test: (wip) test for watch api

2019-08-26 22:47:38 -04:00
parent a20eeac7fe
commit d04a4f9cb0
2 changed files with 156 additions and 3 deletions
--- a/packages/runtime-core/src/apiWatch.ts
+++ b/packages/runtime-core/src/apiWatch.ts
@@ -81,7 +81,12 @@ function doWatch(
    ? () => source.map(s => (isRef(s) ? s.value : s()))
    : isRef(source)
      ? () => source.value
-      : () => source(registerCleanup)
+      : () => {
+          if (cleanup) {
+            cleanup()
+          }
+          return source(registerCleanup)
+        }
  const getter = deep ? () => traverse(baseGetter()) : baseGetter

  let cleanup: any
@@ -90,7 +95,7 @@ function doWatch(
    cleanup = runner.onStop = fn
  }

-  let oldValue: any
+  let oldValue = isArray(source) ? [] : undefined
  const applyCb = cb
    ? () => {
        const newValue = runner()