1 files changed, 38 insertions, 0 deletions
diff --git a/library/cropperjs/test/specs/options/wheelZoomRatio.spec.js b/library/cropperjs/test/specs/options/wheelZoomRatio.spec.js
new file mode 100644
index 000000000..7d128358d
--- /dev/null
+++ b/library/cropperjs/test/specs/options/wheelZoomRatio.spec.js
@@ -0,0 +1,38 @@
+describe('wheelZoomRatio (option)', () => {
+  it('should be `0.1` by default', (done) => {
+    const image = window.createImage();
+    const cropper = new Cropper(image, {
+      ready() {
+        const canvasData = cropper.getCanvasData();
+        const wheelEvent = window.createEvent('wheel');
+
+        wheelEvent.deltaY = -1;
+        cropper.cropper.dispatchEvent(wheelEvent);
+        expect(canvasData.width * 1.1).to.equal(cropper.getCanvasData().width);
+        done();
+      },
+    });
+
+    expect(cropper.options.wheelZoomRatio).to.equal(0.1);
+  });
+
+  it('should match the given zoom ratio', (done) => {
+    const image = window.createImage();
+    const wheelZoomRatio = 0.2;
+    const cropper = new Cropper(image, {
+      wheelZoomRatio,
+
+      ready() {
+        const canvasData = cropper.getCanvasData();
+        const wheelEvent = window.createEvent('wheel');
+
+        wheelEvent.deltaY = -1;
+        cropper.cropper.dispatchEvent(wheelEvent);
+        expect(canvasData.width * (1 + wheelZoomRatio)).to.equal(cropper.getCanvasData().width);
+        done();
+      },
+    });
+
+    expect(cropper.options.wheelZoomRatio).to.equal(wheelZoomRatio);
+  });
+});