Commit workspace transition from test_utils.py to test_forensics.py with new signatures CLI test case

src/ctf/forensics.py

@@ -69,12 +69,12 @@ def inspect(path):
     except Exception:
         magic = ""
         
-    # Task 1: POSIX Permissions
+    # POSIX Permissions
     mode = stat_info.st_mode
     permissions_octal = oct(stat.S_IMODE(mode))
     permissions_symbolic = stat.filemode(mode)
     
-    # Task 2: Ownership Identity
+    # Ownership Identity
     owner_uid = stat_info.st_uid
     owner_gid = stat_info.st_gid
     owner_username = str(owner_uid)
@@ -91,13 +91,13 @@ def inspect(path):
         except KeyError:
             pass
             
-    # Task 3: Allocation Metrics
+    #  Allocation Metrics
     if hasattr(stat_info, "st_blocks"):
         allocated_size = stat_info.st_blocks * 512
     else:
         allocated_size = size
         
-    # Task 4: Hard Links
+    #  Hard Links
     hard_links = stat_info.st_nlink
     
     # Task 5: Inode & Device Identifiers

tests/env/alloc_test.bin

@@ -0,0 +1 @@
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

tests/env/inode_test.bin

@@ -0,0 +1 @@
+data

tests/env/link_test.bin

@@ -0,0 +1 @@
+link

tests/env/owner_test.bin

@@ -0,0 +1 @@
+data

tests/env/perm_test.bin

@@ -0,0 +1 @@
+data

tests/env/xattr_test.bin

@@ -0,0 +1 @@
+data

tests/test_forensics.py

@@ -253,3 +253,15 @@ def test_forensics_inspect_cli_missing_file():
     result = runner.invoke(forensics_group, ["inspect", "non_existent_file.png"])
     assert result.exit_code != 0
     assert "does not exist" in result.output
+
+def test_forensics_signatures_cli():
+    """
+    Verifies that 'forensics signatures' runs successfully and displays
+    the list of supported file signatures.
+    """
+    runner = CliRunner()
+    result = runner.invoke(forensics_group, ["signatures"])
+    assert result.exit_code == 0
+    assert "Supported Magic Signatures" in result.output
+    assert "PNG Image" in result.output
+    assert "89504E47" in result.output