From b6b5579f67babe5cf072ff520f4780bf2a891f1f Mon Sep 17 00:00:00 2001
From: Eric Liu <ericyl.us@gmail.com>
Date: Sun, 16 Mar 2025 17:26:44 -0700
Subject: [PATCH] test(unordered-list): add unit tests

---
 tests/UnorderedList.test.svelte               |  39 ------
 tests/UnorderedList/UnorderedList.test.svelte |  30 ++++
 tests/UnorderedList/UnorderedList.test.ts     | 128 ++++++++++++++++++
 3 files changed, 158 insertions(+), 39 deletions(-)
 delete mode 100644 tests/UnorderedList.test.svelte
 create mode 100644 tests/UnorderedList/UnorderedList.test.svelte
 create mode 100644 tests/UnorderedList/UnorderedList.test.ts

diff --git a/tests/UnorderedList.test.svelte b/tests/UnorderedList.test.svelte
deleted file mode 100644
index f2d3292d..00000000
--- a/tests/UnorderedList.test.svelte
+++ /dev/null
@@ -1,39 +0,0 @@
-<script lang="ts">
-  import { UnorderedList, ListItem, Link } from "carbon-components-svelte";
-</script>
-
-<UnorderedList>
-  <ListItem>Unordered list item</ListItem>
-  <ListItem>Unordered list item</ListItem>
-  <ListItem>Unordered list item</ListItem>
-</UnorderedList>
-
-<UnorderedList>
-  <ListItem>
-    <Link href="#">Unordered list item</Link>
-  </ListItem>
-  <ListItem>
-    <Link href="#">Unordered list item</Link>
-  </ListItem>
-  <ListItem>
-    <Link href="#">Unordered list item</Link>
-  </ListItem>
-</UnorderedList>
-
-<UnorderedList>
-  <ListItem>
-    Unordered list level 1
-    <UnorderedList nested>
-      <ListItem>Unordered list level 2</ListItem>
-      <ListItem>
-        Unordered list level 3
-        <UnorderedList nested>
-          <ListItem>Unordered list level 3</ListItem>
-          <ListItem>Unordered list level 3</ListItem>
-        </UnorderedList>
-      </ListItem>
-    </UnorderedList>
-  </ListItem>
-  <ListItem>Unordered list level 1</ListItem>
-  <ListItem>Unordered list level 1</ListItem>
-</UnorderedList>
diff --git a/tests/UnorderedList/UnorderedList.test.svelte b/tests/UnorderedList/UnorderedList.test.svelte
new file mode 100644
index 00000000..96ada196
--- /dev/null
+++ b/tests/UnorderedList/UnorderedList.test.svelte
@@ -0,0 +1,30 @@
+<script lang="ts">
+  import { UnorderedList, ListItem } from "carbon-components-svelte";
+
+  export let nested = false;
+  export let expressive = false;
+  export let items: string[] = ["Item 1", "Item 2", "Item 3"];
+  export let nestedItems: string[] = [];
+</script>
+
+<UnorderedList
+  {nested}
+  {expressive}
+  on:click
+  on:mouseover
+  on:mouseenter
+  on:mouseleave
+>
+  {#each items as item}
+    <ListItem>
+      {item}
+      {#if nested && nestedItems.length > 0}
+        <UnorderedList nested>
+          {#each nestedItems as nestedItem}
+            <ListItem>{nestedItem}</ListItem>
+          {/each}
+        </UnorderedList>
+      {/if}
+    </ListItem>
+  {/each}
+</UnorderedList>
diff --git a/tests/UnorderedList/UnorderedList.test.ts b/tests/UnorderedList/UnorderedList.test.ts
new file mode 100644
index 00000000..4dd4d702
--- /dev/null
+++ b/tests/UnorderedList/UnorderedList.test.ts
@@ -0,0 +1,128 @@
+import { render, screen } from "@testing-library/svelte";
+import { user } from "../setup-tests";
+import UnorderedList from "./UnorderedList.test.svelte";
+
+describe("UnorderedList", () => {
+  it("should render with default props", () => {
+    render(UnorderedList);
+
+    const list = screen.getByRole("list");
+    expect(list).toHaveClass("bx--list--unordered");
