Streams (#47)

* Streams Service (WIP)

* Complete Streams Service

streams/handler/list_conversations_test.go

@@ -0,0 +1,55 @@
+package handler_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/micro/services/streams/handler"
+	pb "github.com/micro/services/streams/proto"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestListConversations(t *testing.T) {
+	h := testHandler(t)
+
+	// seed some data
+	var cRsp1 pb.CreateConversationResponse
+	err := h.CreateConversation(context.TODO(), &pb.CreateConversationRequest{
+		Topic: "HelloWorld", GroupId: uuid.New().String(),
+	}, &cRsp1)
+	if err != nil {
+		t.Fatalf("Error creating conversation: %v", err)
+		return
+	}
+	var cRsp2 pb.CreateConversationResponse
+	err = h.CreateConversation(context.TODO(), &pb.CreateConversationRequest{
+		Topic: "FooBar", GroupId: uuid.New().String(),
+	}, &cRsp2)
+	if err != nil {
+		t.Fatalf("Error creating conversation: %v", err)
+		return
+	}
+
+	t.Run("MissingGroupID", func(t *testing.T) {
+		var rsp pb.ListConversationsResponse
+		err := h.ListConversations(context.TODO(), &pb.ListConversationsRequest{}, &rsp)
+		assert.Equal(t, handler.ErrMissingGroupID, err)
+		assert.Nil(t, rsp.Conversations)
+	})
+
+	t.Run("Valid", func(t *testing.T) {
+		var rsp pb.ListConversationsResponse
+		err := h.ListConversations(context.TODO(), &pb.ListConversationsRequest{
+			GroupId: cRsp1.Conversation.GroupId,
+		}, &rsp)
+
+		assert.NoError(t, err)
+		if len(rsp.Conversations) != 1 {
+			t.Fatalf("Expected 1 conversation to be returned, got %v", len(rsp.Conversations))
+			return
+		}
+
+		assertConversationsMatch(t, cRsp1.Conversation, rsp.Conversations[0])
+	})
+}