Adds reporter for checking children of `.input-group`

Check that `.input-group` has at least one `.form-control` and at least
one of `.input-group-addon` or `.input-group-btn`.

Fixes #274
Closes #275

1 files changed, 9 insertions, 0 deletions

diff --git a/src/bootlint.js b/src/bootlint.js
index 6bf7c14..d58b5da 100644
--- a/src/bootlint.js
+++ b/src/bootlint.js
@@ -1049,6 +1049,15 @@ var LocationIndex = _location.LocationIndex;
             reporter('Button classes (`.btn`, `.btn-*`, `.navbar-btn`) cannot be used on `<a>`s within `.navbar-nav`s.', navbarNavAnchorBtns);
         }
     });
+    addLinter("E044", function lintInputGroupAddonChildren($, reporter) {
+        var badInputGroups = $('.input-group').filter(function () {
+            var inputGroup = $(this);
+            return !inputGroup.children('.form-control').length || !inputGroup.children('.input-group-addon, .input-group-btn').length;
+        });
+        if (badInputGroups.length) {
+            reporter('`.input-group` must have a `.form-control` and either an `.input-group-addon` or an `.input-group-btn`.', badInputGroups);
+        }
+    });
     addLinter("E045", function lintImgResponsiveOnNonImgs($, reporter) {
         var imgResponsiveNotOnImg = $('.img-responsive:not(img)');
         if (imgResponsiveNotOnImg.length) {