CHANGELOG.md

@@ -1,4 +1,28 @@
+#### 0.3.4
+
+ - Update dependencies
+
+#### 0.3.3
+
+ - Add plugin stub to runtime (#73) @joepavitt
+ - Use compatible versions rather than specific version of dependencies (#70) @Pezmc
+
+#### 0.3.2
+
+ - Fix async module loading (#65) @knolleary
+ - Update README.md (#61) @andreasmarkussen
+
+#### 0.3.1
+
+ - Add support for async node modules (#63) @knolleary
+
+#### 0.3.0
+
+ - Require node.js >=14
+ - Add `setFlows` so that node being tested can modify flows (#54) @Steve-Mcl
+
 #### 0.2.7
+
  - Wait for startFlows to resolve before returning from loadFlow call - required with Node-RED 1.3+
  - README.md: Update example unit test to report assertion failures
  - examples: lower-case_spec.js: Allow proper assertion failure reporting (#45)

README.md

@@ -314,7 +314,44 @@ Loads a flow then starts the flow. This function has the following arguments:
 * testNode: (object|array of objects) Module object of a node to be tested returned by require function. This node will be registered, and can be used in testFlows.
 * testFlow: (array of objects) Flow data to test a node. If you want to use flow data exported from Node-RED editor, export the flow to the clipboard and paste the content into your test scripts.
 * testCredentials: (object) Optional node credentials.
-* cb: (function) Function to call back when testFlows has been started.
+* cb: (function) Function to call back when testFlows has been started  (not required when called wih `await`)
+
+### setFlows(testFlow, type, testCredentials, cb)
+
+Updates the currently loaded flow. This function has the following arguments:
+
+* testFlow: (array of objects) Flow data to test a node. If you want to use flow data exported from Node-RED editor, export the flow to the clipboard and paste the content into your test scripts.
+* type: (string) Flow data to test a node. If you want to use flow data exported from Node-RED editor, export the flow to the clipboard and paste the content into your test scripts.
+* testCredentials: (object) Optional node credentials.
+* cb: (function) Function to call back when testFlows has been loaded (not required when called wih `await`)
+
+#### Example
+
+```js
+  it('should modify the flow then lower case of payload', async function () {
+      const flow = [
+            { id: "n2", type: "helper" }
+      ]
+      await helper.load(lowerNode, flow)
+      const newFlow = [...flow]
+      newFlow.push( { id: "n1", type: "lower-case", name: "lower-case", wires:[['n2']] },)
+      await helper.setFlows(newFlow, "nodes") //update flows
+      const n1 = helper.getNode('n1')
+      n1.should.have.a.property('name', 'lower-case')
+      await new Promise((resolve, reject) => {
+        const n2 = helper.getNode('n2')
+        n2.on('input', function (msg) {
+            try {
+                msg.should.have.property('payload', 'hello');
+                resolve()
+            } catch (err) {
+                reject(err);
+            }
+        });
+        n1.receive({ payload: 'HELLO' });
+      });
+  });
+```
 
 ### unload()
 
@@ -384,8 +421,8 @@ Return the URL of the helper server including the ephemeral port used when start
 Return a spy on the logs to look for events from the node under test.  For example:
 
 ```javascript
-var logEvents = helper.log().args.filter(function(evt {
-    return evt[0].type == "batch";
+var logEvents = helper.log().args.filter(function(event) {
+    return event[0].type == "batch";
 });
 ```
 

examples/lower-case_spec.js

@@ -54,4 +54,28 @@ describe('lower-case Node', function () {
       n1.receive({ payload: "UpperCase" });
     });
   });
+  it('should modify the flow then lower case of payload', async function () {
+      const flow = [
+            { id: "n2", type: "helper" }
+      ]
+      await helper.load(lowerNode, flow)
+
+      const newFlow = [...flow]
+      newFlow.push( { id: "n1", type: "lower-case", name: "lower-case", wires:[['n2']] },)
+      await helper.setFlows(newFlow)
+      const n1 = helper.getNode('n1')
+      n1.should.have.a.property('name', 'lower-case')
+      await new Promise((resolve, reject) => {
+        const n2 = helper.getNode('n2')
+        n2.on('input', function (msg) {
+            try {
+                msg.should.have.property('payload', 'hello');
+                resolve()
+            } catch (err) {
+                reject(err);
+            }
+        });
+        n1.receive({ payload: 'HELLO' });
+      });
+  });
 });