diff --git a/internal/tui/components/chat/editor/history_test.go b/internal/tui/components/chat/editor/history_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..ae97a85c8a9687af9f624c74337ffcb2edcef343
--- /dev/null
+++ b/internal/tui/components/chat/editor/history_test.go
@@ -0,0 +1,39 @@
+package editor
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIntialiseHistoryWithExistingValue(t *testing.T) {
+	fakeHistory := []string{
+		"1. This is the first message",
+		"2. This is the second message",
+		"3. This is the third message",
+	}
+
+	h := InitialiseHistory("This is existing content in the input field", fakeHistory)
+
+	assert.Equal(t, h.ExistingValue(), "This is existing content in the input field")
+	assert.Equal(t, h.Value(), "This is existing content in the input field")
+}
+
+func TestIntialiseHistoryScrollUp(t *testing.T) {
+	fakeHistory := []string{
+		"1. This is the first message",
+		"2. This is the second message",
+		"3. This is the third message",
+	}
+
+	h := InitialiseHistory("This is existing content in the input field", fakeHistory)
+	assert.Equal(t, h.ExistingValue(), "This is existing content in the input field")
+	assert.Equal(t, h.Value(), "This is existing content in the input field")
+
+	h.ScrollUp()
+	assert.Equal(t, h.Value(), "3. This is the third message")
+	h.ScrollUp()
+	assert.Equal(t, h.Value(), "2. This is the second message")
+	h.ScrollUp()
+	assert.Equal(t, h.Value(), "1. This is the first message")
+}