Init rule & add basic tests

Author: armano2

docs/rules/no-extra-space-between-attributes.md

@@ -0,0 +1,36 @@
+# This rule warns about the usage of extra whitespaces between attributes (no-extra-space-between-attributes)
+
+Please describe the origin of the rule here.
+
+
+## Rule Details
+
+This rule aims to...
+
+Examples of **incorrect** code for this rule:
+
+```js
+
+// fill me in
+
+```
+
+Examples of **correct** code for this rule:
+
+```js
+
+// fill me in
+
+```
+
+### Options
+
+If there are any options, describe them here. Otherwise, delete this section.
+
+## When Not To Use It
+
+Give a short description of when it would be appropriate to turn off this rule.
+
+## Further Reading
+
+If there are other links that describe the issue this rule addresses, please include them here in a bulleted list.

lib/rules/no-extra-space-between-attributes.js

@@ -0,0 +1,41 @@
+/**
+ * @fileoverview This rule warns about the usage of extra whitespaces between attributes
+ * @author Armano
+ */
+'use strict'
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    docs: {
+      description: 'This rule warns about the usage of extra whitespaces between attributes',
+      category: 'Stylistic Issues',
+      recommended: false
+    },
+    fixable: 'whitespace',  // or "code" or "whitespace"
+    schema: [
+      // fill in your schema
+    ]
+  },
+
+  create (context) {
+    // variables should be defined here
+
+    // ----------------------------------------------------------------------
+    // Helpers
+    // ----------------------------------------------------------------------
+
+    // any helper functions should go here or else delete this section
+
+    // ----------------------------------------------------------------------
+    // Public
+    // ----------------------------------------------------------------------
+
+    return {
+      // give me methods
+    }
+  }
+}

tests/lib/rules/no-extra-space-between-attributes.js

@@ -0,0 +1,105 @@
+/**
+ * @fileoverview This rule warns about the usage of extra whitespaces between attributes
+ * @author Armano
+ */
+'use strict'
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+
+const rule = require('../../../lib/rules/no-extra-space-between-attributes')
+const RuleTester = require('eslint').RuleTester
+
+// ------------------------------------------------------------------------------
+// Tests
+// ------------------------------------------------------------------------------
+
+const ruleTester = new RuleTester({
+  parser: 'vue-eslint-parser',
+  parserOptions: { ecmaVersion: 2015 }
+})
+
+ruleTester.run('no-extra-space-between-attributes', rule, {
+  valid: [
+    {
+      filename: 'test.vue',
+      code: `
+      <template>
+        <div></div>
+        <div />
+        <div class="foo"></div>
+        <div class="foo" @click="bar"></div>
+        <div class="foo"></div>
+        <div class="foo"
+        :style="foo"></div>
+        <div class="foo"
+        :style="foo"
+        ></div>
+        <div class="foo"
+        :style="foo" />
+      </template>
+      `
+    }
+  ],
+
+  invalid: [
+    {
+      code: '<template><div     /></template>',
+      output: '<template><div /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    },
+    {
+      code: '<template><div   class="foo"  /></template>',
+      output: '<template><div class="foo" /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }, {
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    },
+    {
+      code: '<template><div   :class="foo"  /></template>',
+      output: '<template><div :class="foo" /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }, {
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    },
+    {
+      code: '<template><div foo="" class="foo"  /></template>',
+      output: '<template><div foo="" class="foo" /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    },
+    {
+      code: '<template><div v-foo="" class="foo"  /></template>',
+      output: '<template><div v-foo="" class="foo" /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    },
+    {
+      code: '<template><div v-foo="" \n         class="foo"  /></template>',
+      output: '<template><div v-foo=""\n         class="foo" /></template>',
+      errors: [{
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }, {
+        message: 'Extra whitespace detected.',
+        type: 'VText'
+      }]
+    }
+  ]
+})