From cf776b79f84a2f529abf591f9f8817386306d9ea Mon Sep 17 00:00:00 2001
From: Jon Espen Kvisler <jonespen@gmail.com>
Date: Thu, 29 Aug 2019 14:26:33 +0200
Subject: [PATCH] added failing tests for getDays

---
 packages/hooks/src/useMonth/useMonth.test.ts | 70 ++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/packages/hooks/src/useMonth/useMonth.test.ts b/packages/hooks/src/useMonth/useMonth.test.ts
index 8f4afdb..15a1726 100644
--- a/packages/hooks/src/useMonth/useMonth.test.ts
+++ b/packages/hooks/src/useMonth/useMonth.test.ts
@@ -188,6 +188,76 @@ describe('useMonth', () => {
     expect(result.current.weekdayLabels[6]).toBe('Fr')
   })
 
+  test('should return days for september 2019', () => {
+    const {result} = renderHook(() => useMonth({year: 2019, month: 8}))
+
+    // Days
+    expect(result.current.days.length).toBe(36)
+    expect(typeof result.current.days[0]).toBe('number')
+    expect(typeof result.current.days[1]).toBe('number')
+    expect(typeof result.current.days[2]).toBe('number')
+    expect(typeof result.current.days[3]).toBe('number')
+    expect(typeof result.current.days[4]).toBe('number')
+    expect(typeof result.current.days[5]).toBe('number')
+    // @ts-ignore
+    expect(result.current.days[6].dayLabel).toBe('01')
+    // @ts-ignore
+    expect(result.current.days[result.current.days.length - 1].dayLabel).toBe('30')
+
+    // Week days
+    expect(result.current.weekdayLabels.length).toBe(7)
+    expect(result.current.weekdayLabels[0]).toBe('Mo')
+    expect(result.current.weekdayLabels[6]).toBe('Su')
+
+    // Month Label
+    expect(result.current.monthLabel).toBe('September 2019')
+  })
+
+  test('should return days for september 2019 start with wednesday', () => {
+    const {result} = renderHook(() => useMonth({year: 2019, month: 8, firstDayOfWeek: 3}))
+
+    // Days
+    expect(result.current.days.length).toBe(34)
+    expect(typeof result.current.days[0]).toBe('number')
+    expect(typeof result.current.days[1]).toBe('number')
+    expect(typeof result.current.days[2]).toBe('number')
+    expect(typeof result.current.days[3]).toBe('number')
+    // @ts-ignore
+    expect(result.current.days[4].dayLabel).toBe('01')
+    // @ts-ignore
+    expect(result.current.days[result.current.days.length - 1].dayLabel).toBe('30')
+
+    // Week days
+    expect(result.current.weekdayLabels.length).toBe(7)
+    expect(result.current.weekdayLabels[0]).toBe('We')
+    expect(result.current.weekdayLabels[6]).toBe('Tu')
+
+    // Month Label
+    expect(result.current.monthLabel).toBe('September 2019')
+  })
+
+  test('should return days for october 2019 start with friday', () => {
+    const {result} = renderHook(() => useMonth({year: 2019, month: 9, firstDayOfWeek: 5}))
+    // Days
+    expect(result.current.days.length).toBe(35)
+    expect(typeof result.current.days[0]).toBe('number')
+    expect(typeof result.current.days[1]).toBe('number')
+    expect(typeof result.current.days[2]).toBe('number')
+    expect(typeof result.current.days[3]).toBe('number')
+    // @ts-ignore
+    expect(result.current.days[4].dayLabel).toBe('01')
+    // @ts-ignore
+    expect(result.current.days[result.current.days.length - 1].dayLabel).toBe('31')
+
+    // Week days
+    expect(result.current.weekdayLabels.length).toBe(7)
+    expect(result.current.weekdayLabels[0]).toBe('Fr')
+    expect(result.current.weekdayLabels[6]).toBe('Th')
+
+    // Month Label
+    expect(result.current.monthLabel).toBe('October 2019')
+  })
+
   test('should return right formats', () => {
     const {result} = renderHook(() =>
       useMonth({