4 files changed, 377 insertions, 0 deletions
diff --git a/platform/darwin/test/MGLDocumentationExampleTests.swift b/platform/darwin/test/MGLDocumentationExampleTests.swift
index 9bf9924869..5a6e00bc4e 100644
--- a/platform/darwin/test/MGLDocumentationExampleTests.swift
+++ b/platform/darwin/test/MGLDocumentationExampleTests.swift
@@ -230,6 +230,24 @@ class MGLDocumentationExampleTests: XCTestCase, MGLMapViewDelegate {
         
         XCTAssertNotNil(mapView.style?.layer(withIdentifier: "buildings"))
     }
+    
+    func testMGLHeatmapStyleLayer() {
+        let earthquakes = MGLShapeSource(identifier: "earthquakes", url: URL(string: "https://example.com/earthquakes.json")!, options: [:])
+        mapView.style?.addSource(earthquakes)
+        
+        //#-example-code
+        let layer = MGLHeatmapStyleLayer(identifier: "earthquake-heat", source: earthquakes)
+        layer.heatmapWeight = NSExpression(format: "FUNCTION(magnitude, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)",
+                                           [0: 0,
+                                            6: 1])
+        layer.heatmapIntensity = NSExpression(format: "FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)",
+                                              [0: 1,
+                                               9: 3])
+        mapView.style?.addLayer(layer)
+        //#-end-example-code
+        
+        XCTAssertNotNil(mapView.style?.layer(withIdentifier: "earthquake-heat"))
+    }
 
     func testMGLSymbolStyleLayer() {
         let pois = MGLVectorSource(identifier: "pois", configurationURL: URL(string: "https://example.com/style.json")!)
diff --git a/platform/darwin/test/MGLHeatmapColorTests.mm b/platform/darwin/test/MGLHeatmapColorTests.mm
new file mode 100644
index 0000000000..8d44064d94
--- /dev/null
+++ b/platform/darwin/test/MGLHeatmapColorTests.mm
@@ -0,0 +1,61 @@
+#import <Mapbox/Mapbox.h>
+#import <XCTest/XCTest.h>
+
+#import "MGLStyleLayer_Private.h"
+
+#include <mbgl/style/layers/heatmap_layer.hpp>
+
+@interface MGLHeatmapColorTests : XCTestCase <MGLMapViewDelegate>
+@end
+
+@implementation MGLHeatmapColorTests
+
+- (void)testProperties {
+    MGLPointFeature *feature = [[MGLPointFeature alloc] init];
+    MGLShapeSource *source = [[MGLShapeSource alloc] initWithIdentifier:@"sourceID" shape:feature options:nil];
+    MGLHeatmapStyleLayer *layer = [[MGLHeatmapStyleLayer alloc] initWithIdentifier:@"layerID" source:source];
+
+    auto rawLayer = layer.rawLayer->as<mbgl::style::HeatmapLayer>();
+    
+    XCTAssertTrue(rawLayer->getHeatmapColor().isUndefined(),
+                  @"heatmap-color should be unset initially.");
+    NSExpression *defaultExpression = layer.heatmapColor;
+
+    NSExpression *constantExpression = [NSExpression expressionWithFormat:@"%@", [MGLColor redColor]];
+    layer.heatmapColor = constantExpression;
+
+    
+    mbgl::style::PropertyValue<float> propertyValue = { 0xff };
+    XCTAssertEqual(rawLayer->getHeatmapColor().evaluate(0.0), mbgl::Color::red(),
+                   @"Setting heatmapColor to a constant value expression should update heatmap-color.");
+    XCTAssertEqualObjects(layer.heatmapColor, constantExpression,
+                          @"heatmapColor should round-trip constant value expressions.");
+
+    constantExpression = [NSExpression expressionWithFormat:@"%@", [MGLColor redColor]];
+    NSExpression *constantExpression2 = [NSExpression expressionWithFormat:@"%@", [MGLColor blueColor]];
+    NSExpression *functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($heatmapDensity, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@12: constantExpression2}];
+    layer.heatmapColor = functionExpression;
+    
+    XCTAssertEqual(rawLayer->getHeatmapColor().evaluate(11.0), mbgl::Color::red(),
