propagators/constant.test

TODO.md

@@ -4,9 +4,7 @@
 
 > https://github.com/cicada-lang/propagator/issues/4
 
-propagators/constant.test
-propagators/boolean
-propagators/boolean.test
+extract constantCell
 global map about about nogood
 
 `propagators/binaryAmb`

src/propagators/constant.test.ts

@@ -0,0 +1,12 @@
+import assert from "node:assert"
+import test from "node:test"
+import { nothing } from "../nothing/Nothing.js"
+import { run } from "../scheduler/index.js"
+import { constant } from "./constant.js"
+
+test("propagators / constant", async () => {
+  const x = constant(1)()
+  assert(x.content === nothing)
+  await run()
+  assert(x.content === 1)
+})