chore: migrate test cases from Chai to Jest

src/template/hash.spec.ts

@@ -0,0 +1,42 @@
+import { toPromise } from '../util'
+import { Hash } from './hash'
+import { Context } from '../context'
+
+describe('Hash', function () {
+  it('should parse "reverse"', async function () {
+    const hash = await toPromise(new Hash('reverse').render(new Context({ foo: 3 })))
+    expect(hash).toHaveProperty('reverse')
+    expect(hash.reverse).toBeTruthy()
+  })
+  it('should parse "num:foo"', async function () {
+    const hash = await toPromise(new Hash('num:foo').render(new Context({ foo: 3 })))
+    expect(hash.num).toBe(3)
+  })
+  it('should parse "num:3"', async function () {
+    const hash = await toPromise(new Hash('num:3').render(new Context()))
+    expect(hash.num).toBe(3)
+  })
+  it('should parse "num: arr[0]"', async function () {
+    const hash = await toPromise(new Hash('num:3').render(new Context({ arr: [3] })))
+    expect(hash.num).toBe(3)
+  })
+  it('should parse "num: 2.3"', async function () {
+    const hash = await toPromise(new Hash('num:2.3').render(new Context()))
+    expect(hash.num).toBe(2.3)
+  })
+  it('should parse "num:bar.coo"', async function () {
+    const pending = new Hash('num:bar.coo').render(new Context({ bar: { coo: 3 } }))
+    const hash = await toPromise(pending)
+    expect(hash.num).toBe(3)
+  })
+  it('should parse "num1:2.3 reverse,num2:bar.coo\n num3: arr[0]"', async function () {
+    const ctx = new Context({ bar: { coo: 3 }, arr: [4] })
+    const hash = await toPromise(new Hash('num1:2.3 reverse,num2:bar.coo\n num3: arr[0]').render(ctx))
+    expect(hash).toEqual({
+      num1: 2.3,
+      reverse: true,
+      num2: 3,
+      num3: 4
+    })
+  })
+})