add test for reopening writable core

test/basic.js

@@ -135,6 +135,53 @@ test('createIfMissing', async function (t) {
  await db.close()
 })
 
+test('reopen writable core', async function (t) {
+ const dir = await createTempDir(t)
+
+ const core = new Hypercore(dir)
+ await core.ready()
+
+ let appends = 0
+
+ t.is(core.length, 0)
+ t.is(core.writable, true)
+ t.is(core.readable, true)
+
+ core.on('append', function () {
+ appends++
+ })
+
+ await core.append('hello')
+ await core.append('world')
+
+ const info = await core.info()
+
+ t.is(core.length, 2)
+ t.is(info.byteLength, 10)
+ t.is(appends, 2)
+
+ await core.close()
+
+ const core2 = new Hypercore(dir)
+ await core2.ready()
+
+ t.is(core2.length, 2)
+ t.is(core2.writable, true)
+ t.is(core2.readable, true)
+
+ core2.on('append', function () {
+ appends++
+ })
+
+ await core2.append('goodbye')
+ await core2.append('test')
+
+ t.is(core2.length, 4)
+ t.is(appends, 4)
+
+ await core2.close()
+})
+
 test('reopen and overwrite', async function (t) {
  const dir = await createTempDir()
  let storage = null