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#import <XCTest/XCTest.h>
#import <string>
#import "NSExpression+MGLAdditions.h"
@interface MGLExpressionTests : XCTestCase
@end
@implementation MGLExpressionTests
#pragma mark - Utility
- (NSComparisonPredicate *)equalityComparisonPredicateWithRightConstantValue:(id)rightConstantValue
{
NSComparisonPredicate *predicate = [NSComparisonPredicate
predicateWithLeftExpression:[NSExpression expressionForKeyPath:@"foo"]
rightExpression:[NSExpression expressionForConstantValue:rightConstantValue]
modifier:NSDirectPredicateModifier
type:NSEqualToPredicateOperatorType
options:0];
return predicate;
}
#pragma mark - String Tests
- (void)testExpressionConversionString
{
NSComparisonPredicate *predicate = [self equalityComparisonPredicateWithRightConstantValue:@"bar"];
mbgl::Value convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<std::string>());
XCTAssertEqualObjects(@(convertedValue.get<std::string>().c_str()), @"bar");
}
- (void)testExpressionConversionStringWithUnicode
{
NSComparisonPredicate *predicate = [self equalityComparisonPredicateWithRightConstantValue:@"🆔🆗🇦🇶"];
mbgl::Value convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<std::string>());
XCTAssertEqual(convertedValue.get<std::string>(), "🆔🆗🇦🇶");
}
#pragma mark - Boolean Tests
- (void)testExpressionConversionBooleanTrue
{
NSComparisonPredicate *predicate = [self equalityComparisonPredicateWithRightConstantValue:@YES];
mbgl::Value convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<bool>());
XCTAssertEqual(convertedValue.get<bool>(), true);
}
- (void)testExpressionConversionBooleanFalse
{
NSComparisonPredicate *predicate = [self equalityComparisonPredicateWithRightConstantValue:@NO];
mbgl::Value convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<bool>());
XCTAssertEqual(convertedValue.get<bool>(), false);
}
#pragma mark - Floating Point Tests
- (void)testExpressionConversionDouble
{
NSComparisonPredicate *predicate;
mbgl::Value convertedValue;
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithDouble:DBL_MIN]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqual(convertedValue.get<double>(), DBL_MIN);
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithDouble:DBL_MAX]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqual(convertedValue.get<double>(), DBL_MAX);
}
- (void)testExpressionConversionFloat
{
// Because we can't guarantee precision when using float, and because
// we warn the user to this effect in -[NSExpression mgl_constantMBGLValue],
// we just check that things are in the ballpark here with integer values
// and some lower-precision checks.
NSComparisonPredicate *predicate;
mbgl::Value convertedValue;
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithFloat:-1]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqual(convertedValue.get<double>(), -1);
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithFloat:1]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqual(convertedValue.get<double>(), 1);
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithFloat:-23.232342]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqualWithAccuracy(convertedValue.get<double>(), -23.232342, 0.000001);
predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNumber numberWithFloat:23.232342]];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<double>());
XCTAssertEqualWithAccuracy(convertedValue.get<double>(), 23.232342, 0.000001);
}
#pragma mark - Integer Tests
- (void)testExpressionNegativeIntegers
{
NSComparisonPredicate *predicate;
mbgl::Value convertedValue;
NSArray<NSNumber *> *minValues = @[
[NSNumber numberWithShort: SHRT_MIN],
[NSNumber numberWithInt: INT_MIN],
[NSNumber numberWithLong: LONG_MIN],
[NSNumber numberWithLongLong: LLONG_MIN],
[NSNumber numberWithInteger: NSIntegerMin]
];
NSArray<NSNumber *> *maxValues = @[
[NSNumber numberWithShort: SHRT_MAX],
[NSNumber numberWithInt: INT_MAX],
[NSNumber numberWithLong: LONG_MAX],
[NSNumber numberWithLongLong: LLONG_MAX],
[NSNumber numberWithInteger: NSIntegerMax]
];
// Negative integers should always come back as int64_t per mbgl::Value definition.
// We use the long long value because it can store the highest number on both 32-
// and 64-bit and won't overflow.
for (NSNumber *min in minValues)
{
predicate = [self equalityComparisonPredicateWithRightConstantValue:min];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<int64_t>());
XCTAssertEqual(convertedValue.get<int64_t>(), min.longLongValue);
}
// Positive integers should always come back as uint64_t per mbgl::Value definition.
