test(server-renderer): implement ssrRenderList tests (#726)

packages/server-renderer/__tests__/ssrRenderList.spec.ts

@@ -1,3 +1,53 @@
-test('ssr: renderList', () => {
-  // TODO
+import { ssrRenderList } from '../src/helpers/ssrRenderList'
+
+describe('ssr: renderList', () => {
+  let stack: string[] = []
+
+  beforeEach(() => {
+    stack = []
+  })
+
+  it('should render items in an array', () => {
+    ssrRenderList(['1', '2', '3'], (item, index) =>
+      stack.push(`node ${index}: ${item}`)
+    )
+    expect(stack).toEqual(['node 0: 1', 'node 1: 2', 'node 2: 3'])
+  })
+
+  it('should render characters of a string', () => {
+    ssrRenderList('abc', (item, index) => stack.push(`node ${index}: ${item}`))
+    expect(stack).toEqual(['node 0: a', 'node 1: b', 'node 2: c'])
+  })
+
+  it('should render integers 1 through N when given a number N', () => {
+    ssrRenderList(3, (item, index) => stack.push(`node ${index}: ${item}`))
+    expect(stack).toEqual(['node 0: 1', 'node 1: 2', 'node 2: 3'])
+  })
+
+  it('should render properties in an object', () => {
+    ssrRenderList({ a: 1, b: 2, c: 3 }, (item, key, index) =>
+      stack.push(`node ${index}/${key}: ${item}`)
+    )
+    expect(stack).toEqual(['node 0/a: 1', 'node 1/b: 2', 'node 2/c: 3'])
+  })
+
+  it('should render an item for entry in an iterable', () => {
+    const iterable = function*() {
+      yield 1
+      yield 2
+      yield 3
+    }
+
+    ssrRenderList(iterable(), (item, index) =>
+      stack.push(`node ${index}: ${item}`)
+    )
+    expect(stack).toEqual(['node 0: 1', 'node 1: 2', 'node 2: 3'])
+  })
+
+  it('should not render items when source is undefined', () => {
+    ssrRenderList(undefined, (item, index) =>
+      stack.push(`node ${index}: ${item}`)
+    )
+    expect(stack).toEqual([])
+  })
 })