+                   @"Setting heatmapColor to an expression depending on $heatmapDensity should update heatmap-color.");
+    XCTAssertEqual(rawLayer->getHeatmapColor().evaluate(12.0), mbgl::Color::blue(),
+                   @"Setting heatmapColor to an expression depending on $heatmapDensity should update heatmap-color.");
+    XCTAssertEqualObjects(layer.heatmapColor, functionExpression,
+                          @"heatmapColor should round-trip expressions depending on $heatmapDensity.");
+
+    layer.heatmapColor = nil;
+    XCTAssertTrue(rawLayer->getHeatmapColor().isUndefined(),
+                  @"Unsetting heatmapColor should return heatmap-color to the default value.");
+    XCTAssertEqualObjects(layer.heatmapColor, defaultExpression,
+                          @"heatmapColor should return the default value after being unset.");
+
+    functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+    XCTAssertThrowsSpecificNamed(layer.heatmapColor = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera expression is applied to heatmapColor.");
+    functionExpression = [NSExpression expressionForKeyPath:@"bogus"];
+    XCTAssertThrowsSpecificNamed(layer.heatmapColor = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a data expression is applied to heatmapColor.");
+    functionExpression = [NSExpression expressionWithFormat:@"FUNCTION(bogus, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+    functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@10: functionExpression}];
+    XCTAssertThrowsSpecificNamed(layer.heatmapColor = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera-data expression is applied to a property that does not support key paths to feature attributes.");
+}
+
+@end
diff --git a/platform/darwin/test/MGLHeatmapStyleLayerTests.mm b/platform/darwin/test/MGLHeatmapStyleLayerTests.mm
new file mode 100644
index 0000000000..74121affd8
--- /dev/null
+++ b/platform/darwin/test/MGLHeatmapStyleLayerTests.mm
@@ -0,0 +1,296 @@
+// This file is generated.
+// Edit platform/darwin/scripts/generate-style-code.js, then run `make darwin-style-code`.
+
+#import "MGLStyleLayerTests.h"
+#import "../../darwin/src/NSDate+MGLAdditions.h"
+
+#import "MGLStyleLayer_Private.h"
+
+#include <mbgl/style/layers/heatmap_layer.hpp>
+#include <mbgl/style/transition_options.hpp>
+
+@interface MGLHeatmapLayerTests : MGLStyleLayerTests
+@end
+
+@implementation MGLHeatmapLayerTests
+
++ (NSString *)layerType {
+    return @"heatmap";
+}
+
+- (void)testPredicates {
+    MGLPointFeature *feature = [[MGLPointFeature alloc] init];
+    MGLShapeSource *source = [[MGLShapeSource alloc] initWithIdentifier:@"sourceID" shape:feature options:nil];
+    MGLHeatmapStyleLayer *layer = [[MGLHeatmapStyleLayer alloc] initWithIdentifier:@"layerID" source:source];
+
+    XCTAssertNil(layer.sourceLayerIdentifier);
+    layer.sourceLayerIdentifier = @"layerID";
+    XCTAssertEqualObjects(layer.sourceLayerIdentifier, @"layerID");
+    layer.sourceLayerIdentifier = nil;
+    XCTAssertNil(layer.sourceLayerIdentifier);
+
+    XCTAssertNil(layer.predicate);
+    layer.predicate = [NSPredicate predicateWithValue:NO];
+    XCTAssertEqualObjects(layer.predicate, [NSPredicate predicateWithValue:NO]);
+    layer.predicate = nil;
+    XCTAssertNil(layer.predicate);
+}
+
+- (void)testProperties {
+    MGLPointFeature *feature = [[MGLPointFeature alloc] init];
+    MGLShapeSource *source = [[MGLShapeSource alloc] initWithIdentifier:@"sourceID" shape:feature options:nil];
+
+    MGLHeatmapStyleLayer *layer = [[MGLHeatmapStyleLayer alloc] initWithIdentifier:@"layerID" source:source];
+    XCTAssertNotEqual(layer.rawLayer, nullptr);
+    XCTAssertTrue(layer.rawLayer->is<mbgl::style::HeatmapLayer>());
+    auto rawLayer = layer.rawLayer->as<mbgl::style::HeatmapLayer>();
+
+    MGLTransition transitionTest = MGLTransitionMake(5, 4);
+
+
