1 files changed, 21 insertions, 0 deletions
diff --git a/subplot/summain.py b/subplot/summain.py
index 4efc8c4..e137ade 100644
--- a/subplot/summain.py
+++ b/subplot/summain.py
@@ -1,5 +1,7 @@
+import difflib
 import logging
 import os
+import socket
 
 
 def install_summain(ctx):
@@ -21,6 +23,15 @@ def create_symlink(ctx, linkname=None, target=None):
     os.symlink(target, linkname)
 
 
+def create_socket(ctx, filename=None):
+    fd = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+    fd.bind(filename)
+
+
+def set_mode(ctx, filename=None, mode=None):
+    os.chmod(filename, int(mode, 8))
+
+
 def set_atime(ctx, filename=None, timestamp=None):
     st = os.lstat(filename)
     os.utime(filename, (int(timestamp), int(st.st_mtime)), follow_symlinks=False)
@@ -38,7 +49,17 @@ def output_matches_file(ctx, filename=None):
 
     actual = runcmd_get_stdout(ctx)
     expected = get_file(filename).decode("UTF-8")
+    diff = "".join(
+        line.rstrip("\n") + "\n"
+        for line in difflib.unified_diff(
+            expected.splitlines(),
+            actual.splitlines(),
+            fromfile="expected",
+            tofile="actual",
+        )
+    )
     logging.debug("output_matches:")
     logging.debug(f"  actual:\n{actual}")
     logging.debug(f"  expect:\n{expected}")
+    logging.debug(f"  diff:\n{diff}")
     assert_eq(actual, expected)