Feat: Add FallbackCommand for HTTP Strategy, refactor packages strategies (#175)

Add FallbackCommand for HTTP Strategy, refactor packages strategies, improve histories implementations.

historystore/history_store_test.go

@@ -0,0 +1,47 @@
+package historystore
+
+import (
+	"testing"
+
+	"github.com/mariocandela/beelzebub/v3/plugins"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewHistoryStore(t *testing.T) {
+	hs := NewHistoryStore()
+	assert.NotNil(t, hs)
+	assert.NotNil(t, hs.sessions)
+}
+
+func TestHasKey(t *testing.T) {
+	hs := NewHistoryStore()
+	hs.sessions["testKey"] = []plugins.Message{}
+	assert.True(t, hs.HasKey("testKey"))
+	assert.False(t, hs.HasKey("nonExistentKey"))
+}
+
+func TestQuery(t *testing.T) {
+	hs := NewHistoryStore()
+	expectedMessages := []plugins.Message{{Role: "user", Content: "Hello"}}
+	hs.sessions["testKey"] = expectedMessages
+	actualMessages := hs.Query("testKey")
+	assert.Equal(t, expectedMessages, actualMessages)
+}
+
+func TestAppend(t *testing.T) {
+	hs := NewHistoryStore()
+	message1 := plugins.Message{Role: "user", Content: "Hello"}
+	message2 := plugins.Message{Role: "assistant", Content: "Hi"}
+	hs.Append("testKey", message1)
+	assert.Equal(t, []plugins.Message{message1}, hs.sessions["testKey"])
+	hs.Append("testKey", message2)
+	assert.Equal(t, []plugins.Message{message1, message2}, hs.sessions["testKey"])
+}
+
+func TestAppendNilSessions(t *testing.T) {
+	hs := &HistoryStore{}
+	message1 := plugins.Message{Role: "user", Content: "Hello"}
+	hs.Append("testKey", message1)
+	assert.NotNil(t, hs.sessions)
+	assert.Equal(t, []plugins.Message{message1}, hs.sessions["testKey"])
+}