chore: migrate test cases from Chai to Jest

test/e2e/eval-value.spec.ts

@@ -0,0 +1,21 @@
+import { Liquid } from '../..'
+
+describe('#evalValue()', function () {
+  var engine: Liquid
+  beforeEach(() => { engine = new Liquid({ globals: { foo: 'FOO' } }) })
+
+  it('should support boolean', async function () {
+    const val = await engine.evalValue('true')
+    expect(val).toBe(true)
+  })
+
+  it('should support binary expression with Context', async function () {
+    const val = await engine.evalValue('a > b', { a: 1, b: 2 })
+    expect(val).toBe(false)
+  })
+
+  it('should inherit Liquid options', async function () {
+    const val = await engine.evalValue('foo')
+    expect(val).toBe('FOO')
+  })
+})