ORKTextChoiceOther alloc] initWithText:nil primaryTextAttributedString:nil detailText:@"Text Choice Other Four"  detailTextAttributedString:nil value:@"four" exclusive:true textViewPlaceholderText:@"Please describe." textViewInputOptional:NO textViewStartsHidden:NO];
    
    static NSArray *choicesOther = nil;
    if (choicesOther == nil) {
        choicesOther = @[textChoiceOtherOne, textChoiceOtherTwo, textChoiceOtherThree, textChoiceOtherFour];
    }
    return choicesOther;
}

- (NSArray *)textChoicesWithOneExclusive {
    static NSArray *choicesWithOneExclusive = nil;
    
    if (choicesWithOneExclusive == nil) {
        choicesWithOneExclusive = @[[ORKTextChoice choiceWithText:@"choice 01" value:@"c1"],
                                    [ORKTextChoice choiceWithText:@"choice 02" detailText:nil value:@"c2" exclusive:YES],
                                [ORKTextChoice choiceWithText:@"choice 03" value:@"c3"],
                                [ORKTextChoice choiceWithText:@"choice 04" value:@"c4"]];
    }
    
    return choicesWithOneExclusive;
}

- (NSArray *)textChoicesWithTwoExclusives {
    static NSArray *choicesWithTwoExclusives = nil;
    
    if (choicesWithTwoExclusives == nil) {
        choicesWithTwoExclusives = @[[ORKTextChoice choiceWithText:@"choice 01" value:@"c1"],
                                 [ORKTextChoice choiceWithText:@"choice 02" detailText:nil value:@"c2" exclusive:YES],
                                 [ORKTextChoice choiceWithText:@"choice 03" detailText:nil value:@"c3" exclusive:YES],
                                 [ORKTextChoice choiceWithText:@"choice 04" value:@"c4"]];
    }
    
    return choicesWithTwoExclusives;
}

- (NSArray *)textChoicesWithAllExclusives {
    static NSArray *choicesWithAllExclusives = nil;
    
    if (choicesWithAllExclusives == nil) {
        choicesWithAllExclusives = @[[ORKTextChoice choiceWithText:@"choice 01" detailText:nil value:@"c1" exclusive:YES],
                                 [ORKTextChoice choiceWithText:@"choice 02" detailText:nil value:@"c2" exclusive:YES],
                                 [ORKTextChoice choiceWithText:@"choice 03" detailText:nil value:@"c3" exclusive:YES],
                                 [ORKTextChoice choiceWithText:@"choice 04" detailText:nil value:@"c4" exclusive:YES]];
    }
    
    return choicesWithAllExclusives;
}

- (void)testSingleChoice {
    NSArray *choices = [self textChoices];
    ORKTextChoiceAnswerFormat *answerFormat = [ORKTextChoiceAnswerFormat choiceAnswerFormatWithStyle:ORKChoiceAnswerStyleSingleChoice textChoices:choices];
    [self testSingleChoice:answerFormat choices:choices];
}

- (void)testSingleChoice:(ORKTextChoiceAnswerFormat *)answerFormat choices:(NSArray *)choices {
    
    ORKTextChoiceCellGroup *group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                                            answer:nil
                                                                                beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                                               immediateNavigation:YES];
    
    // Basic check
    XCTAssertEqual(group.size, choices.count, @"");
    XCTAssertEqualObjects(group.answer, nil, @"");
    XCTAssertEqualObjects(group.answerForBoolean, nil, @"");
    
    // Test containsIndexPath
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:1]], @"");
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:choices.count inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:choices.count-1 inSection:0]], @"");
    
    // Test cell generation
    NSUInteger index = 0;
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertNotNil(cell, @"");
        XCTAssertEqualObjects(cell.reuseIdentifier, @"abc", @"");
        XCTAssertEqual(cell.immediateNavigation, YES, @"");
    }
    
    ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
    XCTAssertNil(cell, @"");
    
    // Regenerate cell group
    group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                    answer:nil
                                                        beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                       immediateNavigation:YES];
    
    // Test cell selection
    for ( index = 0 ; index < group.size; index++) {
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, 1);

        ORKTextChoice *choice = choices[index];
        id value = choice.value;
        
        if (value == nil) {
            value = @(index);
        }
        
        XCTAssertEqualObjects(answerArray.firstObject, value, @"%@ vs %@", answerArray.firstObject, value );
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual( cell.isCellSelected, YES);
    }
    
