1 files changed, 46 insertions, 0 deletions
diff --git a/library/cropperjs/test/specs/options/zoom.spec.js b/library/cropperjs/test/specs/options/zoom.spec.js
new file mode 100644
index 000000000..3d11f3a2f
--- /dev/null
+++ b/library/cropperjs/test/specs/options/zoom.spec.js
@@ -0,0 +1,46 @@
+describe('zoom (option)', () => {
+  it('should be `null` be default', () => {
+    const image = window.createImage();
+    const cropper = new Cropper(image);
+
+    expect(cropper.options.zoom).to.be.null;
+  });
+
+  it('should execute the `zoom` hook function', (done) => {
+    const image = window.createImage();
+    const cropper = new Cropper(image, {
+      ready() {
+        cropper.zoom(0.1);
+      },
+
+      zoom(event) {
+        expect(event.type).to.equal('zoom');
+        expect(event.detail).to.be.an('object').that.has.all.keys(['ratio', 'oldRatio', 'originalEvent']);
+        expect(event.detail.ratio).to.be.a('number');
+        expect(event.detail.oldRatio).to.be.a('number');
+        expect(event.detail.ratio).to.be.above(0);
+        expect(event.detail.oldRatio).to.be.above(0);
+        expect(event.detail.ratio).to.be.above(event.detail.oldRatio);
+        done();
+      },
+    });
+
+    expect(cropper.options.zoom).to.be.a('function');
+  });
+
+  it('should not change the canvas sizes when default prevented', (done) => {
+    const image = window.createImage();
+    const cropper = new Cropper(image, {
+      ready() {
+        const canvasData = cropper.getCanvasData();
+
+        expect(cropper.zoom(0.1).getCanvasData()).to.deep.equal(canvasData);
+        done();
+      },
+
+      zoom(event) {
+        event.preventDefault();
+      },
+    });
+  });
+});