[DSB Social Network] Getting Errors When Executing Tests for DSB_SN

[ibraheemalsaghier]

When running the DSB social network I fail all of the tests. I am able to run the tests for all the other examples successfully. What could the issue be?

(goenv) user2:~/blueprint/examples/dsb_sn/tests$ go test

2024/06/09 11:56:05 Looking for user IDs in the database
2024/06/09 11:56:05
2024/06/09 11:56:35 server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
--- FAIL: TestComposePost (30.03s)
composepostservice_test.go:73:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/composepostservice_test.go:73
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestComposePost
--- FAIL: TestWriteHomeTimeline (0.00s)
hometimelineservice_test.go:68: CHecking hometimeline for 2
hometimelineservice_test.go:74:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/hometimelineservice_test.go:74
Error: "[{36874939883261200 1717934165268} {1 1717934195273645493}]" should have 1 item(s), but has 2
Test: TestWriteHomeTimeline
hometimelineservice_test.go:214: cleanup hometimeline ids: [2 1 3 5]
2024/06/09 11:56:35 Looking for user IDs in the database
2024/06/09 11:56:35 830 18ffcdb825 0
2024/06/09 11:56:35 Looking for user IDs in the database
--- FAIL: TestWriteUserTimeline (60.00s)
usertimelineservice_test.go:78:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:78
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestWriteUserTimeline
usertimelineservice_test.go:157:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:157
/home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:69
/home/saghieim/miniforge3/envs/goenv/go/src/runtime/panic.go:626
/home/saghieim/miniforge3/envs/goenv/go/src/testing/testing.go:1005
/home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:78
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestWriteUserTimeline
--- FAIL: TestReadUserTimeline (60.00s)
usertimelineservice_test.go:122:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:122
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestReadUserTimeline
usertimelineservice_test.go:157:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:157
/home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:114
/home/saghieim/miniforge3/envs/goenv/go/src/runtime/panic.go:626
/home/saghieim/miniforge3/envs/goenv/go/src/testing/testing.go:1005
/home/saghieim/blueprint/examples/dsb_sn/tests/usertimelineservice_test.go:122
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestReadUserTimeline
2024/06/09 11:58:35 INFO ServiceRegistry "wrk2api_service" building client "local"
2024/06/09 11:58:35 830 18ffcdd572 0
2024/06/09 11:58:35
2024/06/09 11:59:05 server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
2024/06/09 11:59:05 Cleaning up database
--- FAIL: TestWrk2Compose (60.01s)
wrk2apiservice_test.go:271:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/wrk2apiservice_test.go:271
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestWrk2Compose
wrk2apiservice_test.go:303:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/wrk2apiservice_test.go:303
/home/saghieim/blueprint/examples/dsb_sn/tests/wrk2apiservice_test.go:229
/home/saghieim/miniforge3/envs/goenv/go/src/runtime/panic.go:626
/home/saghieim/miniforge3/envs/goenv/go/src/testing/testing.go:1005
/home/saghieim/blueprint/examples/dsb_sn/tests/wrk2apiservice_test.go:271
Error: Received unexpected error:
server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: dial tcp [::1]:27017: connect: connection refused }, ] }
Test: TestWrk2Compose
--- FAIL: TestWrk2ReadTimelines (0.00s)
wrk2apiservice_test.go:315:
Error Trace: /home/saghieim/blueprint/examples/dsb_sn/tests/wrk2apiservice_test.go:315
Error: Received unexpected error:
Username already registered
Test: TestWrk2ReadTimelines
FAIL
exit status 1
FAIL github.com/blueprint-uservices/blueprint/examples/dsb_sn/tests 210.111s

[vaastav]

The social network tests are currently unit tests (and not blueprint-style full end-to-end tests). This means that to run them correctly, they need an external mongodb server running at localhost:27017. The tests can't seem to find it which is why you get these errors.
The tests are something that we are currently changing in one of the other dev branches so expect an update soon.

[777lefty]

Ran into the same propblem

[vaastav]

@777lefty did you try running the tests with an external monogdb server running? As I mentioned in my previous comment, the DSB-SN tests are not Blueprint-style full end-to-end tests. They are instead unit tests.

