Add some release tests to increase coverage

packages/core/src/releases.ts

@@ -168,7 +168,7 @@ const categorizePullRequests = (
 	if (categories.length === 0) {
 		return [
 			{
-				pullRequests: pullRequests,
+				pullRequests,
 				labels: [],
 				'collapse-after': 0,
 			},

packages/core/tests/releases.test.ts

@@ -0,0 +1,230 @@
+import nock from 'nock'
+import { Context } from '../src/context.js'
+import { getOctokit } from '../src/release-drafter-octokit.js'
+import { findReleases, generateChangeLog } from '../src/releases.js'
+import {
+	GitHubRelease,
+	PullRequest,
+	ReleaseDrafterConfig,
+} from '../src/types.js'
+
+const octokit = getOctokit('TEST')
+
+describe('releases', () => {
+	beforeAll(() => {
+		nock.disableNetConnect()
+	})
+
+	describe('findReleases', () => {
+		it('finds no release safely', async () => {
+			const context = new Context(octokit, {
+				owner: 'release-drafter',
+				repo: 'release-drafter',
+				defaultBranch: 'main',
+			})
+
+			nock('https://api.github.com')
+				.get('/repos/release-drafter/release-drafter/releases?per_page=100')
+				.reply(200, { total_count: 0, items: [] })
+
+			const actual = await findReleases({
+				context,
+				targetCommitish: 'refs/heads/main',
+				filterByCommitish: true,
+				tagPrefix: 'v',
+			})
+			expect(actual).toEqual({
+				draftRelease: undefined,
+				lastRelease: undefined,
+			})
+		})
+
+		it('finds one release as latest', async () => {
+			const context = new Context(octokit, {
+				owner: 'release-drafter',
+				repo: 'release-drafter',
+				defaultBranch: 'main',
+			})
+
+			nock('https://api.github.com')
+				.get('/repos/release-drafter/release-drafter/releases?per_page=100')
+				.reply(200, {
+					total_count: 1,
+					items: [
+						{
+							target_commitish: 'refs/heads/main',
+							tag_name: 'v0.1.0',
+							draft: false,
+						},
+					],
+				})
+
+			const actual = await findReleases({
+				context,
+				targetCommitish: 'refs/heads/main',
+				filterByCommitish: true,
+				tagPrefix: 'v',
+			})
+			expect(actual).toEqual({
+				draftRelease: undefined,
+				lastRelease: {
+					target_commitish: 'refs/heads/main',
+					tag_name: 'v0.1.0',
+					draft: false,
+				},
+			})
+		})
+
+		it('finds releases correctly', async () => {
+			const context = new Context(octokit, {
+				owner: 'release-drafter',
+				repo: 'release-drafter',
+				defaultBranch: 'main',
+			})
+
+			nock('https://api.github.com')
+				.get('/repos/release-drafter/release-drafter/releases?per_page=100')
+				.reply(200, {
+					total_count: 3,
+					items: [
+						{
+							target_commitish: 'refs/heads/main',
+							tag_name: 'v0.2.1',
+							draft: true,
+						},
+						{
+							target_commitish: 'refs/heads/main',
+							tag_name: 'v0.2.0',
+							draft: false,
+						},
+						{
+							target_commitish: 'refs/heads/main',
+							tag_name: 'v0.1.0',
+							draft: false,
+						},
+					],
+				})
+
+			const actual = await findReleases({
+				context,
+				targetCommitish: 'refs/heads/main',
+				filterByCommitish: true,
+				tagPrefix: 'v',
+			})
+			expect(actual).toEqual({
+				draftRelease: {
+					target_commitish: 'refs/heads/main',
+					tag_name: 'v0.2.1',
+					draft: true,
+				},
+				lastRelease: {
+					target_commitish: 'refs/heads/main',
+					tag_name: 'v0.2.0',
+					draft: false,
+				},
+			})
+		})
+	})
+
+	describe('generateChangeLog', () => {
+		const pr = {
+			number: 123,
+			title: 'feat(example): An example feat',
+			author: { login: 'testymctesterface' },
+			labels: { nodes: [{ name: 'example' }] },
+		} as unknown as PullRequest
+
+		const config = {
+			'category-template': '$TITLE',
+			'change-template': '$TITLE (#$NUMBER) @$AUTHOR',
+			'change-title-escapes': '',
+			'no-changes-template': 'no changes',
+			'exclude-labels': [],
+			'include-labels': [],
+			categories: [
+				{
+					title: 'Example',
+					labels: ['example'],
+				},
+				{
+					title: 'ABC',
+					labels: ['a', 'b', 'c'],
+				},
+				{
+					title: 'XYZ',
+					labels: ['x', 'y', 'z'],
+				},
+				{
+					title: 'Uncategorized',
+					labels: [],
+				},
+			],
+		} as unknown as ReleaseDrafterConfig
+
+		it('generates no change', () => {
+			const actual = generateChangeLog([], config)
+			expect(actual).toBe('no changes')
+		})
+
+		it('generates basic change log', () => {
+			const actual = generateChangeLog(
+				[
+					{
+						...pr,
+						labels: { nodes: [{ name: 'example' }] },
+					} as unknown as PullRequest,
+				],
+				config,
+			)
+			expect(actual).toBe(
+				'Example\n\nfeat(example): An example feat (#123) @testymctesterface',
+			)
+		})
+
+		it('adds to uncategorized if labels dont match', () => {
+			const actual = generateChangeLog(
+				[
+					{
+						...pr,
+						labels: { nodes: [{ name: 'unknown' }] },
+					} as unknown as PullRequest,
+				],
+				config,
+			)
+			expect(actual).toBe(
+				'Uncategorized\n\nfeat(example): An example feat (#123) @testymctesterface',
+			)
+		})
+
+		it('adds to multiple categories if applicable', () => {
+			const actual = generateChangeLog(
+				[
+					{
+						...pr,
+						labels: { nodes: [{ name: 'a' }, { name: 'x' }] },
+					} as unknown as PullRequest,
+				],
+				config,
+			)
+			expect(actual).toBe(
+				'ABC\n\nfeat(example): An example feat (#123) @testymctesterface\n\n' +
+					'XYZ\n\nfeat(example): An example feat (#123) @testymctesterface',
+			)
+		})
+
+		it('lands in correct category with multiple label hits', () => {
+			const actual = generateChangeLog(
+				[
+					{
+						...pr,
+						labels: { nodes: [{ name: 'a' }, { name: 'b' }, { name: 'c' }] },
+					} as unknown as PullRequest,
+				],
+				config,
+			)
+			expect(actual).toBe(
+				'ABC\n\nfeat(example): An example feat (#123) @testymctesterface',
+			)
+		})
+	})
+})