chore(quark): sync tests with standalone

packages/quark/test/solid.test.ts

@@ -0,0 +1,85 @@
+import { describe, expect, it } from "bun:test"
+import { createComputed, createRoot, createSignal } from "solid-js"
+import { Computed, Keyed, State, Transaction, type Readable } from "../src"
+import { useSlot, useValue } from "../src/solid"
+
+describe("Solid adapter", () => {
+  it("bridges Quark values into Solid ownership", () => {
+    const left = State.make(1)
+    const right = State.make(2)
+    const total = Computed.make(() => left() + right())
+    const values: number[] = []
+
+    createRoot((dispose) => {
+      const value = useValue(total)
+      createComputed(() => values.push(value()))
+
+      Transaction.run(() => {
+        left.set(2)
+        right.set(3)
+      })
+      dispose()
+    })
+
+    left.set(4)
+    expect(values).toEqual([3, 5])
+  })
+
+  it("preserves function values", () => {
+    const first = () => 1
+    const second = () => 2
+    const state = State.make(first)
+    let value = first
+
+    createRoot((dispose) => {
+      const current = useValue(state)
+      createComputed(() => value = current())
+      state.set(second)
+      dispose()
+    })
+
+    expect(value).toBe(second)
+  })
+
+  it("switches keyed slots and releases obsolete subscriptions", () => {
+    const keyed = Keyed.make<{ readonly id: number; readonly value: string }, number>({ key: (value) => value.id })
+    keyed.set([
+      { id: 1, value: "one" },
+      { id: 2, value: "two" },
+    ])
+    const active = [0, 0]
+    track(keyed.get(1)!, 0)
+    track(keyed.get(2)!, 1)
+    const values: Array<string | undefined> = []
+
+    createRoot((dispose) => {
+      const [key, setKey] = createSignal(1)
+      const value = useSlot(keyed, key)
+      createComputed(() => values.push(value()?.value))
+
+      keyed.modify(1, (item) => ({ ...item, value: "ONE" }))
+      keyed.insert({ id: 3, value: "three" })
+      setKey(2)
+      keyed.modify(1, (item) => ({ ...item, value: "ignored" }))
+      keyed.modify(2, (item) => ({ ...item, value: "TWO" }))
+
+      expect(active).toEqual([0, 1])
+      dispose()
+    })
+
+    expect(active).toEqual([0, 0])
+    expect(values).toEqual(["one", "ONE", "two", "TWO"])
+
+    function track(slot: Readable<{ readonly id: number; readonly value: string }>, index: number) {
+      const subscribe = slot.subscribe
+      slot.subscribe = (listener) => {
+        active[index]++
+        const dispose = subscribe(listener)
+        return () => {
+          active[index]--
+          dispose()
+        }
+      }
+    }
+  })
+})