added pact-node-provider example

Author: thombergs

pact/pact-node-provider/app.js

@@ -1,21 +1,36 @@
-var createError = require('http-errors');
-var express = require('express');
-var path = require('path');
-var logger = require('morgan');
-
-var heroesRouter = require('./routes/heroes');
-
-var app = express();
+const createError = require('http-errors');
+const express = require('express');
+const path = require('path');
+const logger = require('morgan');
+const heroesRouter = require('./routes/heroes');
+const providerStateRouter = require('./routes/provider_state');
+const app = express();
 
 app.use(logger('dev'));
 app.use(express.json());
-app.use(express.urlencoded({ extended: false }));
+app.use(express.urlencoded({extended: false}));
 
 app.use('/heroes', heroesRouter);
 
+registerPactEndpoint();
+
 // catch 404 and forward to error handler
-app.use(function(req, res, next) {
-  next(createError(404));
+app.use(function (req, res, next) {
+    next(createError(404));
 });
 
 module.exports = app;
+
+/**
+ * Registers a special endpoint for pact provider tests that allows to
+ * set the server into a certain "provider state".
+ *
+ * This endpoint is only registered if the environment variable "PACT_MODE"
+ * is set to "true".
+ */
+function registerPactEndpoint() {
+    const pactMode = (process.env.PACT_MODE === 'true');
+    if (pactMode) {
+        app.use('/provider-state', providerStateRouter);
+    }
+}