    // Test cell deselection (ORKChoiceAnswerStyleSingleChoice: selected cell should not deselect if chosen again)
    [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:group.size-1 inSection:0]];
    
    id answer = group.answer;
    XCTAssert([answer isKindOfClass:[NSArray class]]);
    NSArray *answerArray = answer;
    XCTAssertEqual(answerArray.count, 1);
    
    // Test set nil/null answer
    [group setAnswer:nil];
    answer = group.answer;
    XCTAssertNil(answer);
    answerArray = answer;
    XCTAssertEqual(answerArray.count, 0);
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(cell.isCellSelected, NO);
    }
    [group setAnswer:ORKNullAnswerValue()];
    XCTAssertEqual(answerArray.count, 0);
    
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual( cell.isCellSelected, NO);
    }
    
    // Test set answer
    for ( index = 0 ; index < group.size; index++) {
        ORKTextChoice *choice = choices[index];
        id value = choice.value;
        
        if (value == nil) {
            value = @(index);
        }
        
        [group setAnswer:@[value]];
        
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, 1);
       
        XCTAssertEqualObjects(answerArray.firstObject, value, @"%@ vs %@", answerArray.firstObject, value );
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertTrue( cell.isCellSelected );
    }
}

- (void)testMultiChoice {
    ORKTextChoiceAnswerFormat *answerFormat = [ORKTextChoiceAnswerFormat choiceAnswerFormatWithStyle:ORKChoiceAnswerStyleMultipleChoice textChoices:[self textChoices]];
    
    ORKTextChoiceCellGroup *group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                                            answer:nil
                                                                                beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                                               immediateNavigation:NO];
    
    // Test basics
    XCTAssertEqual(group.size, [self textChoices].count, @"");
    XCTAssertEqualObjects(group.answer, nil, @"");
    XCTAssertEqualObjects(group.answerForBoolean, nil, @"");
    
    // Test containsIndexPath
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:1]], @"");
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:[self textChoices].count inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:[self textChoices].count-1 inSection:0]], @"");
    
    // Test cell generation
    NSUInteger index = 0;
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertNotNil(cell, @"");
        XCTAssertEqualObjects(cell.reuseIdentifier, @"abc", @"");
        XCTAssertEqual( cell.immediateNavigation, NO, @"");
    }
    
    // Test cell generation with invalid indexPath
    ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
    XCTAssertNil(cell, @"");
    
    // Regenerate cellGroup
    group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                    answer:nil
                                                        beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                       immediateNavigation:NO];
    
    // Test cell selection
    for ( index = 0 ; index < group.size; index++) {
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, index+1);
        
        ORKTextChoice *choice = [self textChoices][index];
        id value = choice.value;
        
        if (value == nil) {
            value = @(index);
        }
        
        XCTAssertEqualObjects(answerArray.lastObject, value, @"%@ vs %@", answerArray.lastObject, value );
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual( cell.isCellSelected, YES);
    }
    
    // Test cell deselection
    for ( index = 0 ; index < group.size; index++) {
        
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
        id answer = group.answer;
        if (index < group.size - 1) {
            XCTAssert([answer isKindOfClass:[NSArray class]]);
            NSArray *answerArray = answer;
            XCTAssertEqual(answerArray.count, group.size - index -1);
        } else {
            // Answer becomes NSNull when all cells are deselected
            XCTAssert(answer == ORKNullAnswerValue());
        }
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual( cell.isCellSelected, NO);
    }
    
    XCTAssert(group.answer == ORKNullAnswerValue());

    // Select all cells again
    for ( index = 0 ; index < group.size; index++) {
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
    }
    
    NSArray *answerArray = group.answer;
    XCTAssertEqual(answerArray.count, group.size);
    
    // Test set nil/null answer
    [group setAnswer:nil];
    XCTAssertNil(group.answer);
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssert( cell.cellSelected == NO);
    }

    // Select all cells again
    for ( index = 0 ; index < group.size; index++) {
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
    }
    
    answerArray = group.answer;
    XCTAssertEqual(answerArray.count, group.size);

    [group setAnswer:ORKNullAnswerValue()];
    XCTAssert(group.answer == ORKNullAnswerValue());
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(cell.isCellSelected, NO);
    }

