From 0d840ef1173d80dbf455e27bd96cf40d3b0aae37 Mon Sep 17 00:00:00 2001
From: Demetrio Girardi <dgirardi@prebid.org>
Date: Tue, 30 Nov 2021 09:13:12 -0800
Subject: [PATCH] Build system: improve build for development workflow

This adds a "test-only" gulp task that runs only tests (without clean/lint) and makes the single-spec test environment consistent with the whole-suite case.
---
 gulpfile.js                  | 3 ++-
 karma.conf.maker.js          | 2 +-
 test/helpers/prebidGlobal.js | 1 +
 test/test_deps.js            | 3 +++
 test/test_index.js           | 4 +---
 5 files changed, 8 insertions(+), 5 deletions(-)
 create mode 100644 test/test_deps.js

diff --git a/gulpfile.js b/gulpfile.js
index c86357372f1..34103b25be2 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -389,7 +389,8 @@ gulp.task('build-bundle-dev', gulp.series(makeDevpackPkg, gulpBundle.bind(null,
 gulp.task('build-bundle-prod', gulp.series(makeWebpackPkg, gulpBundle.bind(null, false)));
 
 // public tasks (dependencies are needed for each task since they can be ran on their own)
-gulp.task('test', gulp.series(clean, lint, test));
+gulp.task('test-only', test);
+gulp.task('test', gulp.series(clean, lint, 'test-only'));
 
 gulp.task('test-coverage', gulp.series(clean, testCoverage));
 gulp.task(viewCoverage);
diff --git a/karma.conf.maker.js b/karma.conf.maker.js
index abff3f043b9..be51947dae8 100644
--- a/karma.conf.maker.js
+++ b/karma.conf.maker.js
@@ -111,7 +111,7 @@ module.exports = function(codeCoverage, browserstack, watchMode, file) {
   var webpackConfig = newWebpackConfig(codeCoverage);
   var plugins = newPluginsArray(browserstack);
 
-  var files = file ? ['test/helpers/prebidGlobal.js', file] : ['test/test_index.js'];
+  var files = file ? ['test/test_deps.js', file] : ['test/test_index.js'];
   // This file opens the /debug.html tab automatically.
   // It has no real value unless you're running --watch, and intend to do some debugging in the browser.
   if (watchMode) {
diff --git a/test/helpers/prebidGlobal.js b/test/helpers/prebidGlobal.js
index 597076ab0db..94776a5242b 100644
--- a/test/helpers/prebidGlobal.js
+++ b/test/helpers/prebidGlobal.js
@@ -1,3 +1,4 @@
 window.$$PREBID_GLOBAL$$ = (window.$$PREBID_GLOBAL$$ || {});
+window.$$PREBID_GLOBAL$$.installedModules = (window.$$PREBID_GLOBAL$$.installedModules || []);
 window.$$PREBID_GLOBAL$$.cmd = window.$$PREBID_GLOBAL$$.cmd || [];
 window.$$PREBID_GLOBAL$$.que = window.$$PREBID_GLOBAL$$.que || [];
diff --git a/test/test_deps.js b/test/test_deps.js
new file mode 100644
index 00000000000..e535154b799
--- /dev/null
+++ b/test/test_deps.js
@@ -0,0 +1,3 @@
+require('test/helpers/prebidGlobal.js');
+require('test/mocks/adloaderStub.js');
+require('test/mocks/xhr.js');
diff --git a/test/test_index.js b/test/test_index.js
index 53d75e36176..883f4d0590c 100644
--- a/test/test_index.js
+++ b/test/test_index.js
@@ -1,6 +1,4 @@
-require('test/helpers/prebidGlobal.js');
-require('test/mocks/adloaderStub.js');
-require('test/mocks/xhr.js');
+require('./test_deps.js');
 
 var testsContext = require.context('.', true, /_spec$/);
 testsContext.keys().forEach(testsContext);