Add a test covering DB::open_cf_descriptors()

tests/test_column_family.rs

@@ -14,7 +14,7 @@
 //
 extern crate rocksdb;
 
-use rocksdb::{DB, MergeOperands, Options};
+use rocksdb::{DB, MergeOperands, Options, ColumnFamilyDescriptor};
 
 #[test]
 pub fn test_column_family() {
@@ -166,3 +166,43 @@ fn test_provided_merge(_: &[u8],
     }
     result
 }
+
+#[test]
+pub fn test_column_family_with_options() {
+    let path = "_rust_rocksdb_cf_with_optionstest";
+    {
+        let mut cfopts = Options::default();
+        cfopts.set_max_write_buffer_number(16);
+        let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cfopts);
+
+        let mut opts = Options::default();
+        opts.create_if_missing(true);
+        opts.create_missing_column_families(true);
+
+        let cfs = vec![cf_descriptor];
+        match DB::open_cf_descriptors(&opts, path, cfs) {
+            Ok(_) => println!("created db with column family descriptors succesfully"),
+            Err(e) => {
+                panic!("could not create new database with column family descriptors: {}", e);
+            }
+        }
+    }
+
+    {
+        let mut cfopts = Options::default();
+        cfopts.set_max_write_buffer_number(16);
+        let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cfopts);
+
+        let opts = Options::default();
+        let cfs = vec![cf_descriptor];
+
+        match DB::open_cf_descriptors(&opts, path, cfs) {
+            Ok(_) => println!("succesfully re-opened database with column family descriptorrs"),
+            Err(e) => {
+                panic!("unable to re-open database with column family descriptors: {}", e);
+            }
+        }
+    }
+
+    assert!(DB::destroy(&Options::default(), path).is_ok());
+}