// We use the unsigned long long value because it can store the highest number on
// both 32- and 64-bit and won't overflow.
for (NSNumber *max in maxValues)
{
predicate = [self equalityComparisonPredicateWithRightConstantValue:max];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<uint64_t>());
XCTAssertEqual(convertedValue.get<uint64_t>(), max.unsignedLongLongValue);
}
}
- (void)testExpressionPositiveAndZeroIntegers
{
NSComparisonPredicate *predicate;
mbgl::Value convertedValue;
NSArray<NSNumber *> *minValues = @[
[NSNumber numberWithUnsignedShort: 0],
[NSNumber numberWithUnsignedInt: 0],
[NSNumber numberWithUnsignedLong: 0],
[NSNumber numberWithUnsignedLongLong: 0],
[NSNumber numberWithUnsignedInteger: 0]
];
NSArray<NSNumber *> *maxValues = @[
[NSNumber numberWithUnsignedShort: USHRT_MAX],
[NSNumber numberWithUnsignedInt: UINT_MAX],
[NSNumber numberWithUnsignedLong: ULONG_MAX],
[NSNumber numberWithUnsignedLongLong: ULLONG_MAX],
[NSNumber numberWithUnsignedInteger: NSUIntegerMax]
];
// Zero-value integers should always come back as uint64_t per mbgl::Value definition
// (using the interpretation that zero is not negative). We use the unsigned long long
// value just for parity with the positive integer test.
for (NSNumber *min in minValues)
{
predicate = [self equalityComparisonPredicateWithRightConstantValue:min];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<uint64_t>());
XCTAssertEqual(convertedValue.get<uint64_t>(), min.unsignedLongLongValue);
}
// Positive integers should always come back as uint64_t per mbgl::Value definition.
// We use the unsigned long long value because it can store the highest number on
// both 32- and 64-bit and won't overflow.
for (NSNumber *max in maxValues)
{
predicate = [self equalityComparisonPredicateWithRightConstantValue:max];
convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<uint64_t>());
XCTAssertEqual(convertedValue.get<uint64_t>(), max.unsignedLongLongValue);
}
}
#pragma mark - Null Tests
- (void)testExpressionConversionNull
{
NSComparisonPredicate *predicate = [self equalityComparisonPredicateWithRightConstantValue:[NSNull null]];
mbgl::Value convertedValue = predicate.rightExpression.mgl_constantMBGLValue;
XCTAssertTrue(convertedValue.is<mbgl::NullValue>());
}
#pragma mark - Feature type tests
- (void)testFeatureType {
XCTAssertEqual([NSExpression expressionWithFormat:@"'Point'"].mgl_featureType, mbgl::FeatureType::Point);
XCTAssertEqual([NSExpression expressionWithFormat:@"'LineString'"].mgl_featureType, mbgl::FeatureType::LineString);
XCTAssertEqual([NSExpression expressionWithFormat:@"'Polygon'"].mgl_featureType, mbgl::FeatureType::Polygon);
XCTAssertEqual([NSExpression expressionWithFormat:@"'Unknown'"].mgl_featureType, mbgl::FeatureType::Unknown);
XCTAssertEqual([NSExpression expressionWithFormat:@"''"].mgl_featureType, mbgl::FeatureType::Unknown);
XCTAssertEqual([NSExpression expressionWithFormat:@"1"].mgl_featureType, mbgl::FeatureType::Point);
XCTAssertEqual([NSExpression expressionWithFormat:@"2"].mgl_featureType, mbgl::FeatureType::LineString);
XCTAssertEqual([NSExpression expressionWithFormat:@"3"].mgl_featureType, mbgl::FeatureType::Polygon);
XCTAssertEqual([NSExpression expressionWithFormat:@"0"].mgl_featureType, mbgl::FeatureType::Unknown);
XCTAssertEqual([NSExpression expressionWithFormat:@"-1"].mgl_featureType, mbgl::FeatureType::Unknown);
XCTAssertEqual([NSExpression expressionWithFormat:@"4"].mgl_featureType, mbgl::FeatureType::Unknown);
XCTAssertEqual([NSExpression expressionWithFormat:@"nil"].mgl_featureType, mbgl::FeatureType::Unknown);
}
@end
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