Fix some bugs with pipe on Windows

Author: Anisimov-ds

Diff for: testgres/node.py

@@ -865,8 +865,7 @@ def psql(self,
             "-X",  # no .psqlrc
             "-A",  # unaligned output
             "-t",  # print rows only
-            "-q",  # run quietly
-            dbname
+            "-q"  # run quietly
         ]  # yapf: disable
 
         # set variables before execution
@@ -881,6 +880,9 @@ def psql(self,
         else:
             raise QueryException('Query or filename must be provided')
 
+        # should be the last one
+        psql_params.append(dbname)
+
         # start psql process
         process = subprocess.Popen(
             psql_params,

Diff for: testgres/utils.py

@@ -8,6 +8,7 @@
 import port_for
 import subprocess
 import sys
+import tempfile
 
 from contextlib import contextmanager
 from distutils.version import LooseVersion
@@ -59,13 +60,32 @@ def execute_utility(args, logfile=None):
     """
 
     # run utility
-    process = subprocess.Popen(
-        args,    # util + params
-        stdout=subprocess.PIPE,
-        stderr=subprocess.STDOUT)
-
-    # get result and decode it
-    out, _ = process.communicate()
+    if os.name == 'nt':
+        # using output to a temporary file in Windows
+        buf = tempfile.NamedTemporaryFile()
+
+        process = subprocess.Popen(
+            args,    # util + params
+            stdout=buf,
+            stderr=subprocess.STDOUT
+            )
+        process.communicate()
+
+        # get result
+        buf.file.flush()
+        buf.file.seek(0)
+        out = buf.file.read()
+        buf.close()
+    else:
+        process = subprocess.Popen(
+            args,    # util + params
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT)
+
+        # get result
+        out, _ = process.communicate()
+
+    # decode result
     out = '' if not out else out.decode('utf-8')
 
     # format command