From 15390073f288b869f4c3f6485a7ec457b2145ee7 Mon Sep 17 00:00:00 2001
From: Thiago Nache Carvalho <thiagonbcarvalho@gmail.com>
Date: Wed, 28 Jun 2023 06:53:20 -0300
Subject: [PATCH] Create truncates the file if it already exist. We should use
 OpenFile with append mode. Also fixes the test to stop if it cannot write
 data to the database

---
 gobdb.go      | 2 +-
 gobdb_test.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gobdb.go b/gobdb.go
index 2840129..a734f51 100644
--- a/gobdb.go
+++ b/gobdb.go
@@ -108,7 +108,7 @@ func (db Gobdb[T]) List() []T {
 //	during the process, the method returns the error with details about what
 //	went wrong.
 func (db *Gobdb[T]) Add(d ...T) error {
-	file, err := os.Create(db.path)
+	file, err := os.OpenFile(db.path, os.O_APPEND|os.O_WRONLY, os.ModeAppend)
 	if err != nil {
 		return fmt.Errorf("unable to open file: %w", err)
 	}
diff --git a/gobdb_test.go b/gobdb_test.go
index e9f2520..ff67720 100644
--- a/gobdb_test.go
+++ b/gobdb_test.go
@@ -30,7 +30,7 @@ func TestAdd(t *testing.T) {
 	want := []string{"barbara", "victor", "walter"}
 	err = db.Add(want...)
 	if err != nil {
-		t.Errorf("unable to add data %v: %s", want, err)
+		t.Fatalf("unable to add data %v: %s", want, err)
 	}
 	got := db.List()
 	if !cmp.Equal(want, got) {