1 files changed, 80 insertions, 0 deletions
diff --git a/test/specs/utils/isX.spec.js b/test/specs/utils/isX.spec.js
new file mode 100644
index 0000000..59b3168
--- /dev/null
+++ b/test/specs/utils/isX.spec.js
@@ -0,0 +1,80 @@
+var utils = require('../../../lib/utils');
+var Stream = require('stream');
+
+describe('utils::isX', function () {
+  it('should validate Array', function () {
+    expect(utils.isArray([])).toEqual(true);
+    expect(utils.isArray({length: 5})).toEqual(false);
+  });
+
+  it('should validate Buffer', function () {
+    expect(utils.isBuffer(Buffer.from('a'))).toEqual(true);
+    expect(utils.isBuffer(null)).toEqual(false);
+    expect(utils.isBuffer(undefined)).toEqual(false);
+  });
+
+  it('should validate ArrayBuffer', function () {
+    expect(utils.isArrayBuffer(new ArrayBuffer(2))).toEqual(true);
+    expect(utils.isArrayBuffer({})).toEqual(false);
+  });
+
+  it('should validate ArrayBufferView', function () {
+    expect(utils.isArrayBufferView(new DataView(new ArrayBuffer(2)))).toEqual(true);
+  });
+
+  it('should validate FormData', function () {
+    expect(utils.isFormData(new FormData())).toEqual(true);
+  });
+
+  it('should validate Blob', function () {
+    expect(utils.isBlob(new Blob())).toEqual(true);
+  });
+
+  it('should validate String', function () {
+    expect(utils.isString('')).toEqual(true);
+    expect(utils.isString({toString: function () { return ''; }})).toEqual(false);
+  });
+
+  it('should validate Number', function () {
+    expect(utils.isNumber(123)).toEqual(true);
+    expect(utils.isNumber('123')).toEqual(false);
+  });
+
+  it('should validate Undefined', function () {
+    expect(utils.isUndefined()).toEqual(true);
+    expect(utils.isUndefined(null)).toEqual(false);
+  });
+
+  it('should validate Object', function () {
+    expect(utils.isObject({})).toEqual(true);
+    expect(utils.isObject([])).toEqual(true);
+    expect(utils.isObject(null)).toEqual(false);
+  });
+
+  it('should validate plain Object', function () {
+    expect(utils.isPlainObject({})).toEqual(true);
+    expect(utils.isPlainObject([])).toEqual(false);
+    expect(utils.isPlainObject(null)).toEqual(false);
+    expect(utils.isPlainObject(Object.create({}))).toEqual(false);
+  });
+
+  it('should validate Date', function () {
+    expect(utils.isDate(new Date())).toEqual(true);
+    expect(utils.isDate(Date.now())).toEqual(false);
+  });
+
+  it('should validate Function', function () {
+    expect(utils.isFunction(function () {})).toEqual(true);
+    expect(utils.isFunction('function')).toEqual(false);
+  });
+
+  it('should validate Stream', function () {
+    expect(utils.isStream(new Stream.Readable())).toEqual(true);
+    expect(utils.isStream({ foo: 'bar' })).toEqual(false);
+  });
+
+  it('should validate URLSearchParams', function () {
+    expect(utils.isURLSearchParams(new URLSearchParams())).toEqual(true);
+    expect(utils.isURLSearchParams('foo=1&bar=2')).toEqual(false);
+  });
+});