1 files changed, 50 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/rich_content_editor/services/build_html_to_markdown_renderer_spec.js b/spec/frontend/vue_shared/components/rich_content_editor/services/build_html_to_markdown_renderer_spec.js
new file mode 100644
index 00000000000..0e8610a22f5
--- /dev/null
+++ b/spec/frontend/vue_shared/components/rich_content_editor/services/build_html_to_markdown_renderer_spec.js
@@ -0,0 +1,50 @@
+import buildHTMLToMarkdownRenderer from '~/vue_shared/components/rich_content_editor/services/build_html_to_markdown_renderer';
+
+describe('HTMLToMarkdownRenderer', () => {
+  let baseRenderer;
+  let htmlToMarkdownRenderer;
+  const NODE = { nodeValue: 'mock_node' };
+
+  beforeEach(() => {
+    baseRenderer = {
+      trim: jest.fn(input => `trimmed ${input}`),
+      getSpaceCollapsedText: jest.fn(input => `space collapsed ${input}`),
+      getSpaceControlled: jest.fn(input => `space controlled ${input}`),
+      convert: jest.fn(),
+    };
+  });
+
+  describe('TEXT_NODE visitor', () => {
+    it('composes getSpaceControlled, getSpaceCollapsedText, and trim services', () => {
+      htmlToMarkdownRenderer = buildHTMLToMarkdownRenderer(baseRenderer);
+
+      expect(htmlToMarkdownRenderer.TEXT_NODE(NODE)).toBe(
+        `space controlled trimmed space collapsed ${NODE.nodeValue}`,
+      );
+    });
+  });
+
+  describe('LI OL, LI UL visitor', () => {
+    const oneLevelNestedList = '\n    * List item 1\n    * List item 2';
+    const twoLevelNestedList = '\n  * List item 1\n    * List item 2';
+    const spaceInContentList = '\n  * List    item 1\n  * List item 2';
+
+    it.each`
+      list                  | indentSpaces | result
+      ${oneLevelNestedList} | ${2}         | ${'\n  * List item 1\n  * List item 2'}
+      ${oneLevelNestedList} | ${3}         | ${'\n   * List item 1\n   * List item 2'}
+      ${oneLevelNestedList} | ${6}         | ${'\n      * List item 1\n      * List item 2'}
+      ${twoLevelNestedList} | ${4}         | ${'\n    * List item 1\n        * List item 2'}
+      ${spaceInContentList} | ${1}         | ${'\n * List    item 1\n * List item 2'}
+    `('changes the list indentation to $indentSpaces spaces', ({ list, indentSpaces, result }) => {
+      htmlToMarkdownRenderer = buildHTMLToMarkdownRenderer(baseRenderer, {
+        subListIndentSpaces: indentSpaces,
+      });
+
+      baseRenderer.convert.mockReturnValueOnce(list);
+
+      expect(htmlToMarkdownRenderer['LI OL, LI UL'](NODE, list)).toBe(result);
+      expect(baseRenderer.convert).toHaveBeenCalledWith(NODE, list);
+    });
+  });
+});