copy README tests into tests/readme.rs

cargo test doesn't currently pick up doctests in README.md, tracking
issue: rust-lang/cargo#383

Author: rahulg

src/lib.rs

@@ -272,7 +272,8 @@ impl Element {
             match T::from_str(text) {
                 Err(_) => Err(errors::Error::ValueFromStr {
                     t: text.to_string(),
-                }.into()),
+                }
+                .into()),
                 Ok(value) => Ok(Some(value)),
             }
         } else {

tests/readme.rs

@@ -0,0 +1,39 @@
+extern crate treexml;
+
+mod readme {
+
+    use treexml::{Document, ElementBuilder as E};
+    #[test]
+    fn read() {
+        let doc_raw = r#"
+    <?xml version="1.1" encoding="UTF-8"?>
+    <table>
+        <fruit type="apple">worm</fruit>
+        <vegetable />
+    </table>
+    "#;
+
+        let doc = Document::parse(doc_raw.as_bytes()).unwrap();
+        let root = doc.root.unwrap();
+
+        let fruit = root.find_child(|tag| tag.name == "fruit").unwrap().clone();
+        println!("{} [{:?}] = {:?}", fruit.name, fruit.attributes, fruit.text,);
+    }
+
+    #[test]
+    fn write() {
+        let mut something = E::new("something");
+        something.attr("key", "value");
+        something.text("some-text");
+
+        let doc = Document::build(E::new("root").children(vec![E::new("list").children(vec![
+            E::new("child").cdata("test data here"),
+            E::new("child").attr("class", "foo").text("bar"),
+            E::new("child").attr("class", 22).text(11),
+            &mut E::new("child"),
+            &mut something,
+        ])]));
+
+        println!("{}", doc);
+    }
+}

tests/write.rs

@@ -163,14 +163,13 @@ mod write {
         fn incremental_build() {
             let preexisting: Element = E::new("preexisting").element();
 
-            let doc = Document::build(E::new("root").children(vec![
-                E::new("list").children(vec![
+            let doc =
+                Document::build(E::new("root").children(vec![E::new("list").children(vec![
                     &mut preexisting.into(),
                     &mut E::new("child"),
                     E::new("child").attr("class", "foo").text("bar"),
                     E::new("child").attr("class", 22).text(11),
-                ]),
-            ]));
+                ])]));
 
             let doc_ref = concat!(
                 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n",