Add optional seconds picker

test/models/second.test.ts

@@ -0,0 +1,119 @@
+import { Second } from '../../src/models/Second';
+import { Direction } from '../../src/types';
+import { expect } from 'chai';
+
+describe('Second', () => {
+  let second: Second;
+
+  context('with default config', () => {
+    beforeEach(() => {
+      second = new Second(2);
+    });
+
+    it('returns value', () => {
+      expect(second.value).to.equal(2);
+    });
+
+    it('has correct max value', () => {
+      expect(second.maxValue).to.equal(59);
+    });
+
+    describe('toString', () => {
+      it('renders values correctly', () => {
+        second = new Second(0);
+        expect(second.toString()).to.equal('00');
+
+        second = new Second(5);
+        expect(second.toString()).to.equal('05');
+
+        second = new Second(59);
+        expect(second.toString()).to.equal('59');
+      });
+    });
+
+    describe('stepUpdate', () => {
+      it('updates up', () => {
+        second.stepUpdate(Direction.UP);
+        expect(second.value).to.equal(7);
+      });
+
+      it('updates down', () => {
+        second.stepUpdate(Direction.DOWN);
+        expect(second.value).to.equal(57);
+      });
+
+      it('goes up from 59 to 4', () => {
+        second = new Second(59);
+        second.stepUpdate(Direction.UP);
+        expect(second.value).to.equal(4);
+      });
+
+      it('goes down from 0 to 55', () => {
+        second = new Second(0);
+        second.stepUpdate(Direction.DOWN);
+        expect(second.value).to.equal(55);
+      });
+    });
+
+    describe('setStringValue', () => {
+      it('sets value from valid string', () => {
+        second.setStringValue('3');
+        expect(second.value).to.equal(3);
+      });
+
+      it("doesn't set value from invalid string", () => {
+        second.setStringValue('test');
+        expect(second.value).to.equal(2);
+      });
+
+      it("doesn't set value from outside of scope", () => {
+        second.setStringValue('60');
+        expect(second.value).to.equal(2);
+
+        second.setStringValue('65');
+        expect(second.value).to.equal(2);
+      });
+    });
+  });
+
+  context('with a different step size', () => {
+    beforeEach(() => {
+      second = new Second(2, 15);
+    });
+
+    it('goes up correctly', () => {
+      second.stepUpdate(Direction.UP);
+      expect(second.value).to.equal(17);
+
+      second.stepUpdate(Direction.UP);
+      second.stepUpdate(Direction.UP);
+      second.stepUpdate(Direction.UP);
+      expect(second.value).to.equal(2);
+
+      second.stepUpdate(Direction.UP);
+      expect(second.value).to.equal(17);
+    });
+
+    it('goes down correclty', () => {
+      second.stepUpdate(Direction.DOWN);
+      expect(second.value).to.equal(47);
+    });
+  });
+
+  describe('will overflow', () => {
+    it('returns true if the Seconds will overflow an hour up', () => {
+      second.setStringValue('59');
+      expect(second.willOverflow(Direction.UP)).to.be.true;
+    });
+
+    it('returns true if the Seconds will overflow an hour down', () => {
+      second.setStringValue('0');
+      expect(second.willOverflow(Direction.DOWN)).to.be.true;
+    });
+
+    it('returns true if the Seconds will not overflow', () => {
+      second.setStringValue('55');
+      expect(second.willOverflow(Direction.DOWN)).to.be.false;
+    });
+  });
+});