From 5b78c3dbd44f3887d281c97921fdc909f8ccbcbe Mon Sep 17 00:00:00 2001
From: CPunch <sethtstubbs@gmail.com>
Date: Sat, 25 Nov 2023 23:36:23 -0600
Subject: [PATCH] added entity_test.go

---
 internal/entity/entity_test.go | 40 ++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 internal/entity/entity_test.go

diff --git a/internal/entity/entity_test.go b/internal/entity/entity_test.go
new file mode 100644
index 0000000..b043b11
--- /dev/null
+++ b/internal/entity/entity_test.go
@@ -0,0 +1,40 @@
+package entity_test
+
+import (
+	"testing"
+
+	"github.com/CPunch/gopenfusion/internal/entity"
+)
+
+func TestChunkSliceDifference(t *testing.T) {
+	chunks := []*entity.Chunk{
+		entity.NewChunk(entity.MakeChunkPosition(0, 0)),
+		entity.NewChunk(entity.MakeChunkPosition(0, 1)),
+		entity.NewChunk(entity.MakeChunkPosition(1, 0)),
+		entity.NewChunk(entity.MakeChunkPosition(1, 1)),
+	}
+
+	c1 := []*entity.Chunk{
+		chunks[0],
+		chunks[1],
+		chunks[2],
+		chunks[3],
+	}
+
+	c2 := []*entity.Chunk{
+		chunks[0],
+		chunks[1],
+		chunks[2],
+	}
+
+	diff := entity.ChunkSliceDifference(c1, c2)
+	if len(diff) != 1 {
+		t.Logf("%+v", diff)
+		t.Error("expected 1 chunk in difference")
+	}
+
+	if diff[0] != chunks[3] {
+		t.Logf("%+v", diff)
+		t.Error("wrong difference")
+	}
+}