fix: Fix file workflow test for container environments

* Card ID: CCT-994

The test for updating info in the archive was failing in containers,
which are not in charge of their own hostnames. This commit resolves the
test failures by simulating hostname updates through archive file
modification.

Author: pkoprda

integration-tests/test_file_workflow.py

@@ -12,7 +12,6 @@
 import string
 import subprocess
 import tarfile
-from time import sleep
 import pytest
 from constants import HOST_DETAILS
 from constants import MACHINE_ID_FILE
@@ -121,12 +120,10 @@ def test_file_workflow_with_an_archive_without_canonical_facts(
     assert "Successfully uploaded report" in upload_result.stdout
 
 
-@pytest.mark.skipif(
-    "container" in os.environ.keys(),
-    reason="Containers cannot change hostnames",
-)
 @pytest.mark.tier1
-def test_file_workflow_archive_update_host_info(insights_client, external_inventory):
+def test_file_workflow_archive_update_host_info(
+    insights_client, external_inventory, tmp_path
+):
     """
     :id: 336abff9-4263-4f1d-9448-2cd05d40a371
     :title: Verify Insights Archive Updates Host Information
@@ -135,35 +132,76 @@ def test_file_workflow_archive_update_host_info(insights_client, external_invent
         the correct host information, such as hostname, in the Inventory
     :tags: Tier 1
     :steps:
-        1. Register the system with insights-client and confirm data upload
-        2. Change the system hostname
-        3. Collect and upload the new archive
-        4. Retrieve host data from Inventory and verify fqdn
+        1. Register the system with insights-client
+        2. In a non-container environment, change the system hostname and collect
+            a new archive. In a container environment create a modified archive
+            with new hostname files
+        3. Upload the new archive
+        4. Retrieve host data from Inventory and verify FQDN
     :expectedresults:
-        1. The system is registered and the archive is uploaded successfully
+        1. The system is registered successfully
         2. The system hostname is updated successfully
         3. A new archive is collected and uploaded successfully
-        4. The fqdn in the Inventory matches the updated hostname
+        4. The FQDN in the Inventory matches the updated hostname
     """
     insights_client.register()
     assert conftest.loop_until(lambda: insights_client.is_registered)
-    current_hostname = subprocess.check_output("hostname", shell=True).decode().strip()
 
-    # Set a new hostname
-    new_hostname = set_hostname()
-    fqdn = subprocess.check_output("hostname -f", shell=True).decode().strip()
-    logging.debug(f"Assigned hostname: {new_hostname}, FQDN: {fqdn}")
+    if "container" not in os.environ.keys():
+        current_hostname = (
+            subprocess.check_output("hostname", shell=True).decode().strip()
+        )
+
+        # Set a new hostname
+        new_hostname = set_hostname()
+        fqdn = subprocess.check_output("hostname -f", shell=True).decode().strip()
+        logging.debug(f"Assigned hostname: {new_hostname}, FQDN: {fqdn}")
+        cmd_options = []
+
+    else:
+        # In a container environment, we cannot change the hostname
+        # So we will just simulate the upload of an archive with a different hostname
+        fqdn = new_hostname = generate_random_hostname()
+        logging.debug(f"Assigned hostname: {new_hostname}")
+        original_archive = tmp_path / "archive.tar.gz"
+        modified_archive = tmp_path / "archive_modified.tar.gz"
+
+        insights_client.run(f"--output-file={original_archive}")
+        hostname_file = tmp_path / "hostname"
+        hostname_f_file = tmp_path / "hostname_-f"
+        with open(hostname_file, "w") as hf:
+            hf.write(new_hostname + "\n")
+        with open(hostname_f_file, "w") as hff:
+            hff.write(new_hostname + "\n")
+
+        # Create a modified archive with new hostname files
+        modify_archive(
+            original_archive,
+            modified_archive,
+            files_to_remove=[
+                "/data/insights_commands/hostname",
+                "/data/insights_commands/hostname_-f",
+            ],
+            files_to_add=[
+                (hostname_file, "/data/insights_commands/hostname"),
+                (hostname_f_file, "/data/insights_commands/hostname_-f"),
+            ],
+        )
+
+        os.remove(hostname_file)
+        os.remove(hostname_f_file)
+        cmd_options = ["--payload", modified_archive, "--content-type", "gz"]
 
-    insights_client.run()
-    sleep(30)  # Wait for data to get reflected in inventory
+    insights_client.run(*cmd_options)
     host_data = external_inventory.this_system()
     logging.debug(f"Host data from inventory: {host_data}")
 
-    # New hostname matches the one in Inventory
+    # The new hostname matches the one in Inventory
     assert host_data.get("fqdn") == fqdn
 
     # Reset to the original hostname
-    set_hostname(current_hostname)
+    if "container" not in os.environ.keys():
+        set_hostname(current_hostname)
 
 
 def modify_archive(
@@ -190,10 +228,14 @@ def modify_archive(
 
 def set_hostname(hostname=None):
     if hostname is None:
-        hostname = (
-            "".join(random.choices(string.ascii_lowercase + string.digits, k=10))
-            + "-new-hostname.example.com"
-        )
+        hostname = generate_random_hostname()
 
     subprocess.run(["hostnamectl", "set-hostname", hostname], check=True)
     return hostname
+
+
+def generate_random_hostname():
+    return (
+        "".join(random.choices(string.ascii_lowercase + string.digits, k=10))
+        + "-container-host.example.com"
+    )