test: added tests for scale_and_crop

Author: voidberg

src/plugins/__image_snapshots__/scale-and-crop-test-ts-applies-scale-and-crop-with-a-mix-of-exact-and-relative-dimensions-1-snap.png

@@ -0,0 +1,169 @@
+import { toMatchImageSnapshot } from 'jest-image-snapshot';
+import { ImageCache } from '../imagecache';
+
+expect.extend({ toMatchImageSnapshot });
+
+// TODO: Fix these tests.
+test('applies scale and crop with exact dimensions', async () => {
+  const imagecache = new ImageCache([
+    {
+      presetName: 'scale_and_crop',
+      actions: [
+        {
+          action: 'scale_and_crop',
+          config: {
+            width: 200,
+            height: 100,
+          },
+        },
+      ],
+    },
+  ]);
+
+  const image = await imagecache.render('./examples/in.png', 'scale_and_crop');
+  const imageBuffer = await image.toBuffer();
+  expect(imageBuffer).toMatchImageSnapshot({
+    failureThresholdType: 'percent',
+    failureThreshold: 10,
+  });
+});
+
+test('applies scale and crop with relative dimensions', async () => {
+  const imagecache = new ImageCache([
+    {
+      presetName: 'scale_and_crop',
+      actions: [
+        {
+          action: 'scale_and_crop',
+          config: {
+            width: '50%',
+            height: '50%',
+          },
+        },
+      ],
+    },
+  ]);
+
+  const image = await imagecache.render('./examples/in.png', 'scale_and_crop');
+  const imageBuffer = await image.toBuffer();
+  expect(imageBuffer).toMatchImageSnapshot({
+    failureThresholdType: 'percent',
+    failureThreshold: 10,
+  });
+});
+
+test('applies scale and crop with a mix of exact and relative dimensions', async () => {
+  const imagecache = new ImageCache([
+    {
+      presetName: 'scale_and_crop',
+      actions: [
+        {
+          action: 'scale_and_crop',
+          config: {
+            width: '50%',
+            height: 300,
+          },
+        },
+      ],
+    },
+  ]);
+
+  const image = await imagecache.render('./examples/in.png', 'scale_and_crop');
+  const imageBuffer = await image.toBuffer();
+  expect(imageBuffer).toMatchImageSnapshot({
+    failureThresholdType: 'percent',
+    failureThreshold: 10,
+  });
+});
+
+// test('does not apply scale when dimensions are missing', async () => {
+//   const imagecache = new ImageCache([
+//     {
+//       presetName: 'scale',
+//       actions: [
+//         {
+//           action: 'scale',
+//           config: {},
+//         },
+//       ],
+//     },
+//   ]);
+//
+//   const image = await imagecache.render('./examples/in.png', 'scale');
+//   const imageBuffer = await image.toBuffer();
+//   expect(imageBuffer).toMatchImageSnapshot({
+//     failureThresholdType: 'percent',
+//     failureThreshold: 1,
+//   });
+// });
+//
+// test('does not scale when upscale is false and final dimensions are bigger', async () => {
+//   const imagecache = new ImageCache([
+//     {
+//       presetName: 'scale',
+//       actions: [
+//         {
+//           action: 'scale',
+//           config: {
+//             width: 20000,
+//             height: 10000,
+//             upscale: false,
+//           },
+//         },
+//       ],
+//     },
+//   ]);
+//
+//   const image = await imagecache.render('./examples/in.png', 'scale');
+//   const imageBuffer = await image.toBuffer();
+//   expect(imageBuffer).toMatchImageSnapshot({
+//     failureThresholdType: 'percent',
+//     failureThreshold: 1,
+//   });
+// });
+//
+// test('applies scale when width is missing', async () => {
+//   const imagecache = new ImageCache([
+//     {
+//       presetName: 'scale',
+//       actions: [
+//         {
+//           action: 'scale',
+//           config: {
+//             height: 100,
+//           },
+//         },
+//       ],
+//     },
+//   ]);
+//
+//   const image = await imagecache.render('./examples/in.png', 'scale');
+//   const imageBuffer = await image.toBuffer();
+//   expect(imageBuffer).toMatchImageSnapshot({
+//     failureThresholdType: 'percent',
+//     failureThreshold: 10,
+//   });
+// });
+//
+// test('applies scale when height is missing', async () => {
+//   const imagecache = new ImageCache([
+//     {
+//       presetName: 'scale',
+//       actions: [
+//         {
+//           action: 'scale',
+//           config: {
+//             width: 200,
+//           },
+//         },
+//       ],
+//     },
+//   ]);
+//
+//   const image = await imagecache.render('./examples/in.png', 'scale');
+//   const imageBuffer = await image.toBuffer();
+//   expect(imageBuffer).toMatchImageSnapshot({
+//     failureThresholdType: 'percent',
+//     failureThreshold: 10,
+//   });
+// });