    // Test set answers
    NSMutableArray *answers = [NSMutableArray new];
    for ( index = 0 ; index < group.size; index++) {
        ORKTextChoice *choice = [self textChoices][index];
        id value = choice.value;
        
        if (value == nil) {
            value = @(index);
        }
        
        [answers addObject:value];
        
        [group setAnswer:answers];
        
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, index + 1);
        
        XCTAssertEqualObjects(answerArray.lastObject, value, @"%@ vs %@", answerArray.lastObject, value );
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertTrue( cell.isCellSelected );
    }
}

- (void)testMultiChoiceWithOneExclusive {
    [self testMultiChoiceWithExclusives:[self textChoicesWithOneExclusive]];
}

- (void)testMultiChoiceWithTwoExclusives {
    [self testMultiChoiceWithExclusives:[self textChoicesWithTwoExclusives]];
}

- (void)testMultiChoiceWithExclusives:(NSArray *)choices {
    ORKTextChoiceAnswerFormat *answerFormat = [ORKTextChoiceAnswerFormat choiceAnswerFormatWithStyle:ORKChoiceAnswerStyleMultipleChoice textChoices:choices];
    
    ORKTextChoiceCellGroup *group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                                            answer:nil
                                                                                beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                                               immediateNavigation:NO];
    
    // Test basics
    XCTAssertEqual(group.size, choices.count, @"");
    XCTAssertEqualObjects(group.answer, nil, @"");
    XCTAssertEqualObjects(group.answerForBoolean, nil, @"");
    
    // Test containsIndexPath
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:1]], @"");
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:choices.count inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:choices.count-1 inSection:0]], @"");
    
    // Test cell generation
    NSUInteger index = 0;
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertNotNil(cell, @"");
        XCTAssertEqualObjects(cell.reuseIdentifier, @"abc", @"");
        XCTAssertEqual( cell.immediateNavigation, NO, @"");
    }
    
    // Test cell generation with invalid indexPath
    ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
    XCTAssertNil(cell, @"");
    
    // Regenerate cellGroup
    group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                    answer:nil
                                                        beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                       immediateNavigation:NO];
    
    // Get the indexes of the exclusive and non-exclusive choices
    NSMutableArray *exclusiveIndexes = [[NSMutableArray alloc] init];
    NSMutableArray *nonExclusiveIndexes = [[NSMutableArray alloc] init];
    for (index = 0 ; index < group.size; index++) {
        ORKTextChoice *choice = choices[index];
        if (choice.exclusive) {
            [exclusiveIndexes addObject:@(index)];
        } else {
            [nonExclusiveIndexes addObject:@(index)];
        }
    }
    
    // Test cell selection.  First select all the non-exclusive choices, then do one exclusive
    NSUInteger exclusiveIndexI = 0;
    for (exclusiveIndexI = 0 ; exclusiveIndexI < exclusiveIndexes.count; exclusiveIndexI++) {
        NSUInteger exclusiveIndex = ((NSNumber *)exclusiveIndexes[exclusiveIndexI]).unsignedIntegerValue;
        
        // Select all the non-exclusive choices, confirming the answer is including them all
        NSUInteger nonExclusiveIndexI = 0;
        for ( nonExclusiveIndexI = 0 ; nonExclusiveIndexI < nonExclusiveIndexes.count; nonExclusiveIndexI++) {
            NSUInteger index = ((NSNumber *)nonExclusiveIndexes[nonExclusiveIndexI]).unsignedIntegerValue;
            ORKTextChoice *choice = choices[index];
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
            id answer = group.answer;
            XCTAssert([answer isKindOfClass:[NSArray class]]);
            NSArray *answerArray = answer;
            XCTAssertEqual(answerArray.count, nonExclusiveIndexI+1);
            
            id value = choice.value;
            
            if (value == nil) {
                value = @(index);
            }
            
            XCTAssertEqualObjects(answerArray.lastObject, value, @"%@ vs %@", answerArray.lastObject, value );
            
            ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual( cell.isCellSelected, YES);
        }
        // Now, Select the exclusive choice, which should unselect all the non-exclusive choices chosen
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0]];
        id exclusiveAnswer = group.answer;
        XCTAssert([exclusiveAnswer isKindOfClass:[NSArray class]]);
        NSArray *exclusiveAnswerArray = exclusiveAnswer;
        XCTAssertEqual(exclusiveAnswerArray.count, 1);
        ORKChoiceViewCell *exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(exclusiveCell.isCellSelected, YES);
    