+    // heatmap-intensity
+    {
+        XCTAssertTrue(rawLayer->getHeatmapIntensity().isUndefined(),
+                      @"heatmap-intensity should be unset initially.");
+        NSExpression *defaultExpression = layer.heatmapIntensity;
+
+        NSExpression *constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        layer.heatmapIntensity = constantExpression;
+        mbgl::style::PropertyValue<float> propertyValue = { 0xff };
+        XCTAssertEqual(rawLayer->getHeatmapIntensity(), propertyValue,
+                       @"Setting heatmapIntensity to a constant value expression should update heatmap-intensity.");
+        XCTAssertEqualObjects(layer.heatmapIntensity, constantExpression,
+                              @"heatmapIntensity should round-trip constant value expressions.");
+
+        constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        NSExpression *functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        layer.heatmapIntensity = functionExpression;
+
+        mbgl::style::IntervalStops<float> intervalStops = {{
+            { -INFINITY, 0xff },
+            { 18, 0xff },
+        }};
+        propertyValue = mbgl::style::CameraFunction<float> { intervalStops };
+        
+        XCTAssertEqual(rawLayer->getHeatmapIntensity(), propertyValue,
+                       @"Setting heatmapIntensity to a camera expression should update heatmap-intensity.");
+        XCTAssertEqualObjects(layer.heatmapIntensity, functionExpression,
+                              @"heatmapIntensity should round-trip camera expressions.");
+
+                              
+
+        layer.heatmapIntensity = nil;
+        XCTAssertTrue(rawLayer->getHeatmapIntensity().isUndefined(),
+                      @"Unsetting heatmapIntensity should return heatmap-intensity to the default value.");
+        XCTAssertEqualObjects(layer.heatmapIntensity, defaultExpression,
+                              @"heatmapIntensity should return the default value after being unset.");
+
+        functionExpression = [NSExpression expressionForKeyPath:@"bogus"];
+        XCTAssertThrowsSpecificNamed(layer.heatmapIntensity = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera-data expression is applied to a property that does not support key paths to feature attributes.");
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION(bogus, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@10: functionExpression}];
+        XCTAssertThrowsSpecificNamed(layer.heatmapIntensity = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera-data expression is applied to a property that does not support key paths to feature attributes.");
+        // Transition property test
+        layer.heatmapIntensityTransition = transitionTest;
+        auto toptions = rawLayer->getHeatmapIntensityTransition();
+        XCTAssert(toptions.delay && MGLTimeIntervalFromDuration(*toptions.delay) == transitionTest.delay);
+        XCTAssert(toptions.duration && MGLTimeIntervalFromDuration(*toptions.duration) == transitionTest.duration);
+
+        MGLTransition heatmapIntensityTransition = layer.heatmapIntensityTransition;
+        XCTAssertEqual(heatmapIntensityTransition.delay, transitionTest.delay);
+        XCTAssertEqual(heatmapIntensityTransition.duration, transitionTest.duration);
+    }
+
+    // heatmap-opacity
+    {
+        XCTAssertTrue(rawLayer->getHeatmapOpacity().isUndefined(),
+                      @"heatmap-opacity should be unset initially.");
+        NSExpression *defaultExpression = layer.heatmapOpacity;
+
+        NSExpression *constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        layer.heatmapOpacity = constantExpression;
+        mbgl::style::PropertyValue<float> propertyValue = { 0xff };
+        XCTAssertEqual(rawLayer->getHeatmapOpacity(), propertyValue,
