virt.spice: Add a full screen test

Adding a test to verify a remote-viewer connection
with the full screen option the guest takes the
resolution of the client, and it also supports the
negative test if connected w/o the full screen
option the resolution of the guest will not take
on the resolution of the client.
Signed-off-by: NVimal Patel <vipatel@redhat.com>

tests/rv_fullscreen.py

+"""
+rv_fullscreen.py - remote-viewer full screen
+                   Testing the remote-viewer --full-screen option
+                   If successfull, the resolution of the guest will
+                   take the resolution of the client.
+
+Requires: connected binaries remote-viewer, Xorg, gnome session
+
+"""
+import logging
+from autotest.client.shared import error
+from virttest.aexpect import ShellCmdError
+
+
+def run_rv_fullscreen(test, params, env):
+    """
+    Tests the --full-screen option
+    Positive test: full_screen param = yes, verify guest res = client res
+    Negative test: full_screen param= no, verify guest res != client res
+
+    @param test: KVM test object.
+    @param params: Dictionary with the test parameters.
+    @param env: Dictionary with test environment.
+    """
+    # Get the parameters needed for the test
+    full_screen = params.get("full_screen")
+    guest_vm = env.get_vm(params["guest_vm"])
+    client_vm = env.get_vm(params["client_vm"])
+
+    guest_vm.verify_alive()
+    guest_session = guest_vm.wait_for_login(
+            timeout=int(params.get("login_timeout", 360)))
+
+    client_vm.verify_alive()
+    client_session = client_vm.wait_for_login(
+            timeout=int(params.get("login_timeout", 360)))
+
+    # Get the resolution of the client & guest
+    logging.info("Getting the Resolution on the client")
+    client_session.cmd("export DISPLAY=:0.0")
+
+    try:
+        client_res_raw = client_session.cmd("xrandr | grep '*'")
+        client_res = client_res_raw.split()[0]
+    except ShellCmdError:
+        raise error.TestFail("Could not get guest resolution, xrandr output:" +
+                             " %s" % client_res_raw)
+    except IndexError:
+        raise error.TestFail("Could not get guest resolution, xrandr output:" +
+                             " %s" % client_res_raw)
+
+    logging.info("Getting the Resolution on the guest")
+    guest_session.cmd("export DISPLAY=:0.0")
+
+    try:
+        guest_res_raw = guest_session.cmd("xrandr | grep '*'")
+        guest_res = guest_res_raw.split()[0]
+    except ShellCmdError:
+        raise error.TestFail("Could not get guest resolution, xrandr output:" +
+                             " %s" % guest_res_raw)
+    except IndexError:
+        raise error.TestFail("Could not get guest resolution, xrandr output:" +
+                             " %s" % guest_res_raw)
+
+    logging.info("Here's the information I have: ")
+    logging.info("\nClient Resolution: " + client_res)
+    logging.info("\nGuest Resolution: " + guest_res)
+
+    # Positive Test, verify the guest takes the resolution of the client
+    if full_screen == "yes":
+        if(client_res == guest_res):
+            logging.info("PASS: Guest resolution is the same as the client")
+        else:
+            raise error.TestFail("Guest resolution is the same as the client")
+    # Negative Test, verify the resolutions are not equal
+    elif full_screen == "no":
+        if(client_res != guest_res):
+            logging.info("PASS: Guest resolution differs from the client")
+        else:
+            raise error.TestFail("Guest resolution differs from the client")
+    else:
+        raise error.TestFail("The test setup is incorrect.")
+
+    client_session.close()
+    guest_session.close()