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[PATCH v3 4/5] qemu-iotests: Merge FilePaths and FilePath


From: Nir Soffer
Subject: [PATCH v3 4/5] qemu-iotests: Merge FilePaths and FilePath
Date: Sat, 29 Aug 2020 02:21:51 +0300

FilePath creates now one temporary file:

    with FilePath("a") as a:

Or more:

    with FilePath("a", "b", "c") as (a, b, c):

This is also the behavior of the file_path() helper, used by some of the
tests. Now we have only 2 helpers for creating temporary files instead
of 3.

Signed-off-by: Nir Soffer <nsoffer@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/194        |  2 +-
 tests/qemu-iotests/208        |  2 +-
 tests/qemu-iotests/222        |  2 +-
 tests/qemu-iotests/257        |  4 ++--
 tests/qemu-iotests/iotests.py | 23 ++++++++++-------------
 5 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/tests/qemu-iotests/194 b/tests/qemu-iotests/194
index 08389f474e..7a4863ab18 100755
--- a/tests/qemu-iotests/194
+++ b/tests/qemu-iotests/194
@@ -26,7 +26,7 @@ iotests.script_initialize(supported_fmts=['qcow2', 'qed', 
'raw'],
 
 with iotests.FilePath('source.img') as source_img_path, \
      iotests.FilePath('dest.img') as dest_img_path, \
-     iotests.FilePaths('migration.sock', 'nbd.sock', 
base_dir=iotests.sock_dir) \
+     iotests.FilePath('migration.sock', 'nbd.sock', base_dir=iotests.sock_dir) 
\
         as (migration_sock_path, nbd_sock_path), \
      iotests.VM('source') as source_vm, \
      iotests.VM('dest') as dest_vm:
diff --git a/tests/qemu-iotests/208 b/tests/qemu-iotests/208
index 6cb642f821..54aa4be273 100755
--- a/tests/qemu-iotests/208
+++ b/tests/qemu-iotests/208
@@ -26,7 +26,7 @@ iotests.script_initialize(supported_fmts=['generic'])
 
 with iotests.FilePath('disk.img') as disk_img_path, \
      iotests.FilePath('disk-snapshot.img') as disk_snapshot_img_path, \
-     iotests.FilePath('nbd.sock', iotests.sock_dir) as nbd_sock_path, \
+     iotests.FilePath('nbd.sock', base_dir=iotests.sock_dir) as nbd_sock_path, 
\
      iotests.VM() as vm:
 
     img_size = '10M'
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222
index 6602f6b4ba..14d67c875b 100755
--- a/tests/qemu-iotests/222
+++ b/tests/qemu-iotests/222
@@ -49,7 +49,7 @@ remainder = [("0xd5", "0x108000",  "32k"), # Right-end of 
partial-left [1]
 
 with iotests.FilePath('base.img') as base_img_path, \
      iotests.FilePath('fleece.img') as fleece_img_path, \
-     iotests.FilePath('nbd.sock', iotests.sock_dir) as nbd_sock_path, \
+     iotests.FilePath('nbd.sock', base_dir=iotests.sock_dir) as nbd_sock_path, 
\
      iotests.VM() as vm:
 
     log('--- Setting up images ---')
diff --git a/tests/qemu-iotests/257 b/tests/qemu-iotests/257
index a9aa65bbe3..c80e06ae28 100755
--- a/tests/qemu-iotests/257
+++ b/tests/qemu-iotests/257
@@ -275,7 +275,7 @@ def test_bitmap_sync(bsync_mode, msync_mode='bitmap', 
failure=None):
                         an incomplete backup. Testing limitations prevent
                         testing competing writes.
     """
-    with iotests.FilePaths(
+    with iotests.FilePath(
             'img', 'bsync1', 'bsync2', 'fbackup0', 'fbackup1', 'fbackup2') as \
             (img_path, bsync1, bsync2, fbackup0, fbackup1, fbackup2), \
          iotests.VM() as vm:
@@ -440,7 +440,7 @@ def test_backup_api():
     """
     Test malformed and prohibited invocations of the backup API.
     """
-    with iotests.FilePaths('img', 'bsync1') as (img_path, backup_path), \
+    with iotests.FilePath('img', 'bsync1') as (img_path, backup_path), \
          iotests.VM() as vm:
 
         log("\n=== API failure tests ===\n")
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 0d22ad5b03..7a233330c9 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -448,14 +448,14 @@ class Timeout:
 def file_pattern(name):
     return "{0}-{1}".format(os.getpid(), name)
 
-class FilePaths:
+class FilePath:
     """
     Context manager generating multiple file names. The generated files are
     removed when exiting the context.
 
     Example usage:
 
-        with FilePaths('a.img', 'b.img') as (img_a, img_b):
+        with FilePath('a.img', 'b.img') as (img_a, img_b):
             # Use img_a and img_b here...
 
         # a.img and b.img are automatically removed here.
@@ -463,7 +463,10 @@ class FilePaths:
     By default images are created in iotests.test_dir. To create socket use
     iotests.sock_dir:
 
-       with FilePaths('a.sock', base_dir=iotests.sock_dir) as (sock,):
+       with FilePath('a.sock', base_dir=iotests.sock_dir) as sock:
+
+    For convenience, calling with one argument yields a single file instead of
+    a tuple with one item.
 
     """
     def __init__(self, *names, base_dir=test_dir):
@@ -472,7 +475,10 @@ class FilePaths:
             self.paths.append(os.path.join(base_dir, file_pattern(name)))
 
     def __enter__(self):
-        return self.paths
+        if len(self.paths) == 1:
+            return self.paths[0]
+        else:
+            return self.paths
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         for path in self.paths:
@@ -482,15 +488,6 @@ class FilePaths:
                 pass
         return False
 
-class FilePath(FilePaths):
-    """
-    FilePath is a specialization of FilePaths that takes a single filename.
-    """
-    def __init__(self, name, base_dir=test_dir):
-        super(FilePath, self).__init__(name, base_dir=base_dir)
-
-    def __enter__(self):
-        return self.paths[0]
 
 def file_path_remover():
     for path in reversed(file_path_remover.paths):
-- 
2.26.2




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