Rename appuser -> dbuser in documentation (#216)

Author: benjie

README.md

@@ -108,19 +108,23 @@ unaffected by the iteration you've been applying to your development database
 Create your database role (if desired), database and shadow database:
 
 ```bash
-createuser --pwprompt appuser
-createdb myapp --owner=appuser
-createdb myapp_shadow --owner=appuser
+createuser --pwprompt dbowner
+createdb myapp --owner=dbowner
+createdb myapp_shadow --owner=dbowner
 ```
 
+> For an in depth-discussion on the different users and roles typically involved
+> in database and migration management, please see issue
+> [#215](https://github.com/graphile/migrate/issues/215).
+
 Export your database URL, shadow database URL, and a "root" database URL which
 should be a superuser account connection to any **other** database (most
 PostgreSQL servers have a default database called `postgres` which is a good
 choice for this).
 
 ```bash
-export DATABASE_URL="postgres://appuser:password@localhost/myapp"
-export SHADOW_DATABASE_URL="postgres://appuser:password@localhost/myapp_shadow"
+export DATABASE_URL="postgres://dbowner:password@localhost/myapp"
+export SHADOW_DATABASE_URL="postgres://dbowner:password@localhost/myapp_shadow"
 
 export ROOT_DATABASE_URL="postgres://postgres:postgres@localhost/postgres"
 ```

__tests__/settings.test.ts

@@ -320,12 +320,12 @@ describe("gmrc path", () => {
     mockFs.restore();
     mockFs({
       [DEFAULT_GMRC_PATH]: `
-        { "connectionString": "postgres://appuser:apppassword@host:5432/defaultdb" }
+        { "connectionString": "postgres://dbowner:password@host:5432/defaultdb" }
       `,
     });
     const settings = await getSettings();
     expect(settings.connectionString).toEqual(
-      "postgres://appuser:apppassword@host:5432/defaultdb",
+      "postgres://dbowner:password@host:5432/defaultdb",
     );
     mockFs.restore();
   });
@@ -334,15 +334,15 @@ describe("gmrc path", () => {
     mockFs.restore();
     mockFs({
       [DEFAULT_GMRC_PATH]: `
-        { "connectionString": "postgres://appuser:apppassword@host:5432/defaultdb" }
+        { "connectionString": "postgres://dbowner:password@host:5432/defaultdb" }
       `,
       ".other-gmrc": `
-        { "connectionString": "postgres://appuser:apppassword@host:5432/otherdb" }
+        { "connectionString": "postgres://dbowner:password@host:5432/otherdb" }
       `,
     });
     const settings = await getSettings({ configFile: ".other-gmrc" });
     expect(settings.connectionString).toEqual(
-      "postgres://appuser:apppassword@host:5432/otherdb",
+      "postgres://dbowner:password@host:5432/otherdb",
     );
     mockFs.restore();
   });
@@ -362,12 +362,12 @@ describe("gmrc from JS", () => {
     mockFs({
       [DEFAULT_GMRCJS_PATH]: /* JavaScript */ `\
 module.exports = {
-  connectionString: "postgres://appuser:apppassword@host:5432/gmrcjs_test",
+  connectionString: "postgres://dbowner:password@host:5432/gmrcjs_test",
 };`,
     });
     const settings = await getSettings();
     expect(settings.connectionString).toEqual(
-      "postgres://appuser:apppassword@host:5432/gmrcjs_test",
+      "postgres://dbowner:password@host:5432/gmrcjs_test",
     );
     mockFs.restore();
   });
@@ -382,12 +382,12 @@ module.exports = {
     mockFs({
       [DEFAULT_GMRC_COMMONJS_PATH]: /* JavaScript */ `\
 module.exports = {
-  connectionString: "postgres://appuser:apppassword@host:5432/gmrc_commonjs_test",
+  connectionString: "postgres://dbowner:password@host:5432/gmrc_commonjs_test",
 };`,
     });
     const settings = await getSettings();
     expect(settings.connectionString).toEqual(
-      "postgres://appuser:apppassword@host:5432/gmrc_commonjs_test",
+      "postgres://dbowner:password@host:5432/gmrc_commonjs_test",
     );
     mockFs.restore();
   });

src/commands/init.ts

@@ -46,15 +46,15 @@ export async function init(options: InitArgv = {}): Promise<void> {
    *
    * RECOMMENDATION: use \`DATABASE_URL\` envvar instead.
    */
-  // "connectionString": "postgres://appuser:apppassword@host:5432/appdb",
+  // "connectionString": "postgres://dbowner:password@host:5432/appdb",
 
   /*
    * shadowConnectionString: like connectionString, but this is used for the
    * shadow database (which will be reset frequently).
    *
    * RECOMMENDATION: use \`SHADOW_DATABASE_URL\` envvar instead.
    */
-  // "shadowConnectionString": "postgres://appuser:apppassword@host:5432/appdb_shadow",
+  // "shadowConnectionString": "postgres://dbowner:password@host:5432/appdb_shadow",
 
   /*
    * rootConnectionString: like connectionString, but this is used for