Run tests docs

Author: matt-aitken

docs/images/v3/run-in-progress.png

@@ -3,4 +3,24 @@ title: "Run tests"
 description: "You can use the dashboard to run a test of your tasks."
 ---
 
-<Snippet file="incomplete-docs.mdx" />
+From the "Test" page in the sidebar of the dashboard you can run a test for any of your tasks, that includes for any environment.
+
+<Steps>
+
+<Step title="Select an environment">
+  ![Select an environment](/images/v3/test-select-environment.png)
+</Step>
+
+<Step title="Select the task to test">
+  ![Select the task to test](/images/v3/test-select-task.png)
+</Step>
+
+<Step title="Enter a payload">
+  Select a recent payload as a starting point or enter from scratch. Payloads must be valid JSON – you will see helpful errors if it is not. Press the "Run test" button or use the keyboard shortcut to run the test.
+![Enter a payload](/images/v3/test-set-payload.png)
+
+</Step>
+
+<Step title="View the run live">![View the run live](/images/v3/run-in-progress.png)</Step>
+
+</Steps>