Support Multibranch pipelines in Jenkins

CHANGELOG.md

@@ -13,6 +13,8 @@
 
 ## Master
 
+- Jenkins: Respect `CHANGE_URL`/`CHANGE_ID` for GitHub and BitBucket Server [@azz][]
+
 # 4.4.0
 
 - Supports installation using Homebrew [@thii][]

package.json

@@ -111,8 +111,8 @@
     "jest-json-reporter": "^1.2.2",
     "lint-staged": "^7.3.0",
     "madge": "^3.2.0",
-    "prettier": "^1.14.2",
     "pkg": "^4.3.4",
+    "prettier": "^1.14.2",
     "release-it": "^7.6.1",
     "shx": "^0.3.2",
     "ts-jest": "^23.10.3",

source/ci_source/providers/Jenkins.ts

@@ -1,5 +1,6 @@
 import { Env, CISource } from "../ci_source"
 import { ensureEnvKeysExist, ensureEnvKeysAreInt } from "../ci_source_helpers"
+import { pullRequestParser } from "../../platforms/pullRequestParser"
 
 // https://jenkins.io/
 // https://wiki.jenkins.io/display/JENKINS/Building+a+software+project#Buildingasoftwareproject-belowJenkinsSetEnvironmentVariables
@@ -14,9 +15,8 @@ import { ensureEnvKeysExist, ensureEnvKeysAreInt } from "../ci_source_helpers"
  * in order to ensure that you have the build environment set up for PR integration.
  *
  * ### BitBucket Server
- * If using Bitbucket Server, make sure to provide both `ghprbGhRepository` and `ghprbPullId` as environment variables.
- * `ghprbGhRepository` is the path to your repository, e.g. `projects/team/repos/repositoryname`, while `ghprbPullId`
- * provides the id of a pull request (usually `env.CHANGE_ID`). Danger will skip execution if this id is not provided.
+ * If using Bitbucket Server, ensure you are using Multibranch Pipelines or Organization Folders.
+ * Danger will respect the `CHANGE_URL` and `CHANGE_ID` environment variables.
  *
  * With that set up, you can edit your job to add `yarn danger ci` at the build action.
  *
@@ -34,29 +34,45 @@ import { ensureEnvKeysExist, ensureEnvKeysAreInt } from "../ci_source_helpers"
 export class Jenkins implements CISource {
   constructor(private readonly env: Env) {}
 
+  private isJenkins() {
+    return ensureEnvKeysExist(this.env, ["JENKINS_URL"])
+  }
+
   get name(): string {
     return "Jenkins"
   }
 
   get isCI(): boolean {
-    return ensureEnvKeysExist(this.env, ["JENKINS_URL"])
+    return this.isJenkins()
   }
 
   get isPR(): boolean {
-    const mustHave = ["JENKINS_URL", "ghprbPullId", "ghprbGhRepository"]
-    const mustBeInts = ["ghprbPullId"]
-    return ensureEnvKeysExist(this.env, mustHave) && ensureEnvKeysAreInt(this.env, mustBeInts)
+    const isGitHubPR =
+      ensureEnvKeysExist(this.env, ["ghprbPullId", "ghprbGhRepository"]) &&
+      ensureEnvKeysAreInt(this.env, ["ghprbPullId"])
+    const isMultiBranchPR =
+      ensureEnvKeysExist(this.env, ["CHANGE_ID", "CHANGE_URL"]) && ensureEnvKeysAreInt(this.env, ["CHANGE_ID"])
+
+    return this.isJenkins() && (isMultiBranchPR || isGitHubPR)
   }
 
   get pullRequestID(): string {
-    return this.env.ghprbPullId
+    return this.env.ghprbPullId || this.env.CHANGE_ID
   }
 
   get repoSlug(): string {
+    if (this.env.CHANGE_URL) {
+      const result = pullRequestParser(this.env.CHANGE_URL)
+      if (!result) {
+        throw new Error(`Unable to get repository path from $CHANGE_URL`)
+      }
+
+      return result.repo
+    }
     return this.env.ghprbGhRepository
   }
 
   get ciRunURL() {
-    return process.env.BUILD_URL
+    return process.env.RUN_DISPLAY_URL || process.env.BUILD_URL
   }
 }

source/ci_source/providers/_tests/_jenkins.test.ts

@@ -1,22 +1,37 @@
 import { Jenkins } from "../Jenkins"
 import { getCISourceForEnv } from "../../get_ci_source"
 
