Streams (#47)

* Streams Service (WIP)

* Complete Streams Service

streams/handler/read_conversation_test.go

@@ -0,0 +1,70 @@
+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"
+	"google.golang.org/protobuf/types/known/wrapperspb"
+)
+
+func TestReadConversation(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
+		ID      string
+		GroupID *wrapperspb.StringValue
+		Error   error
+		Result  *pb.Conversation
+	}{
+		{
+			Name:  "MissingID",
+			Error: handler.ErrMissingID,
+		},
+		{
+			Name:  "IncorrectID",
+			ID:    uuid.New().String(),
+			Error: handler.ErrNotFound,
+		},
+		{
+			Name:   "FoundUsingIDOnly",
+			ID:     cRsp.Conversation.Id,
+			Result: cRsp.Conversation,
+		},
+		{
+			Name:    "IncorrectGroupID",
+			ID:      cRsp.Conversation.Id,
+			Error:   handler.ErrNotFound,
+			GroupID: &wrapperspb.StringValue{Value: uuid.New().String()},
+		},
+	}
+	for _, tc := range tt {
+		t.Run(tc.Name, func(t *testing.T) {
+			var rsp pb.ReadConversationResponse
+			err := h.ReadConversation(context.TODO(), &pb.ReadConversationRequest{
+				Id: tc.ID, GroupId: tc.GroupID,
+			}, &rsp)
+			assert.Equal(t, tc.Error, err)
+
+			if tc.Result == nil {
+				assert.Nil(t, rsp.Conversation)
+			} else {
+				assertConversationsMatch(t, tc.Result, rsp.Conversation)
+			}
+		})
+	}
+}