update CSEC tests

Removed the expectation of an empty `Object` class from all tests, since
that behaviour is now deprecated. A blank `Object` class will be
synthesized instead by utility function.

Author: mattcce

src/ec-evaluator/__tests__/__utils__/utils.ts

@@ -1,7 +1,9 @@
 import { Environment } from '../../components'
 import { STEP_LIMIT } from '../../constants'
+import { LFSR } from '../../lib'
 import { ControlItem, Context, StashItem, StructType } from '../../types'
 import { Stack, isNode } from '../../utils'
+import { makeObjectClass } from '../../index'
 
 export class StackStub<T> extends Stack<T> {
   private trace: T[] = []
@@ -17,17 +19,30 @@ export class StackStub<T> extends Stack<T> {
     return this.trace
   }
 }
+
 export class ControlStub extends StackStub<ControlItem> {}
 export class StashStub extends StackStub<StashItem> {}
 // TODO make env traceable
-export class EnvironmentStub extends Environment {}
+export class EnvironmentStub extends Environment {
+  constructor() {
+    super()
+    this.defineClass('Object', makeObjectClass())
+  }
+}
 
 export const createContextStub = (): Context => ({
   errors: [],
   control: new ControlStub(),
   stash: new StashStub(),
   environment: new EnvironmentStub(),
-  totalSteps: STEP_LIMIT
+  totalSteps: STEP_LIMIT,
+  interfaces: {
+    stdout: console.log,
+    stderr: console.error,
+    statics: {
+      lfsr: new LFSR('')
+    }
+  }
 })
 
 export const getControlItemStr = (i: ControlItem): string => {