[PATCH 05/15] iotests: create generic qemu_tool() function

[John Snow <jsnow@redhat.com>]

reimplement qemu_img() in terms of qemu_tool() in preparation for doing
the same with qemu_io().

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/iotests.py | 37 +++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 6cd8374c81..974a2b0c8d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -207,15 +207,13 @@ def qemu_img_create_prepare_args(args: List[str]) -> List[str]:
 
     return result
 
-def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True
+
+def qemu_tool(*args: str, check: bool = True, combine_stdio: bool = True
              ) -> subprocess.CompletedProcess[str]:
     """
-    Run qemu_img and return the status code and console output.
+    Run a qemu tool and return its status code and console output.
 
-    This function always prepends QEMU_IMG_OPTIONS and may further alter
-    the args for 'create' commands.
-
-    :param args: command-line arguments to qemu-img.
+    :param args: command-line arguments to a QEMU cli tool.
     :param check: Enforce a return code of zero.
     :param combine_stdio: set to False to keep stdout/stderr separated.
 
@@ -227,14 +225,13 @@ def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True
         handled, the command-line, return code, and all console output
         will be included at the bottom of the stack trace.
 
-    :return: a CompletedProcess. This object has args, returncode, and
-        stdout properties. If streams are not combined, it will also
-        have a stderr property.
+    :return:
+        A CompletedProcess. This object has args, returncode, and stdout
+        properties. If streams are not combined, it will also have a
+        stderr property.
     """
-    full_args = qemu_img_args + qemu_img_create_prepare_args(list(args))
-
     subp = subprocess.run(
-        full_args,
+        args,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT if combine_stdio else subprocess.PIPE,
         universal_newlines=True,
@@ -243,7 +240,7 @@ def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True
 
     if check and subp.returncode or (subp.returncode < 0):
         raise VerboseProcessError(
-            subp.returncode, full_args,
+            subp.returncode, args,
             output=subp.stdout,
             stderr=subp.stderr,
         )
@@ -251,6 +248,20 @@ def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True
     return subp
 
 
+def qemu_img(*args: str, check: bool = True, combine_stdio: bool = True
+             ) -> subprocess.CompletedProcess[str]:
+    """
+    Run QEMU_IMG_PROG and return its status code and console output.
+
+    This function always prepends QEMU_IMG_OPTIONS and may further alter
+    the args for 'create' commands.
+
+    See `qemu_tool()` for greater detail.
+    """
+    full_args = qemu_img_args + qemu_img_create_prepare_args(list(args))
+    return qemu_tool(*full_args, check=check, combine_stdio=combine_stdio)
+
+
 def ordered_qmp(qmsg, conv_keys=True):
     # Dictionaries are not ordered prior to 3.6, therefore:
     if isinstance(qmsg, list):
-- 
2.34.1