feat: return release info in publish and add success and fail h…

…ooks (#11)

README.md

@@ -53,6 +53,26 @@ Execute a shell command to generate the release note.
 
 Execute a shell command to publish the release.
 
+| Command property | Description                                                                                                                                               |
+|------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `exit code`      | Any non `0` code is considered as an unexpected error and will stop the `semantic-release` execution with an error.                                       |
+| `stdout`         | Only the `release` information must be written to `stdout` as parseable JSON (for example `{"name": "Release name", "url": "http://url/release/1.0.0"}`). |
+| `stderr`         | Can be used for logging.                                                                                                                                  |
+
+## success
+
+Execute a shell command to notify of a successful release.
+
+| Command property | Description                                                                                                         |
+|------------------|---------------------------------------------------------------------------------------------------------------------|
+| `exit code`      | Any non `0` code is considered as an unexpected error and will stop the `semantic-release` execution with an error. |
+| `stdout`         | Can be used for logging.                                                                                            |
+| `stderr`         | Can be used for logging.                                                                                            |
+
+## fail
+
+Execute a shell command to notify of a failed release.
+
 | Command property | Description                                                                                                         |
 |------------------|---------------------------------------------------------------------------------------------------------------------|
 | `exit code`      | Any non `0` code is considered as an unexpected error and will stop the `semantic-release` execution with an error. |

index.js

@@ -1,4 +1,5 @@
 const {castArray, isPlainObject} = require('lodash');
+const parseJson = require('parse-json');
 const SemanticReleaseError = require('@semantic-release/error');
 const execScript = require('./lib/exec-script');
 const verifyConfig = require('./lib/verify-config');
@@ -46,7 +47,16 @@ async function generateNotes(pluginConfig, params) {
 }
 
 async function publish(pluginConfig, params) {
+  const stdout = await execScript(pluginConfig, params);
+  return stdout.trim() ? parseJson(stdout) : undefined;
+}
+
+async function success(pluginConfig, params) {
+  await execScript(pluginConfig, params);
+}
+
+async function fail(pluginConfig, params) {
   await execScript(pluginConfig, params);
 }
 
-module.exports = {verifyConditions, analyzeCommits, verifyRelease, generateNotes, publish};
+module.exports = {verifyConditions, analyzeCommits, verifyRelease, generateNotes, publish, success, fail};

package.json

@@ -19,7 +19,8 @@
     "@semantic-release/error": "^2.1.0",
     "debug": "^3.1.0",
     "execa": "^0.9.0",
-    "lodash": "^4.17.4"
+    "lodash": "^4.17.4",
+    "parse-json": "^4.0.0"
   },
   "devDependencies": {
     "ava": "^0.25.0",

test/fail.test.js

@@ -0,0 +1,29 @@
+import test from 'ava';
+import {stub} from 'sinon';
+import {fail} from '..';
+
+stub(process.stdout, 'write');
+stub(process.stderr, 'write');
+
+test.beforeEach(t => {
+  // Mock logger
+  t.context.log = stub();
+  t.context.error = stub();
+  t.context.logger = {log: t.context.log, error: t.context.error};
+});
+
+test.serial('Return the value fail script wrote to stdout', async t => {
+  const pluginConfig = {
+    cmd: './test/fixtures/echo-args.sh',
+  };
+  const params = {logger: t.context.logger};
+
+  await t.notThrows(fail(pluginConfig, params));
+});
+
+test.serial('Throw "Error" if the fail script does not returns 0', async t => {
+  const pluginConfig = {cmd: 'exit 1'};
+  const params = {logger: t.context.logger};
+
+  await t.throws(fail(pluginConfig, params), Error);
+});

test/publish.test.js

@@ -13,11 +13,35 @@ test.beforeEach(t => {
   t.context.logger = {log: t.context.log, error: t.context.error};
 });
 
-test.serial('Return if the publish script returns 0', async t => {
-  const pluginConfig = {cmd: 'exit 0'};
-  const params = {logger: t.context.logger, options: {}};
+test.serial('Parse JSON returned by publish script', async t => {
+  const pluginConfig = {
+    cmd:
+      './test/fixtures/echo-args.sh {\\"name\\": \\"Release name\\", \\"url\\": \\"https://host.com/release/1.0.0\\"}',
+  };
+  const params = {logger: t.context.logger};
+
+  const result = await publish(pluginConfig, params);
+  t.deepEqual(result, {name: 'Release name', url: 'https://host.com/release/1.0.0'});
+});
+
+test.serial('Return "undefined" if the publish script wrtite nothing to stdout', async t => {
+  const pluginConfig = {
+    cmd: './test/fixtures/echo-args.sh',
+  };
+  const params = {logger: t.context.logger};
+
+  const result = await publish(pluginConfig, params);
+  t.is(result, undefined);
+});
+
+test.serial('Throw JSONError if publish script write invalid JSON to stdout', async t => {
+  const pluginConfig = {
+    cmd: './test/fixtures/echo-args.sh invalid_json',
+  };
+  const params = {logger: t.context.logger};
 
-  await t.notThrows(publish(pluginConfig, params));
+  const error = await t.throws(publish(pluginConfig, params));
+  t.is(error.name, 'JSONError');
 });
 
 test.serial('Throw "Error" if the publish script does not returns 0', async t => {

test/success.test.js

@@ -0,0 +1,29 @@
+import test from 'ava';
+import {stub} from 'sinon';
+import {success} from '..';
+
+stub(process.stdout, 'write');
+stub(process.stderr, 'write');
+
+test.beforeEach(t => {
+  // Mock logger
+  t.context.log = stub();
+  t.context.error = stub();
+  t.context.logger = {log: t.context.log, error: t.context.error};
+});
+
+test.serial('Return the value success script wrote to stdout', async t => {
+  const pluginConfig = {
+    cmd: './test/fixtures/echo-args.sh',
+  };
+  const params = {logger: t.context.logger};
+
+  await t.notThrows(success(pluginConfig, params));
+});
+
+test.serial('Throw "Error" if the success script does not returns 0', async t => {
+  const pluginConfig = {cmd: 'exit 1'};
+  const params = {logger: t.context.logger};
+
+  await t.throws(success(pluginConfig, params), Error);
+});