1 files changed, 37 insertions, 0 deletions
diff --git a/date-fns/src/isTomorrow/test.ts b/date-fns/src/isTomorrow/test.ts
new file mode 100644
index 0000000..b442c8a
--- /dev/null
+++ b/date-fns/src/isTomorrow/test.ts
@@ -0,0 +1,37 @@
+// @flow
+/* eslint-env mocha */
+
+import assert from 'assert'
+import sinon from 'sinon'
+import isTomorrow from '.'
+
+describe('isTomorrow', () => {
+  let clock: sinon.SinonFakeTimers
+  beforeEach(() => {
+    clock = sinon.useFakeTimers(new Date(2014, 8 /* Aug */, 25).getTime())
+  })
+
+  afterEach(() => {
+    clock.restore()
+  })
+
+  it('returns true if the given date is tomorrow', () => {
+    const result = isTomorrow(new Date(2014, 8 /* Sep */, 26))
+    assert(result === true)
+  })
+
+  it('returns false if the given date is not tomorrow', () => {
+    const result = isTomorrow(new Date(2014, 8 /* Sep */, 25))
+    assert(result === false)
+  })
+
+  it('accepts a timestamp', () => {
+    const result = isTomorrow(new Date(2014, 8 /* Sep */, 26).getTime())
+    assert(result === true)
+  })
+
+  it('throws TypeError exception if passed less than 1 argument', () => {
+    // @ts-expect-error
+    assert.throws(isTomorrow.bind(null), TypeError)
+  })
+})