Add test cases verifying pure EXIF parsing and inspect -i/-e options

tests/test_forensics.py

@@ -302,4 +302,61 @@ def test_forensics_signatures_cli():
 
 # (Old flag-detect tests removed)
 
+def test_pure_exif_parsing():
+    """
+    Verifies that get_metadata successfully parses EXIF fields from a mock PNG.
+    """
+    import struct
+    tiff_data = (
+        b"II\x2a\x00\x08\x00\x00\x00"  # TIFF Header
+        b"\x02\x00"                    # Num entries
+        b"\x0f\x01\x02\x00\x05\x00\x00\x00\x26\x00\x00\x00"  # Entry 1 (Make: offset 38)
+        b"\x10\x01\x02\x00\x06\x00\x00\x00\x2b\x00\x00\x00"  # Entry 2 (Model: offset 43)
+        b"\x00\x00\x00\x00"            # Next IFD offset
+        b"TEST\x00"                    # Make value
+        b"MODEL\x00"                   # Model value
+    )
+    png_header = b"\x89PNG\r\n\x1a\n"
+    exif_chunk_type = b"eXIf"
+    exif_chunk_len = struct.pack(">I", len(tiff_data))
+    exif_chunk_crc = b"\x00\x00\x00\x00"
+    
+    mock_png = png_header + exif_chunk_len + exif_chunk_type + tiff_data + exif_chunk_crc
+    
+    test_file = TEST_ENV / "mock_exif_image.png"
+    with open(test_file, "wb") as f:
+        f.write(mock_png)
+        
+    meta = get_metadata(test_file)
+    assert meta.exif_data.get("Make") == "TEST"
+    assert meta.exif_data.get("Model") == "MODEL"
+
+def test_exif_cli_options():
+    """
+    Verifies CLI options -i/--inode and -e/--exif work as expected.
+    """
+    from ctf.main import cli
+    runner = CliRunner()
+    test_file = TEST_ENV / "mock_exif_image.png"
+    
+    # Verify mutual exclusion error
+    result_err = runner.invoke(cli, ["inspect", "-i", "-e", str(test_file)])
+    assert result_err.exit_code != 0
+    assert "Cannot specify both" in result_err.output
+    
+    # Verify --inode hides EXIF data table
+    result_inode = runner.invoke(cli, ["inspect", "-i", str(test_file)])
+    assert result_inode.exit_code == 0
+    assert "Metadata: mock_exif_image.png" in result_inode.output
+    assert "EXIF Metadata" not in result_inode.output
+    
+    # Verify --exif hides POSIX table but displays EXIF data table
+    result_exif = runner.invoke(cli, ["inspect", "-e", str(test_file)])
+    assert result_exif.exit_code == 0
+    assert "Metadata: mock_exif_image.png" not in result_exif.output
+    assert "EXIF Metadata: mock_exif_image.png" in result_exif.output
+    assert "Make" in result_exif.output
+    assert "TEST" in result_exif.output
+
+