Add serde examples in tests and README

Cargo.toml

@@ -21,13 +21,4 @@ serde = { version = "1.0.130", features = ["derive"], optional = true }
 serde_json = "1.0"
 
 [features]
-default = []
-
-[[test]]
-path = "tests/compare.rs"
-name = "compare"
-
-[[test]]
-path = "tests/serde.rs"
-name = "serde"
-required-features = ["serde"]
+default = []

README.md

@@ -64,6 +64,22 @@ let ver = Version::new("1.2.4-pre1").with_options(opts).parse()?;
 assert!(range.test(&ver));
 ```
 
+### Serializing
+
+In order to allow serializing the semver structs allow the `serde` feature:
+
+```toml
+semver_rs = { version = "0.1", features = ["serde"] }
+```
+
+```rust
+use semver_rs::{Range, Options};
+
+let opts = Options::builder().loose(true).include_prerelease(true).build();
+let range = Range::new(">=1.2.3").with_options(opts).parse().unwrap();
+let _ = serde_json::to_string(&opts).unwrap();
+```
+
 ## Comparisons and considerations with other crates
 
 At the time of writing this README there's only one other crate in the Rust ecosystem capable of parsing semver - [steveklabnik/semver](https://github.com/steveklabnik/semver).

src/lib.rs

@@ -48,13 +48,24 @@
 //! use semver_rs::{Version, Range, Options};
 //!
 //! let opts = Options::builder().loose(true).include_prerelease(true).build();
-//! let range = Range::new(">=1.2.3").with_options(opts.clone()).parse()?;
-//! let ver = Version::new("1.2.4-pre1").with_options(opts.clone()).parse()?;
+//! let range = Range::new(">=1.2.3").with_options(opts).parse()?;
+//! let ver = Version::new("1.2.4-pre1").with_options(opts).parse()?;
 //!
 //! assert!(range.test(&ver));
 //!
 //! # Ok::<(), semver_rs::Error>(())
 //! ```
+//!
+//! #### Serialisation with Serde
+//! ```
+//! use semver_rs::{Range, Options};
+//!
+//! let opts = Options::builder().loose(true).include_prerelease(true).build();
+//! let range = Range::new(">=1.2.3").with_options(opts).parse()?;
+//! let _ = serde_json::to_string(&opts)?;
+//!
+//! # Ok::<(), Box<dyn std::error::Error + 'static>>(())
+//! ```
 
 mod builder;
 mod comparator;