Add egghead tests

Author: RoyalIcing

src/egghead.test.ts

@@ -0,0 +1,45 @@
+/**
+ * @jest-environment jsdom
+ */
+
+import { on, start } from "./index";
+
+describe("Egghead", () => {
+  describe("Space heater", () => {
+    function SpaceHeater() {
+      function* PoweredOff() {
+        yield on("TOGGLE_POWER", PoweredOn);
+      }
+      function* PoweredOn() {
+        yield on("TOGGLE_POWER", PoweredOff);
+
+        function* LowHeat() {
+          yield on("TOGGLE_HEAT", HighHeat);
+        }
+        function* HighHeat() {
+          yield on("TOGGLE_HEAT", HighHeat);
+        }
+
+        return LowHeat;
+      }
+
+      return PoweredOff;
+    }
+
+    it("works as expected", () => {
+      const heater = start(SpaceHeater);
+  
+      expect(heater.value.state).toEqual("PoweredOff");
+      
+      heater.next("TOGGLE_POWER");
+      expect(heater.value.state).toEqual({ "PoweredOn": "LowHeat" });
+      
+      heater.next("TOGGLE_HEAT");
+      expect(heater.value.state).toEqual({ "PoweredOn": "HighHeat" });
+      
+      heater.next("TOGGLE_POWER");
+      expect(heater.value.state).toEqual("PoweredOff");
+    });
+  });
+
+});

src/index.test.ts

@@ -972,6 +972,24 @@ describe("accumulate()", () => {
   });
 });
 
+// describe("Parallel", () => {
+//   // See: https://twitter.com/StateML_org/status/1445502469497188362
+
+//   function* FileManager() {
+//     function* upload() {
+//       function* idle() {}
+//       function* pending() {}
+//       function* playground() {}
+
+//     }
+//   }
+
+//   it("can run", () => {
+//     const machine = start(Example);
+//     expect(machine.value.state).toEqual({ tooling: { viz:} })
+//   })
+// });
+
 /*describe("Counter", () => {
   function* Counter() {
     function* initial() {