From 2567f1639ca896b98f4ec77608a0b4b318670e29 Mon Sep 17 00:00:00 2001
From: enzo360 <55434771+enzo360@users.noreply.github.com>
Date: Fri, 18 Dec 2020 09:12:37 +0100
Subject: [PATCH] Fix multiple reporting of same warnings in
 `vue/no-unregistered-component` (#1382)

* fix multiple reporting of unregistered components

* add tests

* fix linter error
---
 lib/rules/no-unregistered-components.js       |  2 +-
 tests/lib/rules/no-unregistered-components.js | 38 +++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/lib/rules/no-unregistered-components.js b/lib/rules/no-unregistered-components.js
index 3ae283284..6e6cb2ada 100644
--- a/lib/rules/no-unregistered-components.js
+++ b/lib/rules/no-unregistered-components.js
@@ -126,7 +126,7 @@ module.exports = {
           usedComponentNodes.push({ node, name: node.value.value })
         },
         /** @param {VElement} node */
-        "VElement[name='template']:exit"() {
+        "VElement[name='template'][parent.type='VDocumentFragment']:exit"() {
           // All registered components, transformed to kebab-case
           const registeredComponentNames = registeredComponents.map(
             ({ name }) => casing.kebabCase(name)
diff --git a/tests/lib/rules/no-unregistered-components.js b/tests/lib/rules/no-unregistered-components.js
index a50e3c0f0..27739b78a 100644
--- a/tests/lib/rules/no-unregistered-components.js
+++ b/tests/lib/rules/no-unregistered-components.js
@@ -458,6 +458,25 @@ tester.run('no-unregistered-components', rule, {
         }
         </script>
       `
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <CustomComponentWithNamedSlots>
+            <template #slotA>
+              <div>Text</div>
+            </template>
+          </CustomComponentWithNamedSlots>
+        </template>
+        <script>
+        export default {
+          components: {
+            CustomComponentWithNamedSlots
+          }
+        }
+        </script>
+      `
     }
   ],
   invalid: [
@@ -668,6 +687,25 @@ tester.run('no-unregistered-components', rule, {
           line: 3
         }
       ]
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <CustomComponentWithNamedSlots>
+            <template #slotA>
+              <div>Text</div>
+            </template>
+          </CustomComponentWithNamedSlots>
+        </template>
+      `,
+      errors: [
+        {
+          message:
+            'The "CustomComponentWithNamedSlots" component has been used but not registered.',
+          line: 3
+        }
+      ]
     }
   ]
 })