[777lefty]

It's really weird, it seems that at first the example go run test command given in the README.md doesn't have all the arguments needed, and after I provided all the address arguments in the command, I didn't run into that connection refused error anymore, but the current error seems more likely to be a problem with the services:

--- FAIL: TestComposePost (0.01s)
    composepostservice_test.go:98: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/composepostservice_test.go:98
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/composepostservice_test.go:62
        	Error:      	Received unexpected error:
        	            	Response object is nil
        	Test:       	TestComposePost

--- FAIL: TestWriteHomeTimeline (0.03s)
    hometimelineservice_test.go:68: CHecking hometimeline for 2
    hometimelineservice_test.go:73: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:73
        	Error:      	Should be true
        	Test:       	TestWriteHomeTimeline
    hometimelineservice_test.go:214: cleanup hometimeline ids: [2 1 3 5]
    hometimelineservice_test.go:220: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:220
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:60
        	            				/usr/local/go/src/runtime/panic.go:615
        	            				/usr/local/go/src/testing/testing.go:1013
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:73
        	Error:      	Received unexpected error:
        	            	memcache: cache miss
        	Test:       	TestWriteHomeTimeline
--- FAIL: TestReadHomeTimeline (0.03s)
    hometimelineservice_test.go:153: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:153
        	Error:      	"[1 1 2]" should have 2 item(s), but has 3
        	Test:       	TestReadHomeTimeline
    hometimelineservice_test.go:214: cleanup hometimeline ids: [2 1 3 5]
    hometimelineservice_test.go:220: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:220
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:131
        	            				/usr/local/go/src/runtime/panic.go:615
        	            				/usr/local/go/src/testing/testing.go:1013
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:153
        	Error:      	Received unexpected error:
        	            	memcache: cache miss
        	Test:       	TestReadHomeTimeline

--- FAIL: TestFollow (0.00s)
    socialgraphservice_test.go:103: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/socialgraphservice_test.go:103
        	Error:      	Should be true
        	Test:       	TestFollow
2025/08/15 16:35:03 INFO ServiceRegistry "user_db" building client "post_db"
2025/08/15 16:35:03 INFO tests built post_db.dial_addr (string) = localhost:12350
2025/08/15 16:35:03 INFO tests built post_db.client (*mongodb.MongoDB)
--- FAIL: TestFollowUsername (0.02s)
    socialgraphservice_test.go:208: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/socialgraphservice_test.go:208
        	Error:      	Received unexpected error:
        	            	Response object is nil
        	Test:       	TestFollowUsername
--- FAIL: TestGetFollowers (0.00s)
    socialgraphservice_test.go:313: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/socialgraphservice_test.go:313
        	Error:      	"[2 1 2 1]" should have 0 item(s), but has 4
        	Test:       	TestGetFollowers
--- FAIL: TestGetFollowees (0.00s)
    socialgraphservice_test.go:369: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/socialgraphservice_test.go:369
        	Error:      	"[2]" should have 0 item(s), but has 1
        	Test:       	TestGetFollowees
--- FAIL: TestUnfollow (0.01s)
    socialgraphservice_test.go:437: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/socialgraphservice_test.go:437
        	Error:      	Should be true
        	Test:       	TestUnfollow

--- FAIL: TestGetUserID (0.00s)
    useridservice_test.go:46: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/useridservice_test.go:46
        	Error:      	Not equal: 
        	            	expected: -1
        	            	actual  : 0
        	Test:       	TestGetUserID

--- FAIL: TestComposeUserMentionsCache (0.01s)
    usermentionservice_test.go:53: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/usermentionservice_test.go:53
        	Error:      	Not equal: 
        	            	expected: 5
        	            	actual  : 2
        	Test:       	TestComposeUserMentionsCache
--- FAIL: TestComposeUserMentionsNoCache (0.00s)
    usermentionservice_test.go:86: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/usermentionservice_test.go:86
        	Error:      	Not equal: 
        	            	expected: 5
        	            	actual  : 2
        	Test:       	TestComposeUserMentionsNoCache
--- FAIL: TestRegisterUserWithId (0.00s)
    userservice_test.go:101: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/userservice_test.go:101
        	Error:      	"[{5 Vaastav Anand vaastav  } {2 Jonathan Mace jcmace  } {1 Antoine Kaufmann antoinek  } {3 Deepak Garg dg  }]" should have 0 item(s), but has 4
        	Test:       	TestRegisterUserWithId
--- FAIL: TestLogin (0.00s)
    userservice_test.go:169: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/userservice_test.go:169
        	Error:      	"[{5 Vaastav Anand vaastav  } {2 Jonathan Mace jcmace  } {1 Antoine Kaufmann antoinek  } {3 Deepak Garg dg  }]" should have 0 item(s), but has 4
        	Test:       	TestLogin
--- FAIL: TestRegisterUser (0.00s)
    userservice_test.go:220: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/userservice_test.go:220
        	Error:      	"[{5 Vaastav