Add tests for utils and metadata

1 files changed, 48 insertions, 0 deletions

diff --git a/src/utils.rs b/src/utils.rs
index 4522f4c..01b6cdf 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -2,6 +2,7 @@ use std::fs::{copy, create_dir_all, read_dir};
 use std::io::Result;
 use std::path::Path;
 
+/// Recursively copies the contents of a directory.
 pub fn recursively_copy(source: &Path, target: &Path) -> Result<()> {
     let entries = read_dir(source)?;
     for entry in entries {
@@ -21,3 +22,50 @@ pub fn recursively_copy(source: &Path, target: &Path) -> Result<()> {
 
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use std::fs::create_dir_all;
+
+    use super::*;
+
+    use test_utilities::*;
+
+    #[test]
+    fn test_recursively_copies_directories() {
+        let test_dir = setup_test_dir();
+        let source_dir = test_dir.join("source");
+        let target_dir = test_dir.join("target");
+        let nested_dir = source_dir.join("nested");
+        let hidden_dir = source_dir.join(".hidden");
+        create_dir_all(&target_dir).expect("Could not create target test directory");
+        create_dir_all(&nested_dir).expect("Could not create nested test directory");
+        create_dir_all(&hidden_dir).expect("Could not create hidden test directory");
+        create_test_file(&source_dir.join("image.png"), "A beautiful pencil");
+        create_test_file(&nested_dir.join("hello.txt"), "I am here");
+        create_test_file(&nested_dir.join(".hidden"), "I am not here?");
+        create_test_file(&hidden_dir.join("in_plain_sight.mkv"), "Almost");
+        create_test_file(&hidden_dir.join(".hidden"), "I'm double hidden");
+
+        recursively_copy(&source_dir, &target_dir).expect("Copy failed on test directory");
+
+        assert_file_contents(&target_dir.join("image.png"), "A beautiful pencil");
+        assert_file_contents(&target_dir.join("nested/hello.txt"), "I am here");
+        assert_file_contents(&target_dir.join("nested/.hidden"), "I am not here?");
+        assert_file_contents(&target_dir.join(".hidden/in_plain_sight.mkv"), "Almost");
+        assert_file_contents(&target_dir.join(".hidden/.hidden"), "I'm double hidden");
+    }
+
+    #[test]
+    fn test_empty_directory() {
+        let test_dir = setup_test_dir();
+        let source_dir = test_dir.join("source");
+        let target_dir = test_dir.join("target");
+        create_dir_all(&source_dir).expect("Could not create source test directory");
+        create_dir_all(&target_dir).expect("Could not create target test directory");
+
+        recursively_copy(&source_dir, &target_dir).expect("Copy failed on empty test directory");
+
+        assert_eq!(target_dir.read_dir().unwrap().count(), 0);
+    }
+}