Move dateTickFormat to separate module

3 files changed, 52 insertions, 9 deletions

diff --git a/spec/javascripts/helpers/locale_helper.js b/spec/javascripts/helpers/locale_helper.js
new file mode 100644
index 00000000000..99e6ce61234
--- /dev/null
+++ b/spec/javascripts/helpers/locale_helper.js
@@ -0,0 +1,11 @@
+/* eslint-disable import/prefer-default-export */
+
+export const setLanguage = (languageCode) => {
+  const htmlElement = document.querySelector('html');
+
+  if (languageCode) {
+    htmlElement.setAttribute('lang', languageCode);
+  } else {
+    htmlElement.removeAttribute('lang');
+  }
+};
diff --git a/spec/javascripts/lib/utils/tick_formats_spec.js b/spec/javascripts/lib/utils/tick_formats_spec.js
new file mode 100644
index 00000000000..283989b4fc8
--- /dev/null
+++ b/spec/javascripts/lib/utils/tick_formats_spec.js
@@ -0,0 +1,40 @@
+import { dateTickFormat, initDateFormats } from '~/lib/utils/tick_formats';
+
+import { setLanguage } from '../../helpers/locale_helper';
+
+describe('tick formats', () => {
+  describe('dateTickFormat', () => {
+    beforeAll(() => {
+      setLanguage('de');
+      initDateFormats();
+    });
+
+    afterAll(() => {
+      setLanguage(null);
+    });
+
+    it('returns year for first of January', () => {
+      const tick = dateTickFormat(new Date('2001-01-01'));
+
+      expect(tick).toBe('2001');
+    });
+
+    it('returns month for first of February', () => {
+      const tick = dateTickFormat(new Date('2001-02-01'));
+
+      expect(tick).toBe('Februar');
+    });
+
+    it('returns day and month for second of February', () => {
+      const tick = dateTickFormat(new Date('2001-02-02'));
+
+      expect(tick).toBe('2. Feb.');
+    });
+
+    it('ignores time', () => {
+      const tick = dateTickFormat(new Date('2001-02-02 12:34:56'));
+
+      expect(tick).toBe('2. Feb.');
+    });
+  });
+});
diff --git a/spec/javascripts/locale/index_spec.js b/spec/javascripts/locale/index_spec.js
index 0f685c6d69d..29b0b21eed7 100644
--- a/spec/javascripts/locale/index_spec.js
+++ b/spec/javascripts/locale/index_spec.js
@@ -1,14 +1,6 @@
 import { createDateTimeFormat, languageCode } from '~/locale';
 
-const setLanguage = (languageCode) => {
-  const htmlElement = document.querySelector('html');
-
-  if (languageCode) {
-    htmlElement.setAttribute('lang', languageCode);
-  } else {
-    htmlElement.removeAttribute('lang');
-  }
-};
+import { setLanguage } from '../helpers/locale_helper';
 
 describe('locale', () => {
   afterEach(() => {