[GitHub] Number of commits between branches/tags/commits (#8394)

closes #6901

services/github/github-commits-difference.tester.js

@@ -0,0 +1,43 @@
+import { isMetric } from '../test-validators.js'
+import { createServiceTester } from '../tester.js'
+export const t = await createServiceTester()
+
+t.create('Commits difference - correct, between branches')
+  .get('/microsoft/vscode.json?base=standalone/0.1.x&head=release/1.21')
+  .expectBadge({
+    label: 'commits difference',
+    message: isMetric,
+    color: 'blue',
+  })
+
+t.create('Commits difference - correct, between tags')
+  .get('/microsoft/vscode.json?base=1.58.0&head=1.59.0')
+  .expectBadge({
+    label: 'commits difference',
+    message: isMetric,
+    color: 'blue',
+  })
+
+t.create('Commits difference - correct, between commits')
+  .get('/microsoft/vscode.json?base=3d82ef7&head=82f2db7')
+  .expectBadge({
+    label: 'commits difference',
+    message: isMetric,
+    color: 'blue',
+  })
+
+t.create('Commits difference - incorrect, between commits')
+  .get('/microsoft/vscode.json?base=fffffff&head=82f2db7')
+  .expectBadge({
+    label: 'commits difference',
+    message: 'could not establish commit difference between refs',
+    color: 'red',
+  })
+
+t.create('Commits difference - incorrect, missing head')
+  .get('/microsoft/vscode.json?base=fffffff')
+  .expectBadge({
+    label: 'commits difference',
+    message: 'invalid query parameter: head',
+    color: 'red',
+  })