3 files changed, 80 insertions, 1 deletions

diff --git a/spec/javascripts/lib/utils/common_utils_spec.js b/spec/javascripts/lib/utils/common_utils_spec.js
index 1ec1e8a8dd9..f320f232687 100644
--- a/spec/javascripts/lib/utils/common_utils_spec.js
+++ b/spec/javascripts/lib/utils/common_utils_spec.js
@@ -716,4 +716,29 @@ describe('common_utils', () => {
       expect(commonUtils.roundOffFloat(34567.14159, -5)).toBe(0);
     });
   });
+
+  describe('isInViewport', () => {
+    let el;
+
+    beforeEach(() => {
+      el = document.createElement('div');
+    });
+
+    afterEach(() => {
+      document.body.removeChild(el);
+    });
+
+    it('returns true when provided `el` is in viewport', () => {
+      document.body.appendChild(el);
+
+      expect(commonUtils.isInViewport(el)).toBe(true);
+    });
+
+    it('returns false when provided `el` is not in viewport', () => {
+      el.setAttribute('style', 'position: absolute; top: -1000px; left: -1000px;');
+      document.body.appendChild(el);
+
+      expect(commonUtils.isInViewport(el)).toBe(false);
+    });
+  });
 });
diff --git a/spec/javascripts/lib/utils/datetime_utility_spec.js b/spec/javascripts/lib/utils/datetime_utility_spec.js
index bebe76f76c5..5327ec9d2a0 100644
--- a/spec/javascripts/lib/utils/datetime_utility_spec.js
+++ b/spec/javascripts/lib/utils/datetime_utility_spec.js
@@ -156,7 +156,7 @@ describe('getSundays', () => {
 });
 
 describe('getTimeframeWindowFrom', () => {
-  it('returns array of date objects upto provided length start with provided startDate', () => {
+  it('returns array of date objects upto provided length (positive number) into the future starting from provided startDate', () => {
     const startDate = new Date(2018, 0, 1);
     const mockTimeframe = [
       new Date(2018, 0, 1),
@@ -174,6 +174,25 @@ describe('getTimeframeWindowFrom', () => {
       expect(timeframeItem.getDate()).toBe(mockTimeframe[index].getDate());
     });
   });
+
+  it('returns array of date objects upto provided length (negative number) into the past starting from provided startDate', () => {
+    const startDate = new Date(2018, 0, 1);
+    const mockTimeframe = [
+      new Date(2018, 0, 1),
+      new Date(2017, 11, 1),
+      new Date(2017, 10, 1),
+      new Date(2017, 9, 1),
+      new Date(2017, 8, 1),
+    ];
+    const timeframe = datetimeUtility.getTimeframeWindowFrom(startDate, -5);
+
+    expect(timeframe.length).toBe(5);
+    timeframe.forEach((timeframeItem, index) => {
+      expect(timeframeItem.getFullYear()).toBe(mockTimeframe[index].getFullYear());
+      expect(timeframeItem.getMonth()).toBe(mockTimeframe[index].getMonth());
+      expect(timeframeItem.getDate()).toBe(mockTimeframe[index].getDate());
+    });
+  });
 });
 
 describe('formatTime', () => {
@@ -376,3 +395,22 @@ describe('calculateRemainingMilliseconds', () => {
     expect(milliseconds).toBe(0);
   });
 });
+
+describe('newDate', () => {
+  it('returns new date instance from existing date instance', () => {
+    const initialDate = new Date(2019, 0, 1);
+    const copiedDate = datetimeUtility.newDate(initialDate);
+
+    expect(copiedDate.getTime()).toBe(initialDate.getTime());
+
+    initialDate.setMonth(initialDate.getMonth() + 1);
+
+    expect(copiedDate.getTime()).not.toBe(initialDate.getTime());
+  });
+
+  it('returns date instance when provided date param is not of type date or is undefined', () => {
+    const initialDate = datetimeUtility.newDate();
+
+    expect(initialDate instanceof Date).toBe(true);
+  });
+});
diff --git a/spec/javascripts/lib/utils/text_utility_spec.js b/spec/javascripts/lib/utils/text_utility_spec.js
index 92ebfc38722..0a266b19ea5 100644
--- a/spec/javascripts/lib/utils/text_utility_spec.js
+++ b/spec/javascripts/lib/utils/text_utility_spec.js
@@ -135,4 +135,20 @@ describe('text_utility', () => {
       expect(textUtils.getFirstCharacterCapitalized(null)).toEqual('');
     });
   });
+
+  describe('truncatePathMiddleToLength', () => {
+    it('does not truncate text', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test', 50)).toEqual('app/test');
+    });
+
+    it('truncates middle of the path', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test/diff', 13)).toEqual('app/…/diff');
+    });
+
+    it('truncates multiple times in the middle of the path', () => {
+      expect(textUtils.truncatePathMiddleToLength('app/test/merge_request/diff', 13)).toEqual(
+        'app/…/…/diff',
+      );
+    });
+  });
 });