test for config parameter

proptest/src/lib.rs

@@ -109,5 +109,4 @@ pub use proptest_macro::property_test;
 fn compile_tests() {
     let t = trybuild::TestCases::new();
     t.pass("tests/pass/*.rs");
-    t.compile_fail("tests/fail/*.rs");
 }

proptest/tests/pass/with_params.rs

@@ -1,9 +1,21 @@
 fn main() {}
 
-#[proptest::property_test(config = proptest::test_runner::Config {
-    cases = 10,
-    ..Default::default()
-})]
-fn my_test(x: i32) {
+#[proptest::property_test(
+    config = proptest::test_runner::Config {
+        cases: 10,
+        ..Default::default()
+    }
+)]
+fn no_trailing_comma(x: i32) {
+    assert_eq!(x, x);
+}
+
+#[proptest::property_test(
+    config = proptest::test_runner::Config {
+        cases: 10,
+        ..Default::default()
+    }
+)]
+fn trailing_comma(x: i32) {
     assert_eq!(x, x);
 }