1 files changed, 21 insertions, 0 deletions
diff --git a/date-fns/src/monthsToQuarters/test.ts b/date-fns/src/monthsToQuarters/test.ts
new file mode 100644
index 0000000..a1907d3
--- /dev/null
+++ b/date-fns/src/monthsToQuarters/test.ts
@@ -0,0 +1,21 @@
+/* eslint-env mocha */
+
+import assert from 'assert'
+import monthsToQuarters from '.'
+
+describe('monthsToQuarters', function () {
+  it('converts months to quarters', function () {
+    assert(monthsToQuarters(3) === 1)
+    assert(monthsToQuarters(6) === 2)
+  })
+
+  it('uses floor rounding', () => {
+    assert(monthsToQuarters(4) === 1)
+    assert(monthsToQuarters(2) === 0)
+  })
+
+  it('handles border values', () => {
+    assert(monthsToQuarters(3.5) === 1)
+    assert(monthsToQuarters(0) === 0)
+  })
+})