pio-test: add page (#5815)

pages/common/pio-test.md

@@ -0,0 +1,28 @@
+# pio test
+
+> Run local tests on a PlatformIO project.
+> More information: <https://docs.platformio.org/en/latest/core/userguide/cmd_test.html>.
+
+- Run all tests in all environments of the current PlatformIO project:
+
+`pio test`
+
+- Test only specific environments:
+
+`pio test --environment {{environment1}} --environment {{environment2}}`
+
+- Run only tests whose name matches a specific glob pattern:
+
+`pio test --filter "{{pattern}}"`
+
+- Ignore tests whose name matches a specific glob pattern:
+
+`pio test --ignore "{{pattern}}"`
+
+- Specify a port for firmware uploading:
+
+`pio test --upload-port {{upload_port}}`
+
+- Specify a custom configuration file for running the tests:
+
+`pio test --project-conf {{path/to/platformio.ini}}`