#rewrite implement top-level satisfy()

Author: searls

src/satisfy/execute-plan.js

@@ -0,0 +1,3 @@
+export default function executePlan () {
+}
+

src/satisfy/find-last-stubbing-match.js

@@ -0,0 +1,2 @@
+export default function findLastStubbingMatch () {
+}

src/satisfy/index.js

@@ -1,13 +1,9 @@
-// import _ from '../wrap/lodash'
+import findLastStubbingMatch from './find-last-stubbing-match'
+import executePlan from './execute-plan'
 
 export default function satisfy (double, call) {
-  // TODO: dummy impl to drive create feature first
-
-  // 1. find the last matching stubbing (args+conditions match + has values left)
-  // 2. six-way switch to execute the correct plan switching on the stubbing's `type`
-
-  // see src/store/stubbings.isSatisfied for a full solution (arg matchers + multi-plan, etc)
-  // const stubbing  _.findLast(stubbings, (stubbing) =>
-      // stubbing.isSatisfiedBy(call)
-    // )
+  const stubbing = findLastStubbingMatch(double, call)
+  if (stubbing) {
+    return executePlan(double, call, stubbing)
+  }
 }

test/unit/satisfy/index.test.js

@@ -0,0 +1,34 @@
+import Double from '../../../src/value/double'
+import Call from '../../../src/value/call'
+import Stubbing from '../../../src/value/stubbing'
+
+let findLastStubbingMatch, executePlan, subject
+module.exports = {
+  beforeEach: () => {
+    findLastStubbingMatch = td.replace('../../../src/satisfy/find-last-stubbing-match').default
+    executePlan = td.replace('../../../src/satisfy/execute-plan').default
+
+    subject = require('../../../src/satisfy').default
+  },
+  'finds the last stubbing & returns the executed plan': () => {
+    const double = Double.create()
+    const call = new Call()
+    const stubbing = new Stubbing()
+    td.when(findLastStubbingMatch(double, call)).thenReturn(stubbing)
+    td.when(executePlan(double, call, stubbing)).thenReturn('huzzah')
+
+    const result = subject(double, call)
+
+    assert.equal(result, 'huzzah')
+  },
+  'does nothing if no matching stubbing found': () => {
+    const double = Double.create()
+    const call = new Call()
+    td.when(findLastStubbingMatch(double, call)).thenReturn(undefined)
+
+    const result = subject(double, call)
+
+    assert.equal(result, undefined)
+    assert.equal(td.explain(executePlan).callCount, 0)
+  }
+}