#421 adding singleDriverStart to be used to start a single driver instance (#568)

Author: lthurr

docs/CLI.md

@@ -38,6 +38,9 @@ selenium-standalone start -- hub
 selenium-standalone start -- node --grid-url http://localhost:4444/grid/register
 selenium-standalone start -- node --grid-url http://localhost:4444/grid/register -port 5556
 
+# start a single driver
+selenium-standalone start --singleDriverStart=chrome
+
 # don't forget to specify downloaded version for v4 alpha
 ./bin/selenium-standalone start --version=4.0.0-alpha-7
 

lib/start.js

@@ -50,6 +50,14 @@ async function start(_opts) {
     opts.drivers = defaultConfig.drivers;
   }
 
+  if (opts.singleDriverStart) {
+    const singleDriver = opts.drivers[opts.singleDriverStart];
+    if (singleDriver) {
+      opts.drivers = {};
+      opts.drivers[opts.singleDriverStart] = singleDriver;
+    }
+  }
+
   const fsPaths = computeFsPaths({
     seleniumVersion: opts.version,
     drivers: opts.drivers,

test/programmatic.js

@@ -88,4 +88,13 @@ describe('programmatic use', function () {
       }
     });
   });
+
+  it('should start with singleDriverStart options', (done) => {
+    testStart(done, { singleDriverStart: 'firefox', drivers: { chrome: {} , firefox: {} }, seleniumArgs: ['--port', '4446']}, (cp) => {
+      if (cp.spawnargs && cp.spawnargs.some(containsChrome)) {
+        done(new Error('Chrome driver should not be loaded'));
+        return false;
+      }
+    });
+  });
 });