Fixed bugs found for the bitmap mask, JSON reader and wifi wrappers in the library.

Tests/PlaydateKit/WrapperTests.swift

@@ -127,6 +127,23 @@ struct WrapperTests {
         #expect(UnsafePointer(Mock.tilesPointer) == storage)
     }
 
+    @Test func bitmapMaskIsFreedAndKeepsItsBitmapAlive() {
+        weak var weakBitmap: Graphics.Bitmap?
+        var mask: Graphics.Bitmap?
+        do {
+            let bitmap = Graphics.Bitmap(width: 8, height: 8)
+            weakBitmap = bitmap
+            mask = bitmap.mask
+        }
+        #expect(mask != nil)
+        #expect(weakBitmap != nil)   // the mask keeps it alive
+        #expect(Mock.eventCount("freeBitmap") == 0)
+
+        mask = nil
+        #expect(weakBitmap == nil)
+        #expect(Mock.eventCount("freeBitmap") == 2)   // the mask, then the bitmap
+    }
+
     // MARK: Sprite
 
     @Test func spriteUserdataRecoversWrapperInCallbacks() {
@@ -385,13 +402,14 @@ struct WrapperTests {
     }
 
     @Test func jsonDecodeFileReadsThroughTheHandleAndClosesIt() throws {
-        Mock.fileReadLimit = 5
+        Mock.fileBytesRemaining = 20
         let value = try JSON.decodeFile(path: "save.json")
         guard case .null = value else {
             Issue.record("expected .null, got \(value)")
             return
         }
-        #expect(Mock.events.contains("decode(5)"))
+        // End of file reaches the decoder as 0, not -1.
+        #expect(Mock.events.contains("decode(total:20,end:0)"))
         #expect(Mock.eventCount("close") == 1)
     }
 
@@ -417,6 +435,20 @@ struct WrapperTests {
         #expect(throws: PlaydateError.self) { try handle.read(length: 8) }
     }
 
+    // MARK: Network
+
+    @Test func networkDisableRegistersNoCallbackSoEnableGetsItsOwnResult() {
+        var results: [String] = []
+        Network.disable()
+        #expect(Mock.events.last == "setEnabled(false,nil)")
+
+        Network.enable { error in results.append(error == nil ? "ok" : "failed") }
+        #expect(Mock.events.last == "setEnabled(true,callback)")
+
+        Mock.networkEnabledCallback?(NET_OK)
+        #expect(results == ["ok"])
+    }
+
     // MARK: JSON
 
     @Test func jsonDecodeBuildsTheValueTree() throws {