Feat/seconds (#38)

* change directory structure

move test file to __tests__ at the module directory

* test function

Add more tests to ensure the function remains safe

* fix coverage filter

* change directory structure

move to utilities folder

* refract formatDisplay with tst

* test millis

* test millis to seconds

* refract millis functions

* refractor timeStringToMillis

* create utility consts

* style component

* fixed bug with hidezero parameter

* fix issue with cancelling input edit

* style tweak

server/src/utils/__tests__/time.tests.js

@@ -0,0 +1,58 @@
+import { stringFromMillis } from '../time.js';
+
+describe('test string to milis function', () => {
+  it('test with null values', () => {
+    const t = { val: null, result: '...' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with valid millis', () => {
+    const t = { val: 3600000, result: '01:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with negative millis', () => {
+    const t = { val: -3600000, result: '-01:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with -1', () => {
+    const t = { val: -1, result: '-00:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test  with 0', () => {
+    const t = { val: 0, result: '00:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with -0', () => {
+    const t = { val: -0, result: '00:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with 999', () => {
+    const t = { val: 999, result: '00:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with 1000', () => {
+    const t = { val: 1000, result: '00:00:01' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with 86400000 (24 hours)', () => {
+    const t = { val: 86400000, result: '00:00:00' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with 86401000 (24 hours and 1 second)', () => {
+    const t = { val: 86401000, result: '00:00:01' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+
+  it('test with -86401000 (-24 hours and 1 second)', () => {
+    const t = { val: -86401000, result: '-00:00:01' };
+    expect(stringFromMillis(t.val)).toBe(t.result);
+  });
+});