Emit different warning message when jQuery and bootstrap.js are both absent; fixes #72

Gruntfile.js

@@ -54,7 +54,7 @@ module.exports = function (grunt) {
       options: {
         timeout: 10000
       },
-      files: ['test/fixtures/**/*.html', '!test/fixtures/jquery/missing.html', '!test/fixtures/charset/not-utf8.html']
+      files: ['test/fixtures/**/*.html', '!test/fixtures/jquery/missing.html', '!test/fixtures/jquery/and_bs_js_both_missing.html', '!test/fixtures/charset/not-utf8.html']
     },
     jshint: {
       options: {

src/bootlint.js

@@ -161,6 +161,24 @@ var LocationIndex = _location.LocationIndex;
         return runs;
     }
 
+    function bootstrapScriptsIn($) {
+        var longhands = $('script[src*="bootstrap.js"]').filter(function (i, script) {
+            var url = $(script).attr('src');
+            var filename = filenameFromUrl(url);
+            return filename === "bootstrap.js";
+        });
+        var minifieds = $('script[src*="bootstrap.min.js"]').filter(function (i, script) {
+            var url = $(script).attr('src');
+            var filename = filenameFromUrl(url);
+            return filename === "bootstrap.min.js";
+        });
+
+        return {
+            longhands: longhands,
+            minifieds: minifieds
+        };
+    }
+
     /**
      * @param {integer} id Unique string ID for this type of lint error. Of the form "E###" (e.g. "E123").
      * @param {string} message Human-readable string describing the error
@@ -333,7 +351,10 @@ var LocationIndex = _location.LocationIndex;
     });
     addLinter("W005", function lintJquery($, reporter) {
         var OLD_JQUERY = "Found what might be an outdated version of jQuery; Bootstrap requires jQuery v" + MIN_JQUERY_VERSION + " or higher";
-        var NO_JQUERY = "Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work";
+        var NO_JQUERY_BUT_BS_JS = "Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work";
+        var NO_JQUERY_NOR_BS_JS = "Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work; however, you might not be using Bootstrap's JavaScript";
+        var bsScripts = bootstrapScriptsIn($);
+        var hasBsJs = !!(bsScripts.minifieds.length || bsScripts.longhands.length);
         var theWindow = null;
         try {
             /*eslint-disable no-undef, block-scoped-var */
@@ -384,7 +405,7 @@ var LocationIndex = _location.LocationIndex;
             'script[src*="jQuery"]'
         ].join(','));
         if (!jqueries.length) {
-            reporter(NO_JQUERY);
+            reporter(hasBsJs ? NO_JQUERY_BUT_BS_JS : NO_JQUERY_NOR_BS_JS);
             return;
         }
         jqueries.each(function () {
@@ -420,24 +441,10 @@ var LocationIndex = _location.LocationIndex;
         }
     });
     addLinter("E007", function lintBootstrapJs($, reporter) {
-        var longhands = $('script[src*="bootstrap.js"]').filter(function (i, script) {
-            var url = $(script).attr('src');
-            var filename = filenameFromUrl(url);
-            return filename === "bootstrap.js";
-        });
-        if (!longhands.length) {
-            return;
+        var scripts = bootstrapScriptsIn($);
+        if (scripts.longhands.length && scripts.minifieds.length) {
+            reporter("Only one copy of Bootstrap's JS should be included; currently the webpage includes both bootstrap.js and bootstrap.min.js", scripts.longhands.add(scripts.minifieds));
         }
-        var minifieds = $('script[src*="bootstrap.min.js"]').filter(function (i, script) {
-            var url = $(script).attr('src');
-            var filename = filenameFromUrl(url);
-            return filename === "bootstrap.min.js";
-        });
-        if (!minifieds.length) {
-            return;
-        }
-
-        reporter("Only one copy of Bootstrap's JS should be included; currently the webpage includes both bootstrap.js and bootstrap.min.js", longhands.add(minifieds));
     });
     addLinter("W006", function lintTooltipsOnDisabledElems($, reporter) {
         var selector = [

test/bootlint_test.js

@@ -176,7 +176,7 @@ exports.bootlint = {
         test.done();
     },
     'jQuery': function (test) {
-        test.expect(4);
+        test.expect(5);
         test.deepEqual(lintHtml(utf8Fixture('jquery/present.html')),
             [],
             'should not complain when jQuery is present.');
@@ -188,7 +188,10 @@ exports.bootlint = {
             'should complain about old version of jQuery based on URL');
         test.deepEqual(lintHtml(utf8Fixture('jquery/missing.html')),
             ["Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work"],
-            'should complain when jQuery appears to be missing.');
+            "should complain when jQuery appears to be missing.");
+        test.deepEqual(lintHtml(utf8Fixture('jquery/and_bs_js_both_missing.html')),
+            ["Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work; however, you might not be using Bootstrap's JavaScript"],
+            "should complain differently when jQuery appears to be missing but Bootstrap's JS is also missing.");
         test.done();
     },
     'bootstrap[.min].js': function (test) {

test/fixtures/jquery/and_bs_js_both_missing.html

@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/qunit/1.14.0/qunit.min.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint">
+            <li data-lint="Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work"></li>
+        </ol>
+    </body>
+</html>

test/fixtures/jquery/missing.html

@@ -9,6 +9,7 @@
             <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
             <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
         <![endif]-->
+        <script src="/js/bootstrap.js"></script>
 
         <link rel="stylesheet" href="../../lib/qunit.css">
         <script src="https://cdnjs.cloudflare.com/ajax/libs/qunit/1.14.0/qunit.min.js"></script>
@@ -18,7 +19,7 @@
     <body>
         <div id="qunit"></div>
         <ol id="bootlint">
-            <li data-lint="Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work"></li>
+            <li data-lint="Unable to locate jQuery, which is required for Bootstrap's JavaScript plugins to work; however, you might not be using Bootstrap's JavaScript"></li>
         </ol>
     </body>
 </html>