feat: realm tests (#21)

* 'TestTransferOwnership' don't pass

* add test for func TransferOwnership

* fist test for func TestTransferOwnership

* func TestTransferOwnership PASS

* func TestTransferOwnership PASS

---------

Co-authored-by: théo dub <[email protected]>

api/r/memeland/memeland_test.gno

@@ -0,0 +1,68 @@
+package memeland
+
+import (
+	"std"
+	"testing"
+	"time"
+	"sort"
+
+	"gno.land/p/demo/memeland"
+    "gno.land/p/demo/testutils"
+)
+
+func TestPostMeme(t *testing.T) {
+	m := memeland.NewMemeland()
+	data := "Test meme data"
+	timestamp := time.Now().Unix()
+	id := m.PostMeme(data, timestamp)
+	if id == "" {
+		t.Errorf("Expected valid ID, got empty string")
+	}
+}
+
+
+func TestUpvote(t *testing.T) {
+	m := memeland.NewMemeland()
+	id := m.PostMeme("Another test meme", time.Now().Unix()) 
+	result := m.Upvote(id)
+	if result != "upvote successful" {
+		t.Errorf("Expected 'upvote successful', got %s", result)
+	}
+}
+
+
+func TestGetPostsInRange(t *testing.T) {
+	m := memeland.NewMemeland()
+	startTimestamp := time.Now().Add(-24 * time.Hour).Unix()
+	endTimestamp := time.Now().Unix()                       
+	page, pageSize := 1, 10
+	sortBy := "DATE_CREATED"
+	m.PostMeme("Old Meme", startTimestamp-10)
+	m.PostMeme("New Meme", endTimestamp-10)
+	result := m.GetPostsInRange(startTimestamp, endTimestamp, page, pageSize, sortBy)
+	if result == "" || result == "[]" {
+		t.Errorf("Expected non-empty result, got %s", result)
+	}
+}
+
+
+func TestRemovePost(t *testing.T) {
+	m := memeland.NewMemeland()
+	id := m.PostMeme("Meme to be deleted", time.Now().Unix())
+	removedID := m.RemovePost(id)
+	if removedID != id {
+		t.Errorf("Expected %s to be removed, got %s", id, removedID)
+	}
+}
+
+func TestTransferOwnership(t *testing.T) {
+	m := memeland.NewMemeland()
+	newOwner := testutils.TestAddress("g1newowneraddress")
+	err := m.TransferOwnership(std.Address(newOwner))
+	if err != nil {
+		t.Errorf("Expected no error, got %s", err)
+	}
+	if m.Owner() != std.Address(newOwner) {
+		t.Errorf("Expected new owner to be %s, got %s", newOwner, m.Owner())
+	}
+}