fix(rm): stop crashing if content is missing on rm

lib/content/rm.js

@@ -9,9 +9,13 @@ const rimraf = BB.promisify(require('rimraf'))
 module.exports = rm
 function rm (cache, integrity) {
   return hasContent(cache, integrity).then(content => {
-    const sri = content.sri
-    if (sri) {
-      return rimraf(contentPath(cache, sri))
+    if (content) {
+      const sri = content.sri
+      if (sri) {
+        return rimraf(contentPath(cache, sri)).then(() => true)
+      }
+    } else {
+      return false
     }
   })
 }

lib/entry-index.js

@@ -215,7 +215,9 @@ function formatEntry (cache, entry) {
 }
 
 function readdirOrEmpty (dir) {
-  return readdirAsync(dir).catch({code: 'ENOENT'}, () => [])
+  return readdirAsync(dir)
+  .catch({code: 'ENOENT'}, () => [])
+  .catch({code: 'ENOTDIR'}, () => [])
 }
 
 function nop () {

test/ls.js

@@ -11,6 +11,7 @@ const testDir = require('./util/test-dir')(__filename)
 
 const CACHE = path.join(testDir, 'cache')
 const contentPath = require('../lib/content/path')
+const File = Tacks.File
 
 const ls = require('..').ls
 
@@ -88,6 +89,25 @@ test('separate keys in conflicting buckets', function (t) {
 
 test('works fine on an empty/missing cache', function (t) {
   return ls(CACHE).then(listing => {
-    t.deepEqual(listing, {})
+    t.deepEqual(listing, {}, 'returned an empty listing')
+  })
+})
+
+test('ignores non-dir files', function (t) {
+  const index = CacheIndex({
+    'whatever': {
+      key: 'whatever',
+      integrity: 'sha512-deadbeef',
+      time: 12345,
+      metadata: 'omgsometa',
+      size: 234234
+    }
+  })
+  index.contents['garbage'] = File('hello world')
+  const fixture = new Tacks(index)
+  fixture.create(CACHE)
+  return ls(CACHE).then(listing => {
+    t.equal(Object.keys(listing).length, 1, 'only 1 item in listing')
+    t.equal(listing.whatever.key, 'whatever', 'only the correct entry listed')
   })
 })