add some tests for the shared crate

this should test some stuff out in the test crate

crates/cli/src/commands/add.rs

@@ -13,7 +13,7 @@ pub(crate) fn add(
 	separator: &String,
 ) -> Result<(), Error> {
 	let names_file = names::read_names_file(path)?;
-	let mut names = names::load_names(names_file)?;
+	let mut names = names::load_names(&names_file)?;
 
 	if names.iter().any(|site| site.url.contains(url)) {
 		return Err(Error {

crates/cli/src/commands/print.rs

@@ -15,7 +15,7 @@ pub(crate) fn print(
 	json: bool,
 ) -> Result<(), Error> {
 	let names_file = names::read_names_file(path)?;
-	let mut names = names::load_names(names_file)?;
+	let mut names = names::load_names(&names_file)?;
 
 	if let Some(filter) = filter {
 		names.retain(|f| &f.url == filter);

crates/cli/src/commands/remove.rs

@@ -5,7 +5,7 @@ use crate::commands::utils::{site_string, PrintOptions};
 
 pub(crate) fn remove(path: &Path, url: &String, separator: &String) -> Result<(), Error> {
 	let names_file = names::read_names_file(path)?;
-	let mut names = names::load_names(names_file)?;
+	let mut names = names::load_names(&names_file)?;
 
 	names.retain(|site| {
 		if &site.url == url {

crates/shared/src/errors.rs

@@ -14,10 +14,8 @@ pub struct Error {
 	pub data: String,
 }
 
-pub(crate) static DIRECTORIES_ERROR_MESSAGE: &str = "could not retreive a valid home path from the operating system. maybe try to define the HOME enviroment variable if you\'re on a unix or unix like operating system.";
-
-impl core::fmt::Debug for Error {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+impl Error {
+	fn error_fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 		write!(
 			f,
 			"A {:?} error has occured.\nDetails: {}",
@@ -25,3 +23,19 @@ impl core::fmt::Debug for Error {
 		)
 	}
 }
+
+impl std::error::Error for Error {}
+
+pub(crate) static DIRECTORIES_ERROR_MESSAGE: &str = "could not retreive a valid home path from the operating system. maybe try to define the HOME enviroment variable if you\'re on a unix or unix like operating system.";
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.error_fmt(f)
+    }
+}
+
+impl std::fmt::Debug for Error {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		self.error_fmt(f)
+	}
+}

crates/shared/src/lib.rs

@@ -1,3 +1,5 @@
 pub mod directories;
 pub mod errors;
 pub mod names;
+#[cfg(test)]
+mod tests;

crates/shared/src/names.rs

@@ -8,7 +8,7 @@ pub struct Site {
 	pub name: Option<String>,
 }
 
-pub fn load_names(names: String) -> Result<Vec<Site>, Error> {
+pub fn load_names(names: &str) -> Result<Vec<Site>, Error> {
 	match serde_json::from_str::<Vec<Site>>(&names) {
 		Ok(content) => {
 			log::debug!("successfully parsed names.json.");

crates/shared/src/tests.rs

@@ -0,0 +1,39 @@
+use crate::{
+	errors::Error,
+	names::{load_names, read_names_file},
+};
+use std::{env, error};
+
+#[test]
+fn test_name_parsing() -> Result<(), Error> {
+	let names =
+		load_names(r#"[{"url": "sus.com", "name": "sussy"}, {"url": "sussy.com", "name": null}]"#)?;
+
+	assert_eq!(names.len(), 2);
+	assert_eq!(names[0].url, "sus.com");
+	assert_eq!(names[0].name.as_ref().unwrap(), "sussy");
+	assert_eq!(names[1].url, "sussy.com");
+	assert!(names[1].name.is_none());
+
+	Ok(())
+}
+
+#[test]
+fn test_invalid_parsing() {
+	let no_url_field = load_names(r#"[{"name":""}]"#);
+	let no_fields = load_names(r#"[{}]"#);
+	let trailing_array = load_names("[");
+
+	assert!(no_url_field.is_err());
+	assert!(no_fields.is_err());
+	assert!(trailing_array.is_err());
+}
+
+#[test]
+fn reading_a_non_existent_names_file() -> Result<(), Box<dyn error::Error>> {
+	let temp_file = env::temp_dir().join("meowy-test-names.json");
+	let contents = read_names_file(&temp_file)?;
+	assert_eq!(contents, "[]");
+	std::fs::remove_file(temp_file)?;
+	Ok(())
+}

src/sites.rs

@@ -36,5 +36,5 @@ pub fn init_names() -> Result<(), Error> {
 fn get_names() -> Result<Vec<Site>, Error> {
 	let names_path = directories::get_names_path()?;
 	let names_file = names::read_names_file(&names_path)?;
-	names::load_names(names_file)
+	names::load_names(&names_file)
 }