WIP: summary test

__tests__/summary.test.ts

@@ -1,5 +1,5 @@
 import {expect, jest, test} from '@jest/globals'
-import {Changes, ConfigurationOptions, Scorecard} from '../src/schemas'
+import {Change, Changes, ConfigurationOptions, Scorecard} from '../src/schemas'
 import * as summary from '../src/summary'
 import * as core from '@actions/core'
 import {createTestChange} from './fixtures/create-test-change'
@@ -109,6 +109,38 @@ test('prints headline as h1', () => {
   expect(text).toContain('<h1>Dependency Review</h1>')
 })
 
+test('returns minimal summary in case the core.summary is too large for a PR comment', () => {
+  let changes: Changes = [
+    createTestChange({name: 'lodash', version: '1.2.3'}),
+    createTestChange({name: 'colors', version: '2.3.4'}),
+    createTestChange({name: '@foo/bar', version: '*'}),
+  ]
+
+  let minSummary: string = summary.addSummaryToSummary(
+    changes,
+    emptyInvalidLicenseChanges,
+    emptyChanges,
+    scorecard,
+    defaultConfig
+  )
+
+  // side effect DR report into core.summary as happens in main.ts
+  summary.addScannedDependencies(changes)
+  const text = core.summary.stringify()
+
+  expect(text).toContain('<h1>Dependency Review</h1>')
+  expect(minSummary).toContain('# Dependency Review')
+
+  expect(text).toContain('lodash')
+  expect(text).toContain('colors')
+  expect(text).toContain('@foo/bar')
+  expect(minSummary).not.toContain('lodash')
+  expect(minSummary).not.toContain('colors')
+  expect(minSummary).not.toContain('@foo/bar')
+
+  expect(text.length).toBeGreaterThan(minSummary.length)
+})
+
 test('only includes "No vulnerabilities or license issues found"-message if both are configured and nothing was found', () => {
   summary.addSummaryToSummary(
     emptyChanges,

src/summary.ts

@@ -10,9 +10,9 @@ const icons = {
   warning: '⚠️'
 }
 
-// generates the initial DR summmary and applies to the Action's core.summary
-// returns a string array of all the formatted values in the event we need
-// to replace them in the PR comment due to length restrictions
+// generates the DR report summmary and caches it to the Action's core.summary.
+// returns the DR summary string, ready to be posted as a PR comment if the
+// final DR report is too large
 export function addSummaryToSummary(
   vulnerableChanges: Changes,
   invalidLicenseChanges: InvalidLicenseChanges,