        // Test cell deselection.  First deselect the exclusive, and confirm no choices are selected
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0]];
        exclusiveAnswer = group.answer;
        XCTAssert(exclusiveAnswer == ORKNullAnswerValue());
        exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(exclusiveCell.isCellSelected, NO);
        
        // Now, select the exclusive choice again, and then select a non-exclusive choice, which
        // should deselect the exclusive choice
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0]];
        exclusiveAnswer = group.answer;
        XCTAssert([exclusiveAnswer isKindOfClass:[NSArray class]]);
        exclusiveAnswerArray = exclusiveAnswer;
        XCTAssertEqual(exclusiveAnswerArray.count, 1);
        exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(exclusiveCell.isCellSelected, YES);
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:((NSNumber *)nonExclusiveIndexes[0]).unsignedIntegerValue inSection:0]];
        exclusiveAnswer = group.answer;
        XCTAssert([exclusiveAnswer isKindOfClass:[NSArray class]]);
        exclusiveAnswerArray = exclusiveAnswer;
        XCTAssertEqual(exclusiveAnswerArray.count, 1);
        ORKChoiceViewCell *nonExclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:((NSNumber *)nonExclusiveIndexes[0]).unsignedIntegerValue inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(nonExclusiveCell.isCellSelected, YES);
        exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(exclusiveCell.isCellSelected, NO);

        // Deselect the non-exclusive to reset for the next test
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:((NSNumber *)nonExclusiveIndexes[0]).unsignedIntegerValue inSection:0]];
        
        // If there are more than one exclusive choice, try selecting the current exclusive choice, and then
        // selecting another exclusive choice, which should deselect the first
        if (exclusiveIndexes.count > 1) {
            NSUInteger otherExclusiveIndex = ((NSNumber *)exclusiveIndexes[(exclusiveIndexI+1)%exclusiveIndexes.count]).unsignedIntegerValue;
            
            // Select the current exclusive choice and confirm its selected
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0]];
            exclusiveAnswer = group.answer;
            XCTAssert([exclusiveAnswer isKindOfClass:[NSArray class]]);
            exclusiveAnswerArray = exclusiveAnswer;
            XCTAssertEqual(exclusiveAnswerArray.count, 1);
            exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual(exclusiveCell.isCellSelected, YES);

            // Select the other exclusive choice and confirm its selected, and the previously selected exclusive
            // choice is no longer selected
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:otherExclusiveIndex inSection:0]];
            exclusiveAnswer = group.answer;
            XCTAssert([exclusiveAnswer isKindOfClass:[NSArray class]]);
            exclusiveAnswerArray = exclusiveAnswer;
            XCTAssertEqual(exclusiveAnswerArray.count, 1);
            exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:otherExclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual(exclusiveCell.isCellSelected, YES);
            exclusiveCell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:exclusiveIndex inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual(exclusiveCell.isCellSelected, NO);

            // Deselect the other exclusive choice to reset for the next test
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:otherExclusiveIndex inSection:0]];
        }
        
        // Now select all the non-exclusive choices
        for (nonExclusiveIndexI = 0 ; nonExclusiveIndexI < nonExclusiveIndexes.count; nonExclusiveIndexI++) {
            NSUInteger index = ((NSNumber *)nonExclusiveIndexes[nonExclusiveIndexI]).unsignedIntegerValue;
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
            ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual( cell.isCellSelected, YES);
        }
        XCTAssertEqual(((NSArray *)group.answer).count, nonExclusiveIndexes.count);
        
        // Now, deselect all the non-exclusive choices one at a time
        for (nonExclusiveIndexI = 0 ; nonExclusiveIndexI < nonExclusiveIndexes.count; nonExclusiveIndexI++) {
            NSUInteger index = ((NSNumber *)nonExclusiveIndexes[nonExclusiveIndexI]).unsignedIntegerValue;
            [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
            id answer = group.answer;
            if (nonExclusiveIndexI < nonExclusiveIndexes.count - 1) {
                XCTAssert([answer isKindOfClass:[NSArray class]]);
                NSArray *answerArray = answer;
                XCTAssertEqual(answerArray.count, nonExclusiveIndexes.count - nonExclusiveIndexI - 1);
            } else {
                // Answer becomes NSNull when there are no selected cells
                XCTAssert(answer == ORKNullAnswerValue());
            }
            
            ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
            XCTAssertEqual( cell.isCellSelected, NO);
        }
        
        id answer = group.answer;
        XCTAssert(answer == ORKNullAnswerValue());
    }
    
