Version 1

[yaffs-website] / node_modules / kew / test / context.js

diff --git a/node_modules/kew/test/context.js b/node_modules/kew/test/context.js
new file mode 100644 (file)
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+++ b/node_modules/kew/test/context.js
@@ -0,0 +1,89 @@
+var Q = require('../kew')
+
+// test that contexts are propogated based on position
+exports.testContextWithDelay = function (test) {
+
+       Q.resolve(true)
+         .setContext({id: 1})
+         .then(function (val, context) {
+               test.equal(context.id, 1, 'Should return the first context')
+               return Q.delay(500)
+         })
+         .setContext({id: 2})
+         .then(function (val, context) {
+               test.equal(context.id, 2, 'Should return the second context')
+               return Q.delay(500)
+         })
+         .clearContext()
+         .then(function (val, context) {
+               test.equal(typeof context, 'undefined', 'Should return an undefined context')
+               return Q.delay(500)
+         })
+         .setContext({id: 3})
+         .fin(test.done)
+}
+
+// test adding and removing contexts
+exports.testGeneralContextFlow = function (test) {
+       Q.resolve(true)
+               // test no context exists
+         .then(function (val, context) {
+               test.equal(typeof context, 'undefined', 'Context should be undefined')
+               throw new Error()
+         })
+         .fail(function (e, context) {
+               test.equal(typeof context, 'undefined', 'Context should be undefined')
+         })
+
+         // set the context and mutate it
+         .setContext({counter: 1})
+         .then(function (val, context) {
+               test.equal(context.counter, 1, 'Counter should be 1')
+               context.counter++
+         })
+         .then(function (val, context) {
+               test.equal(context.counter, 2, 'Counter should be 2')
+               context.counter++
+               throw new Error()
+         })
+         .fail(function (e, context) {
+               test.equal(context.counter, 3, 'Counter should be 3')
+         })
+
+         // return a context
+         .then(function (val, context) {
+               return Q.resolve(false)
+                 .setContext({counter: 0})
+         })
+         .then(function (val, context) {
+               test.equal(context.counter, 0, 'Counter should be 0')
+               throw new Error()
+         })
+         .fail(function (e, context) {
+               test.equal(context.counter, 0, 'Counter should be 0')
+         })
+
+         // returning a promise with a cleared context won't clear the parent context
+         .then(function (val, context) {
+               return Q.resolve(false).clearContext()
+         })
+         .then(function (val, context) {
+               test.equal(context.counter, 0, 'Counter should be 0')
+               throw new Error()
+         })
+         .fail(function (e, context) {
+               test.equal(context.counter, 0, 'Counter should be 0')
+         })
+
+         // test that clearing the context works
+         .clearContext()
+         .then(function (val, context) {
+               test.equal(typeof context, 'undefined', 'Context should be undefined')
+               throw new Error()
+         })
+         .fail(function (e, context) {
+               test.equal(typeof context, 'undefined', 'Context should be undefined')
+         })
+
+         .fin(test.done)
+}
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