+                       @"Setting heatmapOpacity to a constant value expression should update heatmap-opacity.");
+        XCTAssertEqualObjects(layer.heatmapOpacity, constantExpression,
+                              @"heatmapOpacity should round-trip constant value expressions.");
+
+        constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        NSExpression *functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        layer.heatmapOpacity = functionExpression;
+
+        mbgl::style::IntervalStops<float> intervalStops = {{
+            { -INFINITY, 0xff },
+            { 18, 0xff },
+        }};
+        propertyValue = mbgl::style::CameraFunction<float> { intervalStops };
+        
+        XCTAssertEqual(rawLayer->getHeatmapOpacity(), propertyValue,
+                       @"Setting heatmapOpacity to a camera expression should update heatmap-opacity.");
+        XCTAssertEqualObjects(layer.heatmapOpacity, functionExpression,
+                              @"heatmapOpacity should round-trip camera expressions.");
+
+                              
+
+        layer.heatmapOpacity = nil;
+        XCTAssertTrue(rawLayer->getHeatmapOpacity().isUndefined(),
+                      @"Unsetting heatmapOpacity should return heatmap-opacity to the default value.");
+        XCTAssertEqualObjects(layer.heatmapOpacity, defaultExpression,
+                              @"heatmapOpacity should return the default value after being unset.");
+
+        functionExpression = [NSExpression expressionForKeyPath:@"bogus"];
+        XCTAssertThrowsSpecificNamed(layer.heatmapOpacity = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera-data expression is applied to a property that does not support key paths to feature attributes.");
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION(bogus, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@10: functionExpression}];
+        XCTAssertThrowsSpecificNamed(layer.heatmapOpacity = functionExpression, NSException, NSInvalidArgumentException, @"MGLHeatmapLayer should raise an exception if a camera-data expression is applied to a property that does not support key paths to feature attributes.");
+        // Transition property test
+        layer.heatmapOpacityTransition = transitionTest;
+        auto toptions = rawLayer->getHeatmapOpacityTransition();
+        XCTAssert(toptions.delay && MGLTimeIntervalFromDuration(*toptions.delay) == transitionTest.delay);
+        XCTAssert(toptions.duration && MGLTimeIntervalFromDuration(*toptions.duration) == transitionTest.duration);
+
+        MGLTransition heatmapOpacityTransition = layer.heatmapOpacityTransition;
+        XCTAssertEqual(heatmapOpacityTransition.delay, transitionTest.delay);
+        XCTAssertEqual(heatmapOpacityTransition.duration, transitionTest.duration);
+    }
+
+    // heatmap-radius
+    {
+        XCTAssertTrue(rawLayer->getHeatmapRadius().isUndefined(),
+                      @"heatmap-radius should be unset initially.");
+        NSExpression *defaultExpression = layer.heatmapRadius;
+
+        NSExpression *constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        layer.heatmapRadius = constantExpression;
+        mbgl::style::DataDrivenPropertyValue<float> propertyValue = { 0xff };
+        XCTAssertEqual(rawLayer->getHeatmapRadius(), propertyValue,
+                       @"Setting heatmapRadius to a constant value expression should update heatmap-radius.");
+        XCTAssertEqualObjects(layer.heatmapRadius, constantExpression,
+                              @"heatmapRadius should round-trip constant value expressions.");
+
+        constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        NSExpression *functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        layer.heatmapRadius = functionExpression;
+
+        mbgl::style::IntervalStops<float> intervalStops = {{
