[ios, macos] cherry-pick darwin changes to tileset encoding param onto boba (#11324)

* [ios, macos] add tileset encoding option to darwin sources (#11274)

* add tileset encoding option to darwin sources

* correct style guide

* link out to dem encoding docs

* markdownify comments

* correct changelog

1 files changed, 17 insertions, 0 deletions

diff --git a/platform/darwin/test/MGLTileSetTests.mm b/platform/darwin/test/MGLTileSetTests.mm
index 4d5e1fcd05..74c84184e1 100644
--- a/platform/darwin/test/MGLTileSetTests.mm
+++ b/platform/darwin/test/MGLTileSetTests.mm
@@ -102,6 +102,23 @@
 
     // the scheme is reflected by the mbgl tileset
     XCTAssertEqual(tileSet.scheme, mbgl::Tileset::Scheme::TMS);
+
+    // when the dem enciding is changed using an NSNumber
+    tileSet = MGLTileSetFromTileURLTemplates(tileURLTemplates, @{
+        MGLTileSourceOptionDEMEncoding: @(MGLDEMEncodingTerrarium),
+    });
+
+    // the encoding is reflected by the mbgl tileset
+    XCTAssertEqual(tileSet.encoding, mbgl::Tileset::DEMEncoding::Terrarium);
+
+    // when the dem enciding is changed using an NSValue
+    MGLDEMEncoding terrarium = MGLDEMEncodingTerrarium;
+    tileSet = MGLTileSetFromTileURLTemplates(tileURLTemplates, @{
+        MGLTileSourceOptionDEMEncoding: [NSValue value:&terrarium withObjCType:@encode(MGLDEMEncoding)],
+    });
+
+    // the encoding is reflected by the mbgl tileset
+    XCTAssertEqual(tileSet.encoding, mbgl::Tileset::DEMEncoding::Terrarium);
 }
 
 - (void)testInvalidTileSet {