tests

package.json

@@ -4,7 +4,7 @@
   "description": "flag",
   "main": "index.js",
   "scripts": {
-    "test": "echo '1'"
+    "test": "node ./test.js | tap-spec"
   },
   "repository": {
     "type": "git",
@@ -26,5 +26,11 @@
   "dependencies": {
     "as-array": "^2.0.0",
     "ramda": "^0.18.0"
+  },
+  "devDependencies": {
+    "@cli/alias": "^0.3.0",
+    "@cli/handler": "^0.3.0",
+    "tap-spec": "^4.1.0",
+    "tessed": "^2.2.0"
   }
 }

test.js

@@ -0,0 +1,65 @@
+var namespace = require('tessed').namespace
+var flag = require('./')
+var alias = require('@cli/alias')
+var handler = require('@cli/handler')
+
+var test = namespace('flag')
+
+test('flag()', function (t) {
+
+  var fn1 = function () {}
+  var f = flag(
+    alias('-t'),
+    handler(fn1)
+  )
+
+  t.equal(typeof f, 'function', 'returns a function')
+  t.equal(f().type, 'flag', 'type')
+  t.deepEqual(f().value, {
+    alias: ['t'],
+    handler: [fn1]
+  }, 'value')
+  t.equal(f().options, undefined, 'no options')
+  t.deepEqual(f({key: 'value'}).options, {key: 'value'}, 'with options')
+})
+
+test('combines multiple values', function (t) {
+
+  var fn1 = function () {}
+  var fn2 = function () {}
+  var f = flag(
+    alias('--one'),
+    alias('-t'),
+    handler(fn1),
+    handler(fn2)
+  )
+
+  t.deepEqual(f().value, {
+    alias: ['one', 't'],
+    handler: [fn1, fn2]
+  }, 'value')
+})
+
+test('custom arguments', function (t) {
+
+  var f1 = flag(alias('-t'))
+  var f2 = flag(alias('--test', '-t'))
+
+  t.deepEqual(
+    f1().args([], {t: 't small', test: 't full'}),
+    ['t small'],
+    'args function first flag'
+  )
+
+  t.deepEqual(
+    f2().args([], {t: 't small', test: 't full'}),
+    ['t full', 't small'],
+    'args function second flag'
+  )
+
+  t.deepEqual(
+    f2().args([], {t: 't small'}),
+    ['t small'],
+    'removes undefined values'
+  )
+})