+    expect(list).not.toHaveClass("bx--list--nested");
+    expect(list).not.toHaveClass("bx--list--expressive");
+
+    const items = screen.getAllByRole("listitem");
+    expect(items).toHaveLength(3);
+    expect(items[0]).toHaveTextContent("Item 1");
+    expect(items[1]).toHaveTextContent("Item 2");
+    expect(items[2]).toHaveTextContent("Item 3");
+  });
+
+  it("should support nested lists", () => {
+    render(UnorderedList, {
+      props: {
+        nested: true,
+        nestedItems: ["Nested 1", "Nested 2"],
+      },
+    });
+
+    const lists = screen.getAllByRole("list");
+    expect(lists).toHaveLength(4); // Main list + 3 nested lists (one for each main item)
+
+    const mainList = lists[0];
+    expect(mainList).toHaveClass("bx--list--unordered");
+    expect(mainList).toHaveClass("bx--list--nested");
+
+    const nestedLists = lists.slice(1);
+    nestedLists.forEach((list) => {
+      expect(list).toHaveClass("bx--list--unordered");
+      expect(list).toHaveClass("bx--list--nested");
+    });
+
+    const items = screen.getAllByRole("listitem");
+    expect(items).toHaveLength(9); // 3 main items + (2 nested items × 3)
+  });
+
+  it("should support expressive styles", () => {
+    render(UnorderedList, {
+      props: { expressive: true },
+    });
+
+    const list = screen.getByRole("list");
+    expect(list).toHaveClass("bx--list--expressive");
+  });
+
+  it("should support custom items", () => {
+    const customItems = ["Custom 1", "Custom 2", "Custom 3", "Custom 4"];
+    render(UnorderedList, {
+      props: { items: customItems },
+    });
+
+    const items = screen.getAllByRole("listitem");
+    expect(items).toHaveLength(customItems.length);
+    items.forEach((item, index) => {
+      expect(item).toHaveTextContent(customItems[index]);
+    });
+  });
+
+  describe("events", () => {
+    it("should emit click event", async () => {
+      const { component } = render(UnorderedList);
+      const list = screen.getByRole("list");
+
+      const mock = vi.fn();
+      component.$on("click", mock);
+
+      await user.click(list);
+      expect(mock).toHaveBeenCalled();
+    });
+
+    test.each(["mouseover", "mouseenter", "mouseleave"])(
+      "should emit %s event",
+      (eventName) => {
+        const { component } = render(UnorderedList);
+        const list = screen.getByRole("list");
+
+        const mock = vi.fn();
+        component.$on(eventName, mock);
+
+        const event = new MouseEvent(eventName);
+        list.dispatchEvent(event);
+
+        expect(mock).toHaveBeenCalled();
+      },
+    );
+  });
+
+  describe("accessibility", () => {
+    it("should have correct ARIA role", () => {
+      render(UnorderedList);
+
+      const list = screen.getByRole("list");
+      expect(list.tagName).toBe("UL");
+
+      const items = screen.getAllByRole("listitem");
+      items.forEach((item) => {
+        expect(item.tagName).toBe("LI");
+      });
+    });
+
+    it("should maintain list structure with nested items", () => {
+      render(UnorderedList, {
+        props: {
+          nested: true,
+          nestedItems: ["Nested 1", "Nested 2"],
+        },
+      });
+
+      const lists = screen.getAllByRole("list");
+      lists.forEach((list) => {
+        expect(list.tagName).toBe("UL");
+        expect(list.children).toBeTruthy();
+        Array.from(list.children).forEach((child) => {
+          expect(child.tagName).toBe("LI");
+        });
+      });
+    });
+  });
+});