test(api): add tests for From<Cow<'static, str>>

Author: germangarces

.gitignore

@@ -1 +1,2 @@
 target
+.idea

clap_builder/src/builder/os_str.rs

@@ -1,4 +1,6 @@
 use crate::builder::Str;
+#[cfg(feature = "string")]
+use std::borrow::Cow;
 
 /// A UTF-8-encoded fixed string
 ///
@@ -328,3 +330,25 @@ impl std::hash::Hash for Inner {
         self.as_os_str().hash(state);
     }
 }
+
+#[cfg(test)]
+#[cfg(feature = "string")]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_borrowed() {
+        let cow = Cow::Borrowed("hello");
+        let osstr = OsStr::from(cow);
+        assert_eq!(osstr, OsStr::from("hello"));
+    }
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_owned() {
+        let cow = Cow::Owned("world".to_string());
+        let osstr = OsStr::from(cow);
+        assert_eq!(osstr, OsStr::from("world"));
+    }
+}

clap_builder/src/builder/str.rs

@@ -1,3 +1,6 @@
+#[cfg(feature = "string")]
+use std::borrow::Cow;
+
 /// A UTF-8-encoded fixed string
 ///
 /// <div class="warning">
@@ -312,3 +315,26 @@ impl std::hash::Hash for Inner {
         self.as_str().hash(state);
     }
 }
+
+
+#[cfg(test)]
+#[cfg(feature = "string")]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_borrowed() {
+        let cow = Cow::Borrowed("hello");
+        let str = Str::from(cow);
+        assert_eq!(str, Str::from("hello"));
+    }
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_owned() {
+        let cow = Cow::Owned("world".to_string());
+        let str = Str::from(cow);
+        assert_eq!(str, Str::from("world"));
+    }
+}

clap_builder/src/builder/styled_str.rs

@@ -1,4 +1,5 @@
 #![cfg_attr(not(feature = "usage"), allow(dead_code))]
+use std::borrow::Cow;
 
 /// Terminal-styling container
 ///
@@ -252,3 +253,22 @@ mod wrap_tests {
         );
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn from_cow_borrowed() {
+        let cow = Cow::Borrowed("hello");
+        let styled = StyledStr::from(cow);
+        assert_eq!(styled, StyledStr::from("hello"));
+    }
+
+    #[test]
+    fn from_cow_owned() {
+        let cow = Cow::Owned("world".to_string());
+        let styled = StyledStr::from(cow);
+        assert_eq!(styled, StyledStr::from("world"));
+    }
+}

clap_builder/src/util/id.rs

@@ -1,4 +1,6 @@
 use crate::builder::Str;
+#[cfg(feature = "string")]
+use std::borrow::Cow;
 
 /// [`Arg`][crate::Arg] or [`ArgGroup`][crate::ArgGroup] identifier
 ///
@@ -162,3 +164,25 @@ impl PartialEq<Id> for String {
         PartialEq::eq(other, self)
     }
 }
+
+#[cfg(test)]
+#[cfg(feature = "string")]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_borrowed() {
+        let cow = Cow::Borrowed("hello");
+        let id = Id::from(cow);
+        assert_eq!(id, Id::from("hello"));
+    }
+
+    #[test]
+    #[cfg(feature = "string")]
+    fn from_cow_owned() {
+        let cow = Cow::Owned("world".to_string());
+        let id = Id::from(cow);
+        assert_eq!(id, Id::from("world"));
+    }
+}