1 files changed, 26 insertions, 0 deletions
diff --git a/srv/chat/user_test.go b/srv/chat/user_test.go
new file mode 100644
index 0000000..2169cde
--- /dev/null
+++ b/srv/chat/user_test.go
@@ -0,0 +1,26 @@
+package chat
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUserIDCalculator(t *testing.T) {
+
+	const name, password = "name", "password"
+
+	c := NewUserIDCalculator([]byte("foo"))
+
+	// calculating with same params twice should result in same UserID
+	userID := c.Calculate(name, password)
+	assert.Equal(t, userID, c.Calculate(name, password))
+
+	// changing either name or password should result in a different Hash
+	assert.NotEqual(t, userID.Hash, c.Calculate(name+"!", password).Hash)
+	assert.NotEqual(t, userID.Hash, c.Calculate(name, password+"!").Hash)
+
+	// changing the secret should change the UserID
+	c.Secret = []byte("bar")
+	assert.NotEqual(t, userID, c.Calculate(name, password))
+}