    // Test set nil/null answer
    [group setAnswer:nil];
    id answer = group.answer;
    XCTAssertNil(answer);
    NSArray *answerArray = answer;
    XCTAssertEqual(answerArray.count, 0);
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssert(cell.cellSelected == NO);
    }
    [group setAnswer:ORKNullAnswerValue()];
    XCTAssertEqual(answerArray.count, 0);

    for (index = 0 ; index < group.size; index++) {
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertEqual(cell.isCellSelected, NO);
    }

    // Test set answers
    NSMutableArray *answers = [NSMutableArray new];
    for (index = 0 ; index < group.size; index++) {
        ORKTextChoice *choice = choices[index];
        id value = choice.value;
        
        if (value == nil) {
            value = @(index);
        }
        
        [answers addObject:value];
        
        [group setAnswer:answers];
        
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, index + 1);
        
        
        XCTAssertEqualObjects(answerArray.lastObject, value, @"%@ vs %@", answerArray.lastObject, value );
        
        ORKChoiceViewCell *cell = [group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        XCTAssertTrue(cell.isCellSelected );
    }
}

- (void)testMultiChoiceWithAllExclusives {
    // All exclusives should behave exactly like single choice mode, so use that test method
    NSArray *choices = [self textChoicesWithAllExclusives];
    ORKTextChoiceAnswerFormat *answerFormat = [ORKTextChoiceAnswerFormat choiceAnswerFormatWithStyle:ORKChoiceAnswerStyleSingleChoice textChoices:choices];
    [self testSingleChoice:answerFormat choices:choices];
}

- (void)testTextChoiceOthers {
    NSArray<ORKTextChoiceOther *> *choices = [self textChoicesOther];
    ORKTextChoiceAnswerFormat *answerFormat = [ORKAnswerFormat choiceAnswerFormatWithStyle:ORKChoiceAnswerStyleSingleChoice textChoices:choices];
    ORKTextChoiceCellGroup *group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                                            answer:nil
                                                                                beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                                               immediateNavigation:YES];
    
    // Test basics
    XCTAssertEqual(group.size, [self textChoices].count, @"");
    XCTAssertEqualObjects(group.answer, nil, @"");
    XCTAssertEqualObjects(group.answerForBoolean, nil, @"");
    
    // Test containsIndexPath
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:1]], @"");
    XCTAssertFalse([group containsIndexPath:[NSIndexPath indexPathForRow:[self textChoices].count inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]], @"");
    XCTAssertTrue([group containsIndexPath:[NSIndexPath indexPathForRow:[self textChoices].count-1 inSection:0]], @"");
    
    // Test cell generation
    NSUInteger index = 0;
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceOtherViewCell *cell = (ORKChoiceOtherViewCell *)[group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        ORKTextChoiceOther *choice = choices[index];
        XCTAssertNotNil(cell, @"");
        XCTAssertEqualObjects(cell.reuseIdentifier, @"abc", @"");
        XCTAssertEqual(cell.immediateNavigation, YES, @"");

        if (choice.textViewStartsHidden) {
            XCTAssertTrue(cell.textView.isHidden);
        }
        else {
            XCTAssertFalse(cell.textView.isHidden);
        }
        XCTAssertEqual(choice.textViewPlaceholderText, cell.textView.placeholder);
    }
    
    ORKChoiceOtherViewCell *cell = (ORKChoiceOtherViewCell *)[group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
    XCTAssertNil(cell, @"");
    
    // Regenerate cell group
    group = [[ORKTextChoiceCellGroup alloc] initWithTextChoiceAnswerFormat:answerFormat
                                                                    answer:nil
                                                        beginningIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                                                       immediateNavigation:YES];
    
    // Test cell selection
    for ( index = 0 ; index < group.size; index++) {
        ORKChoiceOtherViewCell *cell = (ORKChoiceOtherViewCell *)[group cellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0] withReuseIdentifier:@"abc"];
        ORKTextChoiceOther *choice = choices[index];
        [group didSelectCellAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
        id answer = group.answer;
        XCTAssert([answer isKindOfClass:[NSArray class]]);
        NSArray *answerArray = answer;
        XCTAssertEqual(answerArray.count, 1);
        XCTAssertEqual(cell.isCellSelected, (choice.textViewInputOptional || cell.textView.text.length > 0));
    }
}

@end