[RHELC-788] Implement integration test error after ponr

plans/tier1.fmf

@@ -300,3 +300,16 @@ adjust+:
         discover+:
             test+<:
                 - proxy-conversion/proxy_conversion
+
+    /error-after-ponr:
+        enabled: false
+        adjust+:
+          - enabled: true
+            when: distro == alma-9, rocky-9, oracle-9
+            because: It will behave the same anywhere. Too expensive to run it on more hosts.
+        discover+:
+            # Disregarding inheritance in the test discovery.
+            # As the conversion fails and the system is left in an undetermined state,
+            # we can't perform any checks after the conversion.
+            test:
+                - error-after-ponr

tests/integration/tier0/destructive/conversion-method/test_config_file.py

@@ -32,8 +32,8 @@ def test_conversion_with_config_file(convert2rhel):
     create_files(config)
 
     with convert2rhel("-y --serverurl {} --debug".format(TEST_VARS["RHSM_SERVER_URL"])) as c2r:
-        c2r.expect("DEBUG - Found activation_key in /root/.convert2rhel.ini")
-        c2r.expect("DEBUG - Found org in /root/.convert2rhel.ini")
+        c2r.expect("DEBUG - Found activation_key in subscription_manager")
+        c2r.expect("DEBUG - Found org in subscription_manager")
         c2r.expect("Conversion successful!")
 
     assert c2r.exitstatus == 0

tests/integration/tier1/destructive/error-after-ponr/main.fmf

@@ -0,0 +1,9 @@
+summary: |
+    Trigger a error after PONR
+description: |
+    Verify that convert2rhel exits with 2 after a error in PONR
+    Verify that the error is logged with a message to the user
+    This test will break the machine, there is no reboot or checks after this test
+
+/error_after_ponr:
+    test: pytest -m test_error_after_ponr

tests/integration/tier1/destructive/error-after-ponr/test_error_after_ponr.py

@@ -0,0 +1,40 @@
+from conftest import TEST_VARS
+
+
+def test_error_after_ponr(convert2rhel, shell):
+    """
+    Verify the improved explanatory log message is displayed to the user when a fail occurs
+    after the point of no return. Also verify that the exit code is 2.
+
+    This test destroys the machine so neither reboot nor any checks after conversion are called
+    """
+    assert shell("yum install dnsmasq -y").returncode == 0
+    with convert2rhel(
+        "-y --serverurl {} --username {} --password {} --debug".format(
+            TEST_VARS["RHSM_SERVER_URL"],
+            TEST_VARS["RHSM_SCA_USERNAME"],
+            TEST_VARS["RHSM_SCA_PASSWORD"],
+        )
+    ) as c2r:
+        # Wait until Point of no return appears. Then block all the internet connection
+        c2r.expect_exact("WARNING - The tool allows rollback of any action until this point.")
+        c2r.expect_exact("Convert: Replace system packages")
+
+        # Everything is resolved to localhost
+        with open("/etc/dnsmasq.conf", "a") as f:
+            f.write("address=/#/127.0.0.1")
+
+        with open("/etc/resolv.conf", "w") as f:
+            f.write("nameserver 127.0.0.1")
+
+        assert shell("systemctl enable dnsmasq && systemctl restart dnsmasq").returncode == 0
+
+        c2r.expect("WARNING - The conversion process failed")
+        c2r.expect(
+            "The system is left in an undetermined state that Convert2RHEL cannot fix. The system might not be fully converted, and might incorrectly be reporting as a Red Hat Enterprise Linux machine"
+        )
+        c2r.expect(
+            "It is strongly recommended to store the Convert2RHEL logs for later investigation, and restore the system from a backup"
+        )
+
+    assert c2r.exitstatus == 2