ansible: fix exec_command() regression.

ansible_mitogen/connection.py

@@ -789,7 +789,7 @@ class Connection(ansible.plugins.connection.ConnectionBase):
             (return code, stdout bytes, stderr bytes)
         """
         emulate_tty = (not in_data and sudoable)
-        rc, stdout, stderr = self.call(
+        rc, stdout, stderr = self.get_chain().call(
             ansible_mitogen.target.exec_command,
             cmd=mitogen.utils.cast(cmd),
             in_data=mitogen.utils.cast(in_data),

tests/ansible/integration/connection/all.yml

@@ -1,4 +1,5 @@
 ---
 
+- import_playbook: exec_command.yml
 - import_playbook: put_small_file.yml
 - import_playbook: put_large_file.yml

tests/ansible/integration/connection/exec_command.yml

@@ -0,0 +1,19 @@
+# Test basic functinality of exec_command.
+---
+
+- name: integration/connection/exec_command.yml
+  hosts: test-targets
+  gather_facts: no
+  any_errors_fatal: true
+  tasks:
+  - connection_passthrough:
+      method: exec_command
+      kwargs:
+        cmd: echo "hello, world"
+    register: out
+
+  - assert:
+      that:
+      - out.result[0] == 0
+      - out.result[1] == "hello, world\r\n"
+      - out.result[2].startswith("Shared connection to ")