+            { -INFINITY, 0xff },
+            { 18, 0xff },
+        }};
+        propertyValue = mbgl::style::CameraFunction<float> { intervalStops };
+        
+        XCTAssertEqual(rawLayer->getHeatmapRadius(), propertyValue,
+                       @"Setting heatmapRadius to a camera expression should update heatmap-radius.");
+        XCTAssertEqualObjects(layer.heatmapRadius, functionExpression,
+                              @"heatmapRadius should round-trip camera expressions.");
+
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION(keyName, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@18: constantExpression}];
+        layer.heatmapRadius = functionExpression;
+
+        mbgl::style::ExponentialStops<float> exponentialStops = { {{18, 0xff}}, 1.0 };
+        propertyValue = mbgl::style::SourceFunction<float> { "keyName", exponentialStops };
+
+        XCTAssertEqual(rawLayer->getHeatmapRadius(), propertyValue,
+                       @"Setting heatmapRadius to a data expression should update heatmap-radius.");
+        XCTAssertEqualObjects(layer.heatmapRadius, functionExpression,
+                              @"heatmapRadius should round-trip data expressions.");
+
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@10: functionExpression}];
+        layer.heatmapRadius = functionExpression;
+
+        std::map<float, float> innerStops { {18, 0xff} };
+        mbgl::style::CompositeExponentialStops<float> compositeStops { { {10.0, innerStops} }, 1.0 };
+
+        propertyValue = mbgl::style::CompositeFunction<float> { "keyName", compositeStops };
+
+        XCTAssertEqual(rawLayer->getHeatmapRadius(), propertyValue,
+                       @"Setting heatmapRadius to a camera-data expression should update heatmap-radius.");
+        XCTAssertEqualObjects(layer.heatmapRadius, functionExpression,
+                              @"heatmapRadius should round-trip camera-data expressions.");
+                              
+
+        layer.heatmapRadius = nil;
+        XCTAssertTrue(rawLayer->getHeatmapRadius().isUndefined(),
+                      @"Unsetting heatmapRadius should return heatmap-radius to the default value.");
+        XCTAssertEqualObjects(layer.heatmapRadius, defaultExpression,
+                              @"heatmapRadius should return the default value after being unset.");
+        // Transition property test
+        layer.heatmapRadiusTransition = transitionTest;
+        auto toptions = rawLayer->getHeatmapRadiusTransition();
+        XCTAssert(toptions.delay && MGLTimeIntervalFromDuration(*toptions.delay) == transitionTest.delay);
+        XCTAssert(toptions.duration && MGLTimeIntervalFromDuration(*toptions.duration) == transitionTest.duration);
+
+        MGLTransition heatmapRadiusTransition = layer.heatmapRadiusTransition;
+        XCTAssertEqual(heatmapRadiusTransition.delay, transitionTest.delay);
+        XCTAssertEqual(heatmapRadiusTransition.duration, transitionTest.duration);
+    }
+
+    // heatmap-weight
+    {
+        XCTAssertTrue(rawLayer->getHeatmapWeight().isUndefined(),
+                      @"heatmap-weight should be unset initially.");
+        NSExpression *defaultExpression = layer.heatmapWeight;
+
+        NSExpression *constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        layer.heatmapWeight = constantExpression;
+        mbgl::style::DataDrivenPropertyValue<float> propertyValue = { 0xff };
+        XCTAssertEqual(rawLayer->getHeatmapWeight(), propertyValue,
+                       @"Setting heatmapWeight to a constant value expression should update heatmap-weight.");
+        XCTAssertEqualObjects(layer.heatmapWeight, constantExpression,
+                              @"heatmapWeight should round-trip constant value expressions.");
+
+        constantExpression = [NSExpression expressionWithFormat:@"0xff"];
