test: enable logging in tests (#2151)

* test: enable logging in tests

* fix clippy

src/logger.rs

@@ -17,8 +17,8 @@ pub struct StarshipLogger {
     log_level: Level,
 }
 
-impl StarshipLogger {
-    fn new() -> Self {
+impl Default for StarshipLogger {
+    fn default() -> Self {
         let log_dir = env::var_os("STARSHIP_CACHE")
             .map(PathBuf::from)
             .unwrap_or_else(|| {
@@ -56,6 +56,19 @@ impl StarshipLogger {
     }
 }
 
+impl StarshipLogger {
+    /// Override the minimum log level
+    pub fn set_log_level(&mut self, level: log::Level) {
+        self.log_level = level;
+    }
+
+    /// Override the log level path
+    /// This won't change anything if a log file was already opened
+    pub fn set_log_file_path(&mut self, path: PathBuf) {
+        self.log_file_path = path;
+    }
+}
+
 impl log::Log for StarshipLogger {
     fn enabled(&self, metadata: &Metadata) -> bool {
         metadata.level() <= self.log_level
@@ -119,6 +132,6 @@ impl log::Log for StarshipLogger {
 }
 
 pub fn init() {
-    log::set_boxed_logger(Box::new(StarshipLogger::new())).unwrap();
+    log::set_boxed_logger(Box::new(StarshipLogger::default())).unwrap();
     log::set_max_level(LevelFilter::Trace);
 }

src/test/mod.rs

@@ -1,5 +1,7 @@
 use crate::config::StarshipConfig;
 use crate::context::{Context, Shell};
+use crate::logger::StarshipLogger;
+use log::{Level, LevelFilter};
 use once_cell::sync::Lazy;
 use std::io;
 use std::path::PathBuf;
@@ -12,6 +14,21 @@ static FIXTURE_DIR: Lazy<PathBuf> =
 static GIT_FIXTURE: Lazy<PathBuf> = Lazy::new(|| FIXTURE_DIR.join("git-repo.bundle"));
 static HG_FIXTURE: Lazy<PathBuf> = Lazy::new(|| FIXTURE_DIR.join("hg-repo.bundle"));
 
+static LOGGER: Lazy<()> = Lazy::new(|| {
+    let mut logger = StarshipLogger::default();
+
+    // Don't log to files during tests
+    let nul = if cfg!(windows) { "nul" } else { "/dev/null" };
+    let nul = PathBuf::from(nul);
+
+    // Maxmimum log level
+    log::set_max_level(LevelFilter::Trace);
+    logger.set_log_level(Level::Trace);
+    logger.set_log_file_path(nul);
+
+    log::set_boxed_logger(Box::new(logger)).unwrap();
+});
+
 /// Render a specific starship module by name
 pub struct ModuleRenderer<'a> {
     name: &'a str,
@@ -21,6 +38,9 @@ pub struct ModuleRenderer<'a> {
 impl<'a> ModuleRenderer<'a> {
     /// Creates a new ModuleRenderer
     pub fn new(name: &'a str) -> Self {
+        // Start logger
+        Lazy::force(&LOGGER);
+
         let mut context = Context::new_with_dir(clap::ArgMatches::default(), PathBuf::new());
         context.shell = Shell::Unknown;
         context.config = StarshipConfig { config: None };