Add an option (i.e. --noFirefox) to only use Chrome when running tests

gulpfile.mjs

@@ -707,6 +707,9 @@ function runTests(testsName, { bot = false, xfaOnly = false } = {}) {
     if (process.argv.includes("--noChrome") || forceNoChrome) {
       args.push("--noChrome");
     }
+    if (process.argv.includes("--noFirefox")) {
+      args.push("--noFirefox");
+    }
     if (process.argv.includes("--headless")) {
       args.push("--headless");
     }
@@ -739,6 +742,9 @@ function makeRef(done, bot) {
   if (process.argv.includes("--noChrome") || forceNoChrome) {
     args.push("--noChrome");
   }
+  if (process.argv.includes("--noFirefox")) {
+    args.push("--noFirefox");
+  }
   if (process.argv.includes("--headless")) {
     args.push("--headless");
   }

test/test.mjs

@@ -69,6 +69,11 @@ function parseOptions() {
       describe: "Skip Chrome when running tests.",
       type: "boolean",
     })
+    .option("noFirefox", {
+      default: false,
+      describe: "Skip Firefox when running tests.",
+      type: "boolean",
+    })
     .option("noDownload", {
       default: false,
       describe: "Skip downloading of test PDFs.",
@@ -968,7 +973,13 @@ async function startBrowsers({ baseUrl, initializeSession }) {
   // prevent the disk from filling up over time.
   await puppeteer.trimCache();
 
-  const browserNames = options.noChrome ? ["firefox"] : ["firefox", "chrome"];
+  const browserNames = ["firefox", "chrome"];
+  if (options.noChrome) {
+    browserNames.splice(1, 1);
+  }
+  if (options.noFirefox) {
+    browserNames.splice(0, 1);
+  }
   for (const browserName of browserNames) {
     // The session must be pushed first and augmented with the browser once
     // it's initialized. The reason for this is that browser initialization