feature/legacy support (#93)

feature toggle for backtrace

.travis.yml

@@ -4,6 +4,9 @@ rust:
   - beta
   - nightly
 cache: cargo
+before_cache:
+  - cargo clean -p serde-xml-rs
+  - rm -f target/debug/deps/libserde_xml_rs*.rlib
 env:
   global:
     - RUST_BACKTRACE=1

Cargo.toml

@@ -10,9 +10,14 @@ version = "0.3.0"
 log = "0.4"
 serde = "1.0"
 xml-rs = "0.8.0"
-error-chain = "0.10.0"
+error-chain = { version = "0.10.0", default-features = false }
 
 [dev-dependencies]
 serde_derive = "1.0"
 simple_logger = "1.0.1"
 docmatic = "0.1.2"
+
+[features]
+default = ["with-backtrace"]
+with-backtrace = ["error-chain/default"]
+legacy-support = ["error-chain/example_generated"]

tests/failures.rs

@@ -0,0 +1,52 @@
+#[macro_use]
+extern crate serde_derive;
+extern crate serde_xml_rs;
+
+#[macro_use]
+extern crate log;
+extern crate simple_logger;
+
+use serde_xml_rs::from_str;
+
+#[derive(Debug, Deserialize, PartialEq)]
+struct Item {
+    name: String,
+    source: String,
+}
+
+#[test]
+fn simple_struct_from_attributes_should_fail() {
+    let _ = simple_logger::init();
+
+    let s = r##"
+        <item name="hello" source="world.rs />
+    "##;
+
+    let item: Result<Item, _> = from_str(s);
+    match item {
+        Ok(_) => assert!(false),
+        Err(e) => {
+            info!("simple_struct_from_attributes_should_fail(): {}", e);
+            assert!(true)
+        }
+    }
+}
+
+#[test]
+fn multiple_roots_attributes_should_fail() {
+    let _ = simple_logger::init();
+
+    let s = r##"
+        <item name="hello" source="world.rs" />
+        <item name="hello source="world.rs" />
+    "##;
+
+    let item: Result<Vec<Item>, _> = from_str(s);
+    match item {
+        Ok(_) => assert!(false),
+        Err(e) => {
+            info!("multiple_roots_attributes_should_fail(): {}", e);
+            assert!(true)
+        }
+    }
+}