added cache-path command

fmt


implemented review requests


added cache path test


changed printing fn

Author: ametel01

scarb/src/bin/scarb/args.rs

@@ -115,6 +115,8 @@ impl ScarbArgs {
 pub enum CacheSubcommand {
     /// Remove all cached dependencies.
     Clean,
+    /// Print the path of the cache directory.
+    Path,
 }
 
 /// Subcommand and its arguments.

scarb/src/bin/scarb/commands/cache_path.rs

@@ -0,0 +1,10 @@
+use anyhow::{Ok, Result};
+
+use scarb::{core::Config, ui::ValueMessage};
+
+#[tracing::instrument(skip_all, level = "info")]
+pub fn run(config: &Config) -> Result<()> {
+    let path = config.dirs().cache_dir.path_unchecked();
+    config.ui().print(ValueMessage::new("path", &path));
+    Ok(())
+}

scarb/src/bin/scarb/commands/mod.rs

@@ -9,6 +9,7 @@ use crate::args::{CacheSubcommand, Command};
 pub mod add;
 pub mod build;
 pub mod cache_clean;
+pub mod cache_path;
 pub mod clean;
 pub mod commands;
 pub mod external;
@@ -30,6 +31,7 @@ pub fn run(command: Command, config: &mut Config) -> Result<()> {
         Add(args) => add::run(args, config),
         Build(args) => build::run(args, config),
         Cache(CacheSubcommand::Clean) => cache_clean::run(config),
+        Cache(CacheSubcommand::Path) => cache_path::run(config),
         Clean => clean::run(config),
         Commands => commands::run(config),
         External(args) => external::run(args, config),

scarb/tests/cache.rs

@@ -26,3 +26,20 @@ fn simple_clean() {
         .success();
     cache_dir.assert(predicates::path::missing());
 }
+
+#[test]
+fn path_print() {
+    let t = TempDir::new().unwrap();
+    ProjectBuilder::start().build(&t);
+    let cache_dir = TempDir::new().unwrap();
+
+    Scarb::quick_snapbox()
+        .arg("cache")
+        .arg("path")
+        .env("SCARB_CACHE", cache_dir.path())
+        .current_dir(&t)
+        .assert()
+        .stdout_eq(format!("{}\n", cache_dir.path().display()))
+        .success();
+    cache_dir.assert(predicates::path::is_dir());
+}