test: add scenario for restoring mode bits

3 files changed, 26 insertions, 0 deletions

diff --git a/obnam.md b/obnam.md
index 7e2bc92..9b98dae 100644
--- a/obnam.md
+++ b/obnam.md
@@ -550,6 +550,25 @@ given a manifest of the directory live restored in rest in rest.yaml
 then files live.yaml and rest.yaml match
 ~~~
 
+### Mode bits
+
+This scenario verifies that the mode ("permission") bits are restored
+correctly.
+
+~~~scenario
+given an installed obnam
+and a running chunk server
+and a client config based on metadata.yaml
+and a file live/data.dat containing some random data
+and file live/data.dat has mode 464
+and a manifest of the directory live in live.yaml
+when I run obnam backup metadata.yaml
+then backup generation is GEN
+when I invoke obnam restore metadata.yaml <GEN> rest
+given a manifest of the directory live restored in rest in rest.yaml
+then files live.yaml and rest.yaml match
+~~~
+
 
 
 
diff --git a/subplot/data.py b/subplot/data.py
index 9eadd3f..09df6c5 100644
--- a/subplot/data.py
+++ b/subplot/data.py
@@ -13,6 +13,10 @@ def create_file_with_random_data(ctx, filename=None):
         f.write(data)
 
 
+def chmod_file(ctx, filename=None, mode=None):
+    os.chmod(filename, int(mode, 8))
+
+
 def create_manifest_of_live(ctx, dirname=None, manifest=None):
     _create_manifest_of_directory(ctx, dirname=dirname, manifest=manifest)
 
diff --git a/subplot/data.yaml b/subplot/data.yaml
index 4f9871a..3b4d938 100644
--- a/subplot/data.yaml
+++ b/subplot/data.yaml
@@ -6,6 +6,9 @@
 - given: "a file {filename} containing some random data"
   function: create_file_with_random_data
 
+- given: file {filename} has mode {mode}
+  function: chmod_file
+
 - given: a manifest of the directory {dirname} in {manifest}
   function: create_manifest_of_live