Add component tests for ModalHeader, IconChecked, and Conformance result components

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/components/IconChecked.test.js

@@ -0,0 +1,33 @@
+import { describe, it, expect } from 'vitest';
+import { mount } from '@vue/test-utils';
+import IconChecked from '@/components/icons/IconChecked.vue';
+
+describe('IconChecked', () => {
+  it('shows gray frame when not checked', () => {
+    const wrapper = mount(IconChecked, {
+      props: { isChecked: false },
+    });
+    const imgs = wrapper.findAll('img[alt="checkbox"]');
+    // When not checked: gray frame visible, blue frame hidden, check mark hidden
+    expect(imgs.length).toBe(1);
+  });
+
+  it('shows blue frame and check mark when checked', () => {
+    const wrapper = mount(IconChecked, {
+      props: { isChecked: true },
+    });
+    const imgs = wrapper.findAll('img[alt="checkbox"]');
+    // When checked: blue frame + check mark visible (2 imgs), gray frame hidden
+    expect(imgs.length).toBe(2);
+  });
+
+  it('updates rendering when isChecked prop changes', async () => {
+    const wrapper = mount(IconChecked, {
+      props: { isChecked: false },
+    });
+    expect(wrapper.findAll('img[alt="checkbox"]').length).toBe(1);
+
+    await wrapper.setProps({ isChecked: true });
+    expect(wrapper.findAll('img[alt="checkbox"]').length).toBe(2);
+  });
+});