+        NSExpression *functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_stepWithMinimum:stops:', %@, %@)", constantExpression, @{@18: constantExpression}];
+        layer.heatmapWeight = functionExpression;
+
+        mbgl::style::IntervalStops<float> intervalStops = {{
+            { -INFINITY, 0xff },
+            { 18, 0xff },
+        }};
+        propertyValue = mbgl::style::CameraFunction<float> { intervalStops };
+        
+        XCTAssertEqual(rawLayer->getHeatmapWeight(), propertyValue,
+                       @"Setting heatmapWeight to a camera expression should update heatmap-weight.");
+        XCTAssertEqualObjects(layer.heatmapWeight, functionExpression,
+                              @"heatmapWeight should round-trip camera expressions.");
+
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION(keyName, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@18: constantExpression}];
+        layer.heatmapWeight = functionExpression;
+
+        mbgl::style::ExponentialStops<float> exponentialStops = { {{18, 0xff}}, 1.0 };
+        propertyValue = mbgl::style::SourceFunction<float> { "keyName", exponentialStops };
+
+        XCTAssertEqual(rawLayer->getHeatmapWeight(), propertyValue,
+                       @"Setting heatmapWeight to a data expression should update heatmap-weight.");
+        XCTAssertEqualObjects(layer.heatmapWeight, functionExpression,
+                              @"heatmapWeight should round-trip data expressions.");
+
+        functionExpression = [NSExpression expressionWithFormat:@"FUNCTION($zoomLevel, 'mgl_interpolateWithCurveType:parameters:stops:', 'linear', nil, %@)", @{@10: functionExpression}];
+        layer.heatmapWeight = functionExpression;
+
+        std::map<float, float> innerStops { {18, 0xff} };
+        mbgl::style::CompositeExponentialStops<float> compositeStops { { {10.0, innerStops} }, 1.0 };
+
+        propertyValue = mbgl::style::CompositeFunction<float> { "keyName", compositeStops };
+
+        XCTAssertEqual(rawLayer->getHeatmapWeight(), propertyValue,
+                       @"Setting heatmapWeight to a camera-data expression should update heatmap-weight.");
+        XCTAssertEqualObjects(layer.heatmapWeight, functionExpression,
+                              @"heatmapWeight should round-trip camera-data expressions.");
+                              
+
+        layer.heatmapWeight = nil;
+        XCTAssertTrue(rawLayer->getHeatmapWeight().isUndefined(),
+                      @"Unsetting heatmapWeight should return heatmap-weight to the default value.");
+        XCTAssertEqualObjects(layer.heatmapWeight, defaultExpression,
+                              @"heatmapWeight should return the default value after being unset.");
+    }
+}
+
+- (void)testPropertyNames {
+    [self testPropertyName:@"heatmap-intensity" isBoolean:NO];
+    [self testPropertyName:@"heatmap-opacity" isBoolean:NO];
+    [self testPropertyName:@"heatmap-radius" isBoolean:NO];
+    [self testPropertyName:@"heatmap-weight" isBoolean:NO];
+}
+
+@end
diff --git a/platform/darwin/test/MGLStyleLayerTests.mm.ejs b/platform/darwin/test/MGLStyleLayerTests.mm.ejs
index e26c63e662..e17501ed18 100644
--- a/platform/darwin/test/MGLStyleLayerTests.mm.ejs
+++ b/platform/darwin/test/MGLStyleLayerTests.mm.ejs
@@ -59,6 +59,7 @@
     MGLTransition transitionTest = MGLTransitionMake(5, 4);
 
 <% for (const property of properties) { -%>
+<%   if (property.name === 'heatmap-color') continue; -%>
 
     // <%- originalPropertyName(property) %>
     {
@@ -151,6 +152,7 @@
 
 - (void)testPropertyNames {
 <% for (const property of properties) { -%>
+<%   if (property.name === 'heatmap-color') continue; -%>
     [self testPropertyName:@"<%- property.getter || property.name %>" isBoolean:<%- property.type === 'boolean' ? 'YES' : 'NO' %>];
 <% } -%>
 }