lib: update getters names

According to RFC #0344
(github.com/rust-lang/rfcs/blob/master/text/0344-conventions-galore.md)
a getter and a setter for the attribute `foo` should be named,
respectively, `foo()` and `set_foo()`.

src/lib.rs

@@ -29,25 +29,25 @@ impl Config {
         Ok(Config { filename, pattern, case_sensitive })
     }
 
-    pub fn get_filename(&self) -> &str {
+    pub fn filename(&self) -> &str {
         &self.filename
     }
 
-    pub fn get_pattern(&self) -> &str {
+    pub fn pattern(&self) -> &str {
         &self.pattern
     }
 }
 
 pub fn run(config: Config) -> Result<(), Box<Error>> {
-    let mut file = File::open(config.get_filename())?;
+    let mut file = File::open(config.filename())?;
 
     let mut contents = String::new();
     file.read_to_string(&mut contents)?;
 
     let matches = if config.case_sensitive {
-        search_case_sensitive(config.get_pattern(), &contents)
+        search_case_sensitive(config.pattern(), &contents)
     } else {
-        search_case_insensitive(config.get_pattern(), &contents)
+        search_case_insensitive(config.pattern(), &contents)
     };
 
     for item in matches {

src/test.rs

@@ -5,7 +5,7 @@ const BIN_NAME: &'static str = "bin_name";
 const FILENAME: &'static str = "__program_run_test_file__";
 const PATTERN: &'static str = "pattern";
 
-fn get_args() -> Vec<String> {
+fn args() -> Vec<String> {
     let bin_name = BIN_NAME.to_string();
     let pattern = PATTERN.to_string();
     let filename = FILENAME.to_string();
@@ -47,7 +47,7 @@ fn delete_file(filename: String) -> Result<process::Output, Box<Error>> {
 
 #[test]
 fn create_config() {
-    let args = get_args();
+    let args = args();
 
     Config::new(&args).unwrap_or_else(|err| {
         panic!(err);
@@ -66,7 +66,7 @@ fn create_invalid_config() {
 
 #[test]
 fn base_program_run() {
-    let args = get_args();
+    let args = args();
     let config = Config::new(&args).unwrap();
 
     let result = touch_file(FILENAME.to_string()).unwrap();