improve test coverage

Author: Jiloc

Cargo.lock

@@ -11,10 +11,20 @@ path = "src/extract_docs.rs"
 name = "generate-markdown"
 path = "src/generate_markdown.rs"
 
+# Add integration test configuration
+[[test]]
+name = "integration"
+path = "tests/integration.rs"
+
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 clap = { version = "4.0", features = ["derive"] }
 regex = "1.0"
 anyhow = "1.0"
 once_cell = "1.18"
+
+# Add test dependencies
+[dev-dependencies]
+tempfile = "3.0"
+assert_cmd = "2.0"