Add some sanity tests for CollectionRef

rust-bindings/rust/src/collection_ref/tests.rs

@@ -0,0 +1,77 @@
+use super::*;
+use std::hash::{Hash, Hasher};
+use std::collections::hash_map::DefaultHasher;
+
+fn hash(v: &impl Hash) -> u64 {
+    let mut s = DefaultHasher::new();
+    v.hash(&mut s);
+    s.finish()
+}
+
+#[test]
+fn same_value_should_be_equal() {
+    let r = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    assert_eq!(r, r);
+}
+
+#[test]
+fn equal_values_should_be_equal() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    let b = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    assert_eq!(a, b);
+}
+
+#[test]
+fn equal_values_without_collection_id_should_be_equal() {
+    let a = CollectionRef::new(None, "ref-name").unwrap();
+    let b = CollectionRef::new(None, "ref-name").unwrap();
+    assert_eq!(a, b);
+}
+
+#[test]
+fn different_values_should_not_be_equal() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref1").unwrap();
+    let b = CollectionRef::new("io.gitlab.fkrull", "ref2").unwrap();
+    assert_ne!(a, b);
+}
+
+#[test]
+fn new_with_invalid_collection_id_should_return_none() {
+    let r = CollectionRef::new(".abc", "ref");
+    assert_eq!(r, None);
+}
+
+#[test]
+fn hash_for_equal_values_should_be_equal() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    let b = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    assert_eq!(hash(&a), hash(&b));
+}
+
+#[test]
+fn hash_for_values_with_different_collection_id_should_be_different() {
+    let a = CollectionRef::new("io.gitlab.fkrull1", "ref").unwrap();
+    let b = CollectionRef::new("io.gitlab.fkrull2", "ref").unwrap();
+    assert_ne!(hash(&a), hash(&b));
+}
+
+#[test]
+fn hash_for_values_with_different_ref_id_should_be_different() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref-1").unwrap();
+    let b = CollectionRef::new("io.gitlab.fkrull", "ref-2").unwrap();
+    assert_ne!(hash(&a), hash(&b));
+}
+
+#[test]
+fn hash_should_be_different_if_collection_id_is_absent() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    let b = CollectionRef::new(None, "ref").unwrap();
+    assert_ne!(hash(&a), hash(&b));
+}
+
+#[test]
+fn clone_should_be_equal_to_original_value() {
+    let a = CollectionRef::new("io.gitlab.fkrull", "ref").unwrap();
+    let b = a.clone();
+    assert_eq!(a, b);
+}