implab/implabjs-djx Files · djx/src/test/ts/state-tests.ts

fixed isNode, isWidget, isRendition type predicated, fixed handling primitive values

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r124:fbe158a5752a default


                r127:8095aad89415

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             state-tests.ts
        
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        cin
    
added while, until methods to the observable interface....

              r124
            
      import { observe, stateful } from "./observable";

      import * as t from "tap";

      interface CounterState {

          count: number;

          label: "low" | "mid" | "high"

      }

      let set: (v: CounterState) => void = () => void (0);

      const initial: CounterState = { count: 0, label: "low" };

      let value = initial;

      const obs = observe(stateful<CounterState>(({ next }) => {

          next(initial);

          set = next;

      }));

      set({ count: 10, label: "mid" });

      obs.subscribe({

          next: v => value = v

      });

      t.equal(value.count, 10, "State should update");

      set({ count: 20, label: "high" });

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cin added while, until methods to the observable interface....	r124	import { observe, stateful } from "./observable";
		import * as t from "tap";

		interface CounterState {
		count: number;

		label: "low" \| "mid" \| "high"
		}

		let set: (v: CounterState) => void = () => void (0);
		const initial: CounterState = { count: 0, label: "low" };
		let value = initial;

		const obs = observe(stateful<CounterState>(({ next }) => {
		next(initial);
		set = next;
		}));

		set({ count: 10, label: "mid" });

		obs.subscribe({
		next: v => value = v
		});

		t.equal(value.count, 10, "State should update");

		set({ count: 20, label: "high" });