1 files changed, 83 insertions, 0 deletions
diff --git a/src/utils/readable_time.test.js b/src/utils/readable_time.test.js
new file mode 100644
index 0000000..5d8ba27
--- /dev/null
+++ b/src/utils/readable_time.test.js
@@ -0,0 +1,83 @@
+import { readableTime } from './readable_time';
+
+describe('readableTime', () => {
+
+  test('it shows negative time as 0', () => {
+
+    const response = readableTime(-1000);
+
+    expect(response.count).toBe(0);
+    expect(response.label).toContain('seconds');
+  });
+
+  test('uses seconds as the smallest unit', () => {
+
+    const response = readableTime(10);
+
+    expect(response.count).toBe(0);
+    expect(response.label).toContain('seconds');
+  });
+
+  test('correctly divides miliseconds into seconds', () => {
+
+    const response = readableTime(4000);
+
+    expect(response.count).toBe(4);
+  });
+
+  test('uses seconds if the time is < 1 minute', () => {
+
+    const response = readableTime(59 * 1000);
+
+    expect(response.label).toContain('seconds');
+  });
+
+  test('correctly divides miliseconds into minutes', () => {
+
+    const response = readableTime(2 * 60 * 1000);
+
+    expect(response.count).toBe(2);
+  });
+
+  test('uses minutes if the time is < 1 hour', () => {
+
+    const response = readableTime(59 * 60 * 1000);
+
+    expect(response.label).toContain('minutes');
+  });
+
+  test('correctly divides miliseconds into hours', () => {
+
+    const response = readableTime(2 * 60 * 60 * 1000);
+
+    expect(response.count).toBe(2);
+  });
+
+  test('uses hours if the time is < 1 days', () => {
+
+    const response = readableTime(23 * 60 * 60 * 1000);
+
+    expect(response.label).toContain('hours');
+  });
+
+  test('correctly divides miliseconds into days', () => {
+
+    const response = readableTime(2 * 24 * 60 * 60 * 1000);
+
+    expect(response.count).toBe(2);
+  });
+
+  test('uses days if the time is >= 1 day', () => {
+
+    const response = readableTime(364 * 24 * 60 * 60 * 1000);
+
+    expect(response.label).toContain('days');
+  });
+
+  test('uses days as the maximum unit', () => {
+
+    const response = readableTime(Number.MAX_VALUE);
+
+    expect(response.label).toContain('days');
+  });
+});