Reorganize some Gdn_Format test fixtures

tests/Library/Vanilla/Formatting/GdnFormatTest.php

@@ -7,6 +7,7 @@
 
 namespace VanillaTests\Library\Vanilla\Formatting\Quill;
 
+use Vanilla\Formatting\Formats\RichFormat;
 use VanillaTests\Library\Vanilla\Formatting\FixtureRenderingTestCase;
 
 /**
@@ -136,6 +137,70 @@ public function provideHtmlToHtml(): array {
         return $this->createFixtureDataProvider('/formats/html/html');
     }
 
+    /**
+     * Test results of Gdn_Format::excerpt with rich-formatted content.
+     *
+     * @param string $fixtureDir The directory of the fixture to use for the testCase.
+     * @dataProvider provideRichExcerpts
+     */
+    public function testRichExcerpt(string $fixtureDir) {
+        list($body, $expected) = $this->getFixture(self::FIXTURE_DIR . "/rich/excerpt/" . $fixtureDir);
+        $actual = \Gdn_Format::excerpt($body, RichFormat::FORMAT_KEY);
+        $this->assertEquals(
+            $expected,
+            $actual,
+            "Expected excerpt outputs for fixture $fixtureDir did not match."
+        );
+    }
+
+    /**
+     * Provide data for testing the excerpt method with the rich format.
+     *
+     * @return array
+     */
+    public function provideRichExcerpts(): array {
+        return $this->createFixtureDataProvider("/formats/rich/excerpt");
+    }
+
+    /**
+     * Test results of Gdn_Format::plainText with rich-formatted content.
+     *
+     * @param string $fixtureDir The directory of the fixture to use for the testCase.
+     * @dataProvider provideRichPlainText
+     */
+    public function testRichPlainText(string $fixtureDir) {
+        list($body, $expected) = $this->getFixture(self::FIXTURE_DIR . "/rich/plain-text/" . $fixtureDir);
+        $actual = \Gdn_Format::plainText($body, RichFormat::FORMAT_KEY);
+        $this->assertEquals(
+            $expected,
+            $actual,
+            "Expected excerpt outputs for fixture $fixtureDir did not match."
+        );
+    }
+
+    /**
+     * Provide data for testing the plainText method.
+     *
+     * @return array
+     */
+    public function provideRichPlainText(): array {
+        return $this->createFixtureDataProvider("/formats/rich/plain-text");
+    }
+
+    /**
+     * Test using a rich-format array of operations with the quoteEmbed method.
+     */
+    public function testRichQuoteEmbedAsArray() {
+        $richEmbed = [
+            ["insert" => "Hello world."]
+        ];
+
+        $this->assertEquals(
+            "<p>Hello world.</p>",
+            \Gdn_Format::quoteEmbed($richEmbed, RichFormat::FORMAT_KEY)
+        );
+    }
+
     /**
      * Test the wysiwyg HTML rendering.
      *

tests/fixtures/rich-posts/excerpt-test.json → tests/fixtures/formats/rich/excerpt/quote-spoiler-paragraph/input.json

@@ -48,4 +48,4 @@
   {
     "insert": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.\n"
   }
-]
+]

tests/fixtures/formats/rich/excerpt/quote-spoiler-paragraph/output.txt

@@ -0,0 +1 @@
+https://vanillaforums.example/discussion/comment/1#Comment_1 This is a spoiler. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute…

tests/fixtures/formats/rich/plain-text/single-paragraph/input.json

@@ -0,0 +1,5 @@
+[
+    {
+        "insert": "Hello world.\n"
+    }
+]

tests/fixtures/formats/rich/plain-text/single-paragraph/output.txt

@@ -0,0 +1 @@
+Hello world.