Add compile-test (#38)

Cargo.toml

@@ -23,6 +23,9 @@ num-traits = "0.1"
 pyo3cls = { path = "pyo3cls" }
 # backtrace = "0.3"
 
+[dev-dependencies]
+compiletest_rs = "*"
+
 [build-dependencies]
 regex = "0.2"
 

pyo3cls/src/py_class.rs

@@ -25,7 +25,7 @@ pub fn build_py_class(ast: &mut syn::DeriveInput, attr: String) -> Tokens {
                 }
             }
         },
-        _ => panic!("#[class] can only be used with notmal structs"),
+        _ => panic!("#[class] can only be used with normal structs"),
     }
 
     let dummy_const = syn::Ident::new(format!("_IMPL_PYO3_CLS_{}", ast.ident));

tests/compile-fail/class-used-on-enum.rs

@@ -0,0 +1,12 @@
+#![feature(proc_macro)]
+extern crate pyo3;
+
+use pyo3::{py, PyResult, Python, PyModule};
+
+#[py::class]
+//~^ ERROR: custom attribute panicked
+//~^^ HELP: #[class] can only be used with normal structs
+enum MyClass {
+    A,
+    B,
+}

tests/compile-fail/modinit-used-in-non-fn.rs

@@ -0,0 +1,9 @@
+#![feature(proc_macro)]
+extern crate pyo3;
+
+use pyo3::{py, PyResult, Python, PyModule};
+
+#[py::modinit(rust2py)] 
+//~^ ERROR: custom attribute panicked
+//~^^ HELP: #[modinit] can only be used with fn block
+struct Rust2Py;

tests/compile_tests.rs

@@ -0,0 +1,25 @@
+extern crate compiletest_rs as compiletest;
+
+use std::path::PathBuf;
+use std::env::var;
+
+fn run_mode(mode: &'static str) {
+    let mut config = compiletest::default_config();
+    let cfg_mode = mode.parse().ok().expect("Invalid mode");
+
+    config.target_rustcflags = Some("-L target/debug/deps/".to_string());
+    config.mode = cfg_mode;
+    if let Ok(name) = var::<&str>("TESTNAME") {
+        let s : String = name.to_string();
+        config.filter = Some(s)
+    }
+    config.src_base = PathBuf::from(format!("tests/{}", mode));
+
+    compiletest::run_tests(&config);
+}
+
+#[test]
+fn compile_tests() {
+    run_mode("compile-fail");
+    // run_mode("run-pass");
+}