buildx: imagetools

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

__tests__/buildx/imagetools.test.itg.ts

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+/**
+ * Copyright 2025 actions-toolkit authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {describe, expect, it} from '@jest/globals';
+import * as fs from 'fs';
+import * as path from 'path';
+
+import {ImageTools} from '../../src/buildx/imagetools';
+import {Image} from '../../src/types/oci/config';
+
+const fixturesDir = path.join(__dirname, '..', '.fixtures');
+
+const maybe = !process.env.GITHUB_ACTIONS || (process.env.GITHUB_ACTIONS === 'true' && process.env.ImageOS && process.env.ImageOS.startsWith('ubuntu')) ? describe : describe.skip;
+
+maybe('inspectImage', () => {
+  it('inspect single platform', async () => {
+    const image = await new ImageTools().inspectImage('moby/buildkit:latest@sha256:5769c54b98840147b74128f38fb0b0a049e24b11a75bd81664131edd2854593f');
+    const expectedImage = <Image>JSON.parse(fs.readFileSync(path.join(fixturesDir, 'imagetools-01.json'), {encoding: 'utf-8'}).trim());
+    expect(image).toEqual(expectedImage);
+  });
+  it('inspect multi platform', async () => {
+    const image = await new ImageTools().inspectImage('moby/buildkit:latest@sha256:86c0ad9d1137c186e9d455912167df20e530bdf7f7c19de802e892bb8ca16552');
+    const expectedImage = <Record<string, Image>>JSON.parse(fs.readFileSync(path.join(fixturesDir, 'imagetools-02.json'), {encoding: 'utf-8'}).trim());
+    expect(image).toEqual(expectedImage);
+  });
+});