Sync with ember-template-lint

Author: NullVoxPopuli

docs/rules/template-no-trailing-spaces.md

@@ -4,31 +4,30 @@
 
 <!-- end auto-generated rule header -->
 
-Disallows trailing whitespace at the end of lines.
-
-Trailing whitespace is unnecessary and can cause issues with version control systems, where it may be flagged as changes.
-
-## Rule Details
-
-This rule detects and removes trailing spaces or tabs at the end of lines.
+Disallow trailing whitespace at the end of lines.
 
 ## Examples
 
-Examples of **incorrect** code for this rule:
+In examples below, `•` represents a trailing space character.
 
-```gjs
-<template>
-  <div>Hello</div>
-</template>
+This rule **forbids** the following:
+
+```hbs
+<div>test</div>••
+•••••
 ```
 
 ```gjs
 <template>
-  <div>Hello</div>
+  <div>Hello</div>••
 </template>
 ```
 
-Examples of **correct** code for this rule:
+This rule **allows** the following:
+
+```hbs
+<div>test</div>
+```
 
 ```gjs
 <template>
@@ -42,4 +41,4 @@ Examples of **correct** code for this rule:
 
 ## References
 
-- [eslint-plugin-ember template-no-trailing-spaces](https://github.com/ember-cli/eslint-plugin-ember/blob/master/docs/rules/template-no-trailing-spaces.md)
+- [git/formatting and whitespace](https://git-scm.com/book/en/v2/Customizing-Git-Git-Configuration#_formatting_and_whitespace)

tests/lib/rules/template-no-trailing-spaces.js

@@ -144,15 +144,9 @@ hbsRuleTester.run('template-no-trailing-spaces', rule, {
   valid: [
     'test',
     '   test',
-    `test
-`,
-    `
-`,
-    `  test
-`,
-    `{{#my-component}}
-  test
-{{/my-component}}`,
+    'test\n',
+    'test\n' + '\n',
+    '{{#my-component}}\n' + '  test\n' + '{{/my-component}}',
     `import { hbs } from 'ember-cli-htmlbars';
 
 test('it renders', async (assert) => {
@@ -177,55 +171,23 @@ test('it renders', async (assert) => {
       errors: [{ message: 'Trailing whitespace detected.' }],
     },
     {
-      code: `import { hbs } from 'ember-cli-htmlbars';
-
-test('it renders', async (assert) => {
-  await render(hbs\`  
-    <div class="parent">
-      <div class="child"></div>
-    </div>
-  \`);
-});`,
-      output: `import { hbs } from 'ember-cli-htmlbars';
-
-test('it renders', async (assert) => {
-  await render(hbs\`
-    <div class="parent">
-      <div class="child"></div>
-    </div>
-  \`);
-});`,
+      code: 'test\n \n',
+      output: 'test\n\n',
       errors: [{ message: 'Trailing whitespace detected.' }],
     },
     {
-      code: `import { hbs } from 'ember-cli-htmlbars';
-
-test('it renders', async (assert) => {
-  await render(hbs\`
-    <div></div>
-  
-    <div></div>
-  \`);
-});`,
-      output: `import { hbs } from 'ember-cli-htmlbars';
-
-test('it renders', async (assert) => {
-  await render(hbs\`
-    <div></div>
-
-    <div></div>
-  \`);
-});`,
+      code: '{{#my-component}}\n  test \n{{/my-component}}',
+      output: '{{#my-component}}\n  test\n{{/my-component}}',
       errors: [{ message: 'Trailing whitespace detected.' }],
     },
     {
-      code: 'test\n \n',
-      output: 'test\n\n',
+      code: "import { hbs } from 'ember-cli-htmlbars';\n\ntest('it renders', async (assert) => {\n  await render(hbs`  \n    <div class=\"parent\">\n      <div class=\"child\"></div>\n    </div>\n  `);\n});",
+      output: "import { hbs } from 'ember-cli-htmlbars';\n\ntest('it renders', async (assert) => {\n  await render(hbs`\n    <div class=\"parent\">\n      <div class=\"child\"></div>\n    </div>\n  `);\n});",
       errors: [{ message: 'Trailing whitespace detected.' }],
     },
     {
-      code: '{{#my-component}}\n  test \n{{/my-component}}',
-      output: '{{#my-component}}\n  test\n{{/my-component}}',
+      code: "import { hbs } from 'ember-cli-htmlbars';\n\ntest('it renders', async (assert) => {\n  await render(hbs`\n    <div></div>\n  \n    <div></div>\n  `);\n});",
+      output: "import { hbs } from 'ember-cli-htmlbars';\n\ntest('it renders', async (assert) => {\n  await render(hbs`\n    <div></div>\n\n    <div></div>\n  `);\n});",
       errors: [{ message: 'Trailing whitespace detected.' }],
     },
   ],