Fix actions/tour

node_modules/level-supports/test/self.js

@@ -0,0 +1,75 @@
+'use strict'
+
+const test = require('tape')
+const { supports } = require('..')
+const shape = require('./shape')
+const cloneable = require('./cloneable')
+
+test('no options', function (t) {
+  shape(t, supports())
+  cloneable(t, supports())
+  t.end()
+})
+
+test('falsy options', function (t) {
+  ;[null, false, undefined, 0, ''].forEach(function (value) {
+    const manifest = supports({
+      seek: value,
+      additionalMethods: {
+        foo: value
+      }
+    })
+
+    shape(t, manifest)
+    t.is(manifest.seek, false)
+  })
+
+  t.end()
+})
+
+test('truthy options', function (t) {
+  ;[true, {}, 'yes', 1, []].forEach(function (value) {
+    const manifest = supports({
+      streams: value,
+      additionalMethods: {
+        foo: value
+      }
+    })
+
+    shape(t, manifest)
+    t.same(manifest.streams, value)
+    t.same(manifest.additionalMethods.foo, value)
+  })
+
+  t.end()
+})
+
+test('merges input objects without mutating them', function (t) {
+  const input1 = { seek: null, streams: false }
+  const input2 = { streams: true, additionalMethods: {} }
+  const manifest = supports(input1, input2)
+
+  manifest.foobar = true
+  manifest.additionalMethods.baz = true
+
+  t.same(input1, { seek: null, streams: false })
+  t.same(input2, { streams: true, additionalMethods: {} })
+  t.is(manifest.seek, false)
+  t.is(manifest.streams, true)
+  shape(t, manifest)
+  t.end()
+})
+
+test('inherits additionalMethods', function (t) {
+  const manifest = supports({ additionalMethods: { foo: true } }, {})
+  t.same(manifest.additionalMethods, { foo: true })
+  t.end()
+})
+
+test('does not merge additionalMethods', function (t) {
+  const input1 = { additionalMethods: { foo: true } }
+  const input2 = { additionalMethods: { bar: true } }
+  const manifest = supports(input1, input2)
+  t.same(manifest.additionalMethods, { bar: true })
+  t.end()
+})