feat(release-please): add default branch input option

action.yml

@@ -38,6 +38,9 @@ inputs:
   version-file:
     description: 'provide a path to a version file to increment (used by ruby releaser)'
     required: false
+  default-branch:
+    description: 'branch to open pull release PR against (detected by default)'
+    required: false
 runs:
   using: 'node12'
   main: 'dist/index.js'

index.js

@@ -16,6 +16,7 @@ async function main () {
   const changelogTypes = core.getInput('changelog-types')
   const command = core.getInput('command') ? core.getInput('command') : undefined
   const versionFile = core.getInput('version-file') ? core.getInput('version-file') : undefined
+  const defaultBranch = core.getInput('default-branch') ? core.getInput('default-branch') : undefined
 
   // Parse the changelogTypes if there are any
   let changelogSections
@@ -60,7 +61,8 @@ async function main () {
       label: RELEASE_LABEL,
       bumpMinorPreMajor,
       changelogSections,
-      versionFile
+      versionFile,
+      defaultBranch
     })
     const pr = await release.run()
     if (pr) {

test/release-please.js

@@ -46,6 +46,61 @@ describe('release-please-action', () => {
     })
   })
 
+  it('both opens PR to a different default branch and tags GitHub releases by default', async () => {
+    const output = {}
+    core.setOutput = (name, value) => {
+      output[name] = value
+    }
+    const input = {
+      'release-type': 'node',
+      'default-branch': 'dev'
+    }
+    core.getInput = (name) => {
+      return input[name]
+    }
+    const createRelease = sinon.stub().returns({
+      upload_url: 'http://example.com',
+      tag_name: 'v1.0.0'
+    })
+    action.getGitHubRelease = () => {
+      class Release {}
+      Release.prototype.createRelease = createRelease
+      return Release
+    }
+    const releasePR = sinon.stub().returns(25)
+    const buildStatic = sinon.stub().returns({
+      run: releasePR
+    })
+    action.getReleasePRFactory = () => {
+      return {
+        buildStatic
+      }
+    }
+    await action.main()
+    sinon.assert.calledOnce(createRelease)
+    sinon.assert.calledOnce(releasePR)
+    sinon.assert.calledWith(buildStatic, 'node', {
+      apiUrl: 'https://api.github.com',
+      bumpMinorPreMajor: false,
+      changelogSections: undefined,
+      defaultBranch: 'dev',
+      fork: undefined,
+      label: 'autorelease: pending',
+      monorepoTags: false,
+      packageName: undefined,
+      path: undefined,
+      repoUrl: undefined,
+      token: undefined,
+      versionFile: undefined
+    })
+    assert.deepStrictEqual(output, {
+      release_created: true,
+      upload_url: 'http://example.com',
+      tag_name: 'v1.0.0',
+      pr: 25
+    })
+  })
+
   it('only opens PR, if command set to release-pr', async () => {
     const output = {}
     core.setOutput = (name, value) => {