Noissue - Enable tests to run on other browser versions

test/all.js

Index: test/all.js
===================================================================
--- a/test/all.js
+++ b/test/all.js
@@ -21,6 +21,24 @@
 const path = require("path");
 const {exec} = require("child_process");
 
+function getBrowserBinary(module, browser)
+{
+  let spec = process.env[`${browser.toUpperCase()}_BINARY`];
+  let version = module.oldestCompatibleVersion;
+
+  if (spec)
+  {
+    if (spec == "installed")
+      return Promise.resolve("");
+    if (spec.startswith("path:"))
+      return Promise.resolve(spec.substr(5));
+    if (spec.startsWith("download:"))
+      version = spec.substr(9);

[tlucas, 2018/09/26 08:20:16]

Are we ok with not checking whether someone tries to donwload a version older
then the latest compatible?

[Sebastian Noack, 2018/09/26 11:00:20]

I am. Since this needs to be explicitly requested, I assume people to know what
they do, and rather keep this change simple.

+  }
+
+  return module.ensureBrowser(version);
+}
+
 for (let browser of glob.sync("./test/browsers/*.js"))
 {
   let module = require(path.resolve(browser));
@@ -32,7 +50,7 @@
     before(function()
     {
       return Promise.all([
-        module.ensureBrowser(),
+        getBrowserBinary(module, path.basename(browser, ".js")),
         new Promise((resolve, reject) =>
         {
           exec(