Streams (#47)

* Streams Service (WIP)

* Complete Streams Service

streams/handler/create_message_test.go

@@ -0,0 +1,89 @@
+package handler_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/micro/services/streams/handler"
+	pb "github.com/micro/services/streams/proto"
+	"google.golang.org/protobuf/types/known/timestamppb"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCreateMessage(t *testing.T) {
+	h := testHandler(t)
+
+	// seed some data
+	var cRsp pb.CreateConversationResponse
+	err := h.CreateConversation(context.TODO(), &pb.CreateConversationRequest{
+		Topic: "HelloWorld", GroupId: uuid.New().String(),
+	}, &cRsp)
+	if err != nil {
+		t.Fatalf("Error creating conversation: %v", err)
+		return
+	}
+
+	tt := []struct {
+		Name           string
+		AuthorID       string
+		ConversationID string
+		Text           string
+		Error          error
+	}{
+		{
+			Name:     "MissingConversationID",
+			Text:     "HelloWorld",
+			AuthorID: uuid.New().String(),
+			Error:    handler.ErrMissingConversationID,
+		},
+		{
+			Name:           "MissingAuthorID",
+			ConversationID: uuid.New().String(),
+			Text:           "HelloWorld",
+			Error:          handler.ErrMissingAuthorID,
+		},
+		{
+			Name:           "MissingText",
+			ConversationID: uuid.New().String(),
+			AuthorID:       uuid.New().String(),
+			Error:          handler.ErrMissingText,
+		},
+		{
+			Name:           "ConversationNotFound",
+			ConversationID: uuid.New().String(),
+			AuthorID:       uuid.New().String(),
+			Text:           "HelloWorld",
+			Error:          handler.ErrNotFound,
+		},
+		{
+			Name:           "Valid",
+			ConversationID: cRsp.Conversation.Id,
+			AuthorID:       uuid.New().String(),
+			Text:           "HelloWorld",
+		},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.Name, func(t *testing.T) {
+			var rsp pb.CreateMessageResponse
+			err := h.CreateMessage(context.TODO(), &pb.CreateMessageRequest{
+				Text: tc.Text, ConversationId: tc.ConversationID, AuthorId: tc.AuthorID,
+			}, &rsp)
+
+			assert.Equal(t, tc.Error, err)
+			if tc.Error != nil {
+				assert.Nil(t, rsp.Message)
+				return
+			}
+
+			assertMessagesMatch(t, &pb.Message{
+				AuthorId:       tc.AuthorID,
+				ConversationId: tc.ConversationID,
+				SentAt:         timestamppb.New(h.Time()),
+				Text:           tc.Text,
+			}, rsp.Message)
+		})
+	}
+}