use tempfile::tempdir for tests

Cargo.lock

@@ -159,6 +159,7 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
+ "tempfile",
  "zip",
  "zstd",
 ]
@@ -293,6 +294,15 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "453440c271cf5577fd2a40e4942540cb7d0d2f85e27c8d07dd0023c925a67541"
 
+[[package]]
+name = "fastrand"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7a407cfaa3385c4ae6b23e84623d48c2798d06e3e6a1878f7f59f17b3f86499"
+dependencies = [
+ "instant",
+]
+
 [[package]]
 name = "flate2"
 version = "1.0.24"
@@ -376,6 +386,15 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.3"
@@ -666,6 +685,15 @@ version = "0.6.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
 
+[[package]]
+name = "remove_dir_all"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "ron"
 version = "0.6.6"
@@ -775,6 +803,20 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
+dependencies = [
+ "cfg-if 1.0.0",
+ "fastrand",
+ "libc",
+ "redox_syscall",
+ "remove_dir_all",
+ "winapi",
+]
+
 [[package]]
 name = "termcolor"
 version = "1.1.3"

Cargo.toml

@@ -19,6 +19,9 @@ clap = { version = "3.2.22", features = ["derive"] }
 bincode = "^2.0.0-rc.2"
 zstd = "^0.10"
 
+[dev-dependencies]
+tempfile = "3.3"
+
 [profile.release]
 opt-level = 3
 debug = false

src/db.rs

@@ -307,9 +307,8 @@ where
 
 #[cfg(test)]
 mod test {
-    use rand::RngCore;
-
     use super::*;
+    use tempfile::tempdir;
 
     #[derive(bincode::Encode, bincode::Decode, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
     struct TestData {
@@ -322,10 +321,10 @@ mod test {
 
     #[test]
     fn test_write_read() {
-        let mut rng = rand::thread_rng();
+        let dir = tempdir().expect("tempdir");
-        let tempfile = std::env::temp_dir().with_file_name(format!("test-{}.tmp", rng.next_u32()));
+        let tmpfile = dir.path().join("test.tmp");
         let opts = WriterOpts { compress_lvl: 1, data_buf_size: 10 * 1024 * 1024, out_buf_size: 10 * 1024 * 1024, current_buf_size: 4096 };
-        let mut writer: Writer<TestData> = Writer::new(&tempfile, opts).expect("new writer");
+        let mut writer: Writer<TestData> = Writer::new(&tmpfile, opts).expect("new writer");
 
         let items_iter = gen_data(5);
         let items: Vec<TestData> = items_iter.collect();
@@ -333,24 +332,21 @@ mod test {
         writer.load(&mut items.clone().into_iter()).expect("load");
         writer.finish().expect("finish write");
 
-        let mut reader: Reader<TestData> = Reader::new(&tempfile, 2048).expect("new reader");
+        let mut reader: Reader<TestData> = Reader::new(&tmpfile, 2048).expect("new reader");
         assert_eq!(items.len(), reader.len());
 
         for (idx,item) in items.iter().enumerate() {
             let ritem = reader.get(idx).expect("get");
             assert_eq!(*item, ritem);
         }
-
-        let r = fs::remove_file(tempfile);
-        drop(r);
     }
 
     #[test]
     fn test_write_read_iter() {
-        let mut rng = rand::thread_rng();
+        let dir = tempdir().expect("tempdir");
-        let tempfile = std::env::temp_dir().with_file_name(format!("test-{}.tmp", rng.next_u32()));
+        let tmpfile = dir.path().join("test.tmp");
         let opts = WriterOpts { compress_lvl: 1, data_buf_size: 10 * 1024 * 1024, out_buf_size: 10 * 1024 * 1024, current_buf_size: 4096 };
-        let mut writer: Writer<TestData> = Writer::new(&tempfile, opts).expect("new writer");
+        let mut writer: Writer<TestData> = Writer::new(&tmpfile, opts).expect("new writer");
 
         let items_iter = gen_data(10);
         let items: Vec<TestData> = items_iter.collect();
@@ -358,14 +354,11 @@ mod test {
         writer.load(&mut items.clone().into_iter()).expect("load");
         writer.finish().expect("finish write");
 
-        let mut reader: Reader<TestData> = Reader::new(&tempfile, 2048).expect("new reader");
+        let mut reader: Reader<TestData> = Reader::new(&tmpfile, 2048).expect("new reader");
         assert_eq!(items.len(), reader.len());
 
         items.into_iter().zip(reader.iter()).for_each(|pair| {
             assert_eq!(pair.0, pair.1);
         });
-
-        let r = fs::remove_file(tempfile);
-        drop(r);
     }
 }