feat(fs): add dir_create and dir_create_all

Closes kemitix/kxio#25

src/fs/like.rs

@@ -5,10 +5,14 @@ use std::path::{Path, PathBuf};
 pub trait FileSystemLike {
     fn base(&self) -> &Path;
 
+    fn dir_create(&self, path: &Path) -> Result<()>;
+    fn dir_create_all(&self, path: &Path) -> Result<()>;
+
     fn file_read_to_string(&self, path: &Path) -> Result<String>;
     fn file_write(&self, path: &Path, contents: &str) -> Result<()>;
 
     fn path_exists(&self, path: &Path) -> Result<bool>;
+    fn path_is_dir(&self, path: &Path) -> Result<bool>;
     fn path_is_file(&self, path: &Path) -> Result<bool>;
     fn path_of(&self, path: PathBuf) -> Result<PathBuf>;
 }

src/fs/mod.rs

@@ -32,7 +32,6 @@ pub enum FileSystem {
     Real(real::RealFileSystem),
     Temp(temp::TempFileSystem),
 }
-
 impl std::ops::Deref for FileSystem {
     type Target = dyn FileSystemLike;
 

src/fs/real.rs

@@ -13,6 +13,15 @@ impl super::FileSystemLike for RealFileSystem {
         &self.base
     }
 
+    fn dir_create(&self, path: &Path) -> super::Result<()> {
+        self.validate(path)?;
+        std::fs::create_dir(path).map_err(Into::into)
+    }
+
+    fn dir_create_all(&self, path: &Path) -> super::Result<()> {
+        self.validate(path)?;
+        std::fs::create_dir_all(path).map_err(Into::into)
+    }
 
     fn file_read_to_string(&self, path: &Path) -> super::Result<String> {
         self.validate(path)?;
@@ -29,6 +38,11 @@ impl super::FileSystemLike for RealFileSystem {
         Ok(path.exists())
     }
 
+    fn path_is_dir(&self, path: &Path) -> super::Result<bool> {
+        self.validate(path)?;
+        Ok(path.is_dir())
+    }
+
     fn path_is_file(&self, path: &Path) -> super::Result<bool> {
         self.validate(path)?;
         Ok(path.is_file())

src/tests/fs.rs

@@ -6,15 +6,50 @@ type TestResult = Result<(), crate::fs::Error>;
 
 #[test]
 fn write_read_file_exists() -> TestResult {
-    let temp_fs = fs::temp()?;
-    let name: PathBuf = temp_fs.path_of("foo".into())?;
-    temp_fs.file_write(&name, "content")?;
-    let c = temp_fs.file_read_to_string(&name)?;
+    let fs = fs::temp()?;
+    let pathbuf: PathBuf = fs.path_of("foo".into())?;
+
+    fs.file_write(&pathbuf, "content")?;
+    let c = fs.file_read_to_string(&pathbuf)?;
     assert_eq!(c, "content");
-    let exists = temp_fs.path_exists(&name)?;
+
+    let exists = fs.path_exists(&pathbuf)?;
     assert!(exists);
-    let is_file = temp_fs.path_is_file(&name)?;
+
+    let is_file = fs.path_is_file(&pathbuf)?;
     assert!(is_file);
 
     Ok(())
 }
+
+#[test]
+fn create_dir_should_create_a_dir() -> TestResult {
+    let fs = fs::temp()?;
+    let pathbuf = fs.path_of("subdir".into())?;
+
+    fs.dir_create(&pathbuf)?;
+
+    let exists = fs.path_exists(&pathbuf)?;
+    assert!(exists);
+
+    let is_dir = fs.path_is_dir(&pathbuf)?;
+    assert!(is_dir);
+
+    Ok(())
+}
+
+#[test]
+fn create_dir_all_should_create_a_dir() -> TestResult {
+    let fs = fs::temp()?;
+    let pathbuf = fs.base().join("subdir").join("child");
+
+    fs.dir_create_all(&pathbuf)?;
+
+    let exists = fs.path_exists(&pathbuf)?;
+    assert!(exists, "path exists");
+
+    let is_dir = fs.path_is_dir(&pathbuf)?;
+    assert!(is_dir, "path is a directory");
+
+    Ok(())
+}