-const correctEnv = {
-  ghprbGhRepository: "danger/danger-js",
-  ghprbPullId: "50",
-  JENKINS_URL: "https://danger.jenkins",
+const envs = {
+  ghprb: {
+    ghprbGhRepository: "danger/danger-js",
+    ghprbPullId: "50",
+    JENKINS_URL: "https://danger.jenkins",
+  },
+  multibranchGitHub: {
+    CHANGE_URL: "https://github.com/danger/danger-js/pull/50",
+    CHANGE_ID: "50",
+    JENKINS_URL: "https://danger.jenkins",
+  },
+  multibranchBBS: {
+    CHANGE_URL: "https://bitbucket.server/projects/PROJ/repos/REPO/pull-requests/50",
+    CHANGE_ID: "50",
+    JENKINS_URL: "https://danger.jenkins",
+  },
 }
 
+const types = Object.keys(envs)
+
 describe("being found when looking for CI", () => {
-  it("finds Jenkins with the right ENV", () => {
-    const ci = getCISourceForEnv(correctEnv)
+  it.each(types)("%s - finds Jenkins with the right ENV", type => {
+    const env = envs[type]
+    const ci = getCISourceForEnv(env)
     expect(ci).toBeInstanceOf(Jenkins)
   })
 })
 
 describe(".isCI", () => {
-  it("validates when JENKINS_URL is present in environment", () => {
-    const jenkins = new Jenkins(correctEnv)
+  it.each(types)("%s - validates when JENKINS_URL is present in environment", type => {
+    const jenkins = new Jenkins(envs[type])
     expect(jenkins.isCI).toBeTruthy()
   })
 
@@ -27,8 +42,8 @@ describe(".isCI", () => {
 })
 
 describe(".isPR", () => {
-  it("validates when all Jenkins environment variables are set", () => {
-    const jenkins = new Jenkins(correctEnv)
+  it.each(types)("%s - validates when all Jenkins environment variables are set", type => {
+    const jenkins = new Jenkins(envs[type])
     expect(jenkins.isPR).toBeTruthy()
   })
 
@@ -37,39 +52,60 @@ describe(".isPR", () => {
     expect(jenkins.isPR).toBeFalsy()
   })
 
-  const envs = ["JENKINS_URL", "ghprbPullId", "ghprbGhRepository"]
-  envs.forEach((key: string) => {
-    const env = {
-      ...correctEnv,
-      [key]: null,
-    }
+  describe.each(types)("%s", type => {
+    const envVars = Object.keys(envs[type])
+    envVars.forEach((key: string) => {
+      const env = {
+        ...envs[type],
+        [key]: null,
+      }
 
-    it(`does not validate when ${key} is missing`, () => {
-      const jenkins = new Jenkins(env)
-      expect(jenkins.isPR).toBeFalsy()
+      it(`does not validate when ${key} is missing`, () => {
+        const jenkins = new Jenkins(env)
+        expect(jenkins.isPR).toBeFalsy()
+      })
     })
   })
 
-  it("needs to have a PR number", () => {
+  it("ghprb - needs to have a PR number", () => {
     const env = {
-      ...correctEnv,
+      ...envs.ghprb,
       ghprbPullId: "not a number",
     }
     const jenkins = new Jenkins(env)
     expect(jenkins.isPR).toBeFalsy()
   })
+
+  it("multibranch - needs to have a PR number", () => {
+    const env = {
+      ...envs.multibranchGitHub,
+      CHANGE_ID: "not a number",
+    }
+    const jenkins = new Jenkins(env)
+    expect(jenkins.isPR).toBeFalsy()
+  })
 })
 
 describe(".pullRequestID", () => {
-  it("pulls it out of environment", () => {
-    const jenkins = new Jenkins(correctEnv)
+  it.each(types)("%s - pulls it out of environment", type => {
+    const jenkins = new Jenkins(envs[type])
     expect(jenkins.pullRequestID).toEqual("50")
   })
 })
 
 describe(".repoSlug", () => {
-  it("pulls it out of environment", () => {
-    const jenkins = new Jenkins(correctEnv)
+  it("ghprb - pulls it out of environment", () => {
+    const jenkins = new Jenkins(envs.ghprb)
     expect(jenkins.repoSlug).toEqual("danger/danger-js")
   })
+
+  it("multibranch-github - pulls it out of environment", () => {
+    const jenkins = new Jenkins(envs.multibranchGitHub)
+    expect(jenkins.repoSlug).toEqual("danger/danger-js")
+  })
+
+  it("multibranch-bb-server - pulls it out of environment", () => {
+    const jenkins = new Jenkins(envs.multibranchBBS)
+    expect(jenkins.repoSlug).toEqual("projects/PROJ/repos/REPO")
+  })
 })