fix: parameterize integration tests' db credentials (#319)

* add: read db credentials from .env

* remove: console.log

* fix: default to default pg user and password

integration-tests/helpers/use-db.js

@@ -1,7 +1,16 @@
+const path = require("path");
+require("dotenv").config({ path: path.join(__dirname, "../.env") });
+
 const { dropDatabase, createDatabase } = require("pg-god");
 const { createConnection } = require("typeorm");
 
-const path = require("path");
+const DB_USERNAME = process.env.DB_USERNAME || "postgres";
+const DB_PASSWORD = process.env.DB_PASSWORD || "";
+const DB_URL = `postgres://${DB_USERNAME}:${DB_PASSWORD}@localhost/medusa-integration`;
+const pgGodCredentials = {
+  user: DB_USERNAME,
+  password: DB_PASSWORD,
+};
 
 const DbTestUtil = {
   db_: null,
@@ -16,7 +25,7 @@ const DbTestUtil = {
 
   shutdown: async function () {
     await this.db_.close();
-    return dropDatabase({ databaseName });
+    return dropDatabase({ databaseName }, pgGodCredentials);
   },
 };
 
@@ -36,11 +45,11 @@ module.exports = {
     );
 
     const databaseName = "medusa-integration";
-    await createDatabase({ databaseName });
+    await createDatabase({ databaseName }, pgGodCredentials);
 
     const connection = await createConnection({
       type: "postgres",
-      url: "postgres://localhost/medusa-integration",
+      url: DB_URL,
       migrations: [`${migrationDir}/*.js`],
     });
 
@@ -60,7 +69,7 @@ module.exports = {
     const entities = modelsLoader({}, { register: false });
     const dbConnection = await createConnection({
       type: "postgres",
-      url: "postgres://localhost/medusa-integration",
+      url: DB_URL,
       entities,
     });