[ios, macos] Add tile template option to raster and vector sources

A new MGLTileSet class that wraps all available core Tileset options can be created and passed into the sources. The sources pass that tileset object along to core.

1 files changed, 82 insertions, 0 deletions

diff --git a/platform/ios/test/MGLTileSetTests.mm b/platform/ios/test/MGLTileSetTests.mm
new file mode 100644
index 0000000000..d77046928c
--- /dev/null
+++ b/platform/ios/test/MGLTileSetTests.mm
@@ -0,0 +1,82 @@
+#import <XCTest/XCTest.h>
+
+#import <Mapbox/Mapbox.h>
+#import "MGLTileSet_Private.h"
+
+#include <mbgl/util/tileset.hpp>
+
+@interface MGLTileSetTests : XCTestCase
+
+@end
+
+@implementation MGLTileSetTests
+
+- (void)testTileSet {
+    // a tile set that provides an mbgl tile set
+    MGLTileSet *tileSet = [[MGLTileSet alloc] initWithTileURLTemplates:@[@"tile.1",
+                                                                         @"tile.2",
+                                                                         @"tile.3"]];
+    mbgl::Tileset mbglTileset = [tileSet mbglTileset];
+    
+    // has the correct URL templates
+    XCTAssertEqual(mbglTileset.tiles.size(), 3);
+    XCTAssertEqual(mbglTileset.tiles[0], "tile.1");
+    XCTAssertEqual(mbglTileset.tiles[1], "tile.2");
+    XCTAssertEqual(mbglTileset.tiles[2], "tile.3");
+    
+    // has the default scheme
+    XCTAssertEqual(mbglTileset.scheme, mbgl::Tileset::Scheme::XYZ);
+   
+    // when the tile set has no min or max zoom level set
+    tileSet.minimumZoomLevel = nil;
+    tileSet.maximumZoomLevel = nil;
+    
+    // the mbgl object has default values for min and max zoom level
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.min, 0);
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.max, 22);
+    
+    // when the tile set has min and/or max zoom level set
+    tileSet.minimumZoomLevel = @(1);
+    tileSet.maximumZoomLevel = @(2);
+    
+    // the mbgl object reflects the set values for min and max zoom level
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.min, 1);
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.max, 2);
+    
+    // when the tile set has an attribution
+    tileSet.attribution = @"my tileset © ©️🎈";
+    
+    // the attribution is reflected by the mbgl tileset
+    XCTAssertEqual([tileSet mbglTileset].attribution, tileSet.attribution.UTF8String);
+    
+    // when the scheme is changed
+    tileSet.scheme = MGLTileSetSchemeTMS;
+    
+    // the scheme is reflected by the mbgl tileset
+    XCTAssertEqual([tileSet mbglTileset].scheme , mbgl::Tileset::Scheme::TMS);
+    
+    // a tile set that provides an mbgl tile set and minimum and maximum zoom levels
+    tileSet = [[MGLTileSet alloc] initWithTileURLTemplates:@[@"tile.1"] minimumZoomLevel:15 maximumZoomLevel:20];
+    
+    // the zoom levels are reflected by the mbgl tileset
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.min, 15);
+    XCTAssertEqual([tileSet mbglTileset].zoomRange.max, 20);
+}
+
+- (void)testInvalidTileSet {
+    // a tile set that provides an mbgl tile set and invalid (crossed) minimum and maximum zoom levels throws an exception
+    XCTAssertThrowsSpecificNamed([[MGLTileSet alloc] initWithTileURLTemplates:@[@"tile.1"] minimumZoomLevel:10 maximumZoomLevel:9], NSException,  @"Invalid minimumZoomLevel");
+    
+    // a tile set that provides an mbgl tile set
+    MGLTileSet *tileSet = [[MGLTileSet alloc] initWithTileURLTemplates:@[@"tile.1"]];
+    tileSet.maximumZoomLevel = @(10);
+    
+    // when the minimum zoom level is set higher than the maximum zoom level
+    XCTAssertThrowsSpecificNamed(tileSet.minimumZoomLevel = @(11), NSException, @"Invalid minimumZoomLevel");
+    
+    // when the maximum zoom level is set lower than the minimum zoom level
+    tileSet.minimumZoomLevel = @(5);
+    XCTAssertThrowsSpecificNamed(tileSet.maximumZoomLevel = @(4), NSException, @"Invalid minimumZoomLevel");
+}
+
+@end