Add juniper_tests crate with integration tests

juniper_tests/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "juniper_tests"
+version = "0.1.0"
+
+[dependencies]
+juniper = { path = "../juniper" }
+juniper_codegen = { path = "../juniper_codegen" }
+
+[[test]]
+name = "integration_tests"
+path = "src/lib.rs"
+harness = true

juniper_tests/src/codegen/mod.rs

@@ -0,0 +1,46 @@
+use std::collections::HashMap;
+
+use juniper::{self, InputValue, ToInputValue, GraphQLType, FromInputValue};
+
+#[derive(GraphQLEnum, Debug, PartialEq)]
+#[graphql(name="Some", description="enum descr")]
+enum SomeEnum {
+  Regular,
+
+  #[graphql(
+    name="FULL",
+    description="field descr",
+    deprecated="depr"
+  )]
+  Full,
+}
+
+#[test]
+fn test_derived_enum() {
+  // Ensure that rename works.
+  assert_eq!(SomeEnum::name(), Some("Some"));
+
+  // Ensure validity of meta info.
+  let mut registry = juniper::Registry::new(HashMap::new());
+  let meta = SomeEnum::meta(&mut registry);
+
+  // Test Regular variant.
+  assert_eq!(
+    SomeEnum::Regular.to(),
+    InputValue::String("Regular".into())
+  );
+  assert_eq!(
+    FromInputValue::from(&InputValue::String("Regular".into())),
+    Some(SomeEnum::Regular)
+  );
+
+  // Test FULL variant.
+  assert_eq!(
+    SomeEnum::Full.to(),
+    InputValue::String("FULL".into())
+  );
+  assert_eq!(
+    FromInputValue::from(&InputValue::String("FULL".into())),
+    Some(SomeEnum::Full)
+  );
+}

juniper_tests/src/lib.rs

@@ -0,0 +1,4 @@
+#[macro_use] extern crate juniper;
+#[macro_use] extern crate juniper_codegen;
+
+mod codegen;