Spanned: impl PartialEq, Eq, Hash, PartialOrd, Ord in terms of the value (#344)

* Spanned: impl PartialEq, Eq, Hash, PartialOrd, Ord in terms of the value

This is because we want to be able to index into HashMap<Spanned<String>, T>
with a dummy span and get results where only the content has to match.

* Add Borrow impl

* Add tests

1 files changed, 41 insertions, 0 deletions

diff --git a/test-suite/tests/spanned-impls.rs b/test-suite/tests/spanned-impls.rs
new file mode 100644
index 0000000..cb12b1a
--- /dev/null
+++ b/test-suite/tests/spanned-impls.rs
@@ -0,0 +1,41 @@
+use std::cmp::{Ord, Ordering, PartialOrd};
+use toml::{from_str, Spanned};
+#[macro_use]
+extern crate serde_derive;
+
+#[test]
+fn test_spans_impls() {
+    #[derive(Deserialize)]
+    struct Foo {
+        bar: Spanned<bool>,
+        baz: Spanned<String>,
+    }
+    let f: Foo = from_str(
+        "
+    bar = true
+    baz = \"yes\"
+    ",
+    )
+    .unwrap();
+    let g: Foo = from_str(
+        "
+    baz = \"yes\"
+    bar = true
+    ",
+    )
+    .unwrap();
+    assert!(f.bar.span() != g.bar.span());
+    assert!(f.baz.span() != g.baz.span());
+
+    // test that eq still holds
+    assert_eq!(f.bar, g.bar);
+    assert_eq!(f.baz, g.baz);
+
+    // test that Ord returns equal order
+    assert_eq!(f.bar.cmp(&g.bar), Ordering::Equal);
+    assert_eq!(f.baz.cmp(&g.baz), Ordering::Equal);
+
+    // test that PartialOrd returns equal order
+    assert_eq!(f.bar.partial_cmp(&g.bar), Some(Ordering::Equal));
+    assert_eq!(f.baz.partial_cmp(&g.baz), Some(Ordering::Equal));
+}