1 files changed, 112 insertions, 0 deletions
diff --git a/spec/contracts/consumer/specs/project/merge_request/show.spec.js b/spec/contracts/consumer/specs/project/merge_request/show.spec.js
new file mode 100644
index 00000000000..8c6e029cb12
--- /dev/null
+++ b/spec/contracts/consumer/specs/project/merge_request/show.spec.js
@@ -0,0 +1,112 @@
+/* eslint-disable @gitlab/require-i18n-strings */
+
+import { pactWith } from 'jest-pact';
+
+import { DiffsBatch } from '../../../fixtures/project/merge_request/diffs_batch.fixture';
+import { Discussions } from '../../../fixtures/project/merge_request/discussions.fixture';
+import { DiffsMetadata } from '../../../fixtures/project/merge_request/diffs_metadata.fixture';
+import {
+  getDiffsBatch,
+  getDiffsMetadata,
+  getDiscussions,
+} from '../../../endpoints/project/merge_requests';
+
+const CONSUMER_NAME = 'MergeRequest#show';
+const CONSUMER_LOG = '../logs/consumer.log';
+const CONTRACT_DIR = '../contracts/project/merge_request/show';
+const DIFFS_BATCH_PROVIDER_NAME = 'Merge Request Diffs Batch Endpoint';
+const DISCUSSIONS_PROVIDER_NAME = 'Merge Request Discussions Endpoint';
+const DIFFS_METADATA_PROVIDER_NAME = 'Merge Request Diffs Metadata Endpoint';
+
+// API endpoint: /merge_requests/:id/diffs_batch.json
+pactWith(
+  {
+    consumer: CONSUMER_NAME,
+    provider: DIFFS_BATCH_PROVIDER_NAME,
+    log: CONSUMER_LOG,
+    dir: CONTRACT_DIR,
+  },
+
+  (provider) => {
+    describe(DIFFS_BATCH_PROVIDER_NAME, () => {
+      beforeEach(() => {
+        const interaction = {
+          state: 'a merge request with diffs exists',
+          ...DiffsBatch.request,
+          willRespondWith: DiffsBatch.success,
+        };
+        provider.addInteraction(interaction);
+      });
+
+      it('returns a successful body', () => {
+        return getDiffsBatch({
+          url: provider.mockService.baseUrl,
+        }).then((diffsBatch) => {
+          expect(diffsBatch).toEqual(DiffsBatch.body);
+        });
+      });
+    });
+  },
+);
+
+pactWith(
+  {
+    consumer: CONSUMER_NAME,
+    provider: DISCUSSIONS_PROVIDER_NAME,
+    log: CONSUMER_LOG,
+    dir: CONTRACT_DIR,
+  },
+
+  (provider) => {
+    describe(DISCUSSIONS_PROVIDER_NAME, () => {
+      beforeEach(() => {
+        const interaction = {
+          state: 'a merge request with discussions exists',
+          ...Discussions.request,
+          willRespondWith: Discussions.success,
+        };
+        provider.addInteraction(interaction);
+      });
+
+      it('return a successful body', () => {
+        return getDiscussions({
+          url: provider.mockService.baseUrl,
+        }).then((discussions) => {
+          expect(discussions).toEqual(Discussions.body);
+        });
+      });
+    });
+  },
+);
+
+pactWith(
+  {
+    consumer: CONSUMER_NAME,
+    provider: DIFFS_METADATA_PROVIDER_NAME,
+    log: CONSUMER_LOG,
+    dir: CONTRACT_DIR,
+  },
+
+  (provider) => {
+    describe(DIFFS_METADATA_PROVIDER_NAME, () => {
+      beforeEach(() => {
+        const interaction = {
+          state: 'a merge request exists',
+          ...DiffsMetadata.request,
+          willRespondWith: DiffsMetadata.success,
+        };
+        provider.addInteraction(interaction);
+      });
+
+      it('return a successful body', () => {
+        return getDiffsMetadata({
+          url: provider.mockService.baseUrl,
+        }).then((diffsMetadata) => {
+          expect(diffsMetadata).toEqual(DiffsMetadata.body);
+        });
+      });
+    });
+  },
+);
+
+/* eslint-enable @gitlab/require-i18n-strings */