Add assertions to tests (#8)

Refine with checking the output of commands

Author: PiotrKorkus

qnx_qemu/test/itf/test_ssh.py

@@ -10,14 +10,37 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 # *******************************************************************************
-from itf.plugins.com.ssh import execute_command
+from itf.plugins.com.ping import ping
+from itf.plugins.com.ssh import execute_command_output
 
 
 def test_ssh_with_default_user(target_fixture):
     with target_fixture.sut.ssh() as ssh:
-        execute_command(ssh, "echo 'Username:' $USER && uname -a")
+        exit_code, stdout, stderr = execute_command_output(
+            ssh, "echo 'Username:' $USER && uname -a"
+        )
+        assert exit_code == 0, "SSH command failed"
+        assert "Username: root" in stdout[0], "Expected username not found in output"
+        assert "QNX Qnx_S-core 8.0.0" in stdout[1], (
+            "Expected QNX kernel information not found in output"
+        )
+        assert stderr == [], "Expected no error output"
 
 
 def test_ssh_with_qnx_user(target_fixture):
-    with target_fixture.sut.ssh(username="qnxuser") as ssh:
-        execute_command(ssh, "echo 'Username:' $USER && uname -a")
+    user = "qnxuser"
+    with target_fixture.sut.ssh(username=user) as ssh:
+        exit_code, stdout, stderr = execute_command_output(
+            ssh, "echo 'Username:' $USER && uname -a"
+        )
+        assert exit_code == 0, "SSH command failed"
+        assert f"Username: {user}" in stdout[0], "Expected username not found in output"
+        assert "QNX Qnx_S-core 8.0.0" in stdout[1], (
+            "Expected QNX kernel information not found in output"
+        )
+        assert stderr == [], "Expected no error output"
+
+
+def test_ping_ok(target_fixture):
+    is_reachable = ping(target_fixture.sut.ip_address)
+    assert is_reachable, "QNX Target is not reachable via ping"