test: update test to verify container restart on env change

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/case/containers/environment/test.adoc

@@ -5,11 +5,13 @@ ifdef::topdoc[:imagesdir: {topdoc}../../test/case/containers/environment]
 ==== Description
 
 Verify that environment variables can be set in container configuration
-and are available inside the running container.
+and are available inside the running container.  Also verify that
+changing an environment variable triggers a container restart.
 
 1  Set up a container config with multiple environment variables
 2. Serve variables back to host using a CGI script in container
 3. Verify served content against environment variables
+4. Change an environment variable and verify the container restarts
 
 ==== Topology
 
@@ -23,5 +25,7 @@ image::topology.svg[Container environment variables topology, align=center, scal
 . Verify container has started
 . Verify basic connectivity to data interface
 . Verify environment variables in CGI response
+. Change environment variable and verify container restarts
+. Verify container has restarted with updated env
 
 

test/case/containers/environment/test.py

@@ -3,11 +3,13 @@
 Container environment variables
 
 Verify that environment variables can be set in container configuration
-and are available inside the running container.
+and are available inside the running container.  Also verify that
+changing an environment variable triggers a container restart.
 
 1  Set up a container config with multiple environment variables
 2. Serve variables back to host using a CGI script in container
 3. Verify served content against environment variables
+4. Change an environment variable and verify the container restarts
 """
 import infamy
 from infamy.util import until, to_binary, curl
@@ -105,4 +107,24 @@ with infamy.Test() as test:
 
             until(lambda: all(string in ns.call(lambda: curl(URL)) for string in expected_strings))
 
+        with test.step("Change environment variable and verify container restarts"):
+            UPDATED_ENV_VARS = [
+                {"key": "TEST_VAR", "value": "updated-value"},
+                {"key": "APP_PORT", "value": "8080"},
+                {"key": "DEBUG_MODE", "value": "true"},
+                {"key": "PATH_WITH_SPACES", "value": "/path with spaces/test"}
+            ]
+
+            target.put_config_dict("infix-containers", {
+                "containers": {
+                    "container": [{
+                        "name": f"{NAME}",
+                        "env": UPDATED_ENV_VARS,
+                    }]
+                }
+            })
+
+        with test.step("Verify container has restarted with updated env"):
+            until(lambda: "TEST_VAR=updated-value" in ns.call(lambda: curl(URL)), attempts=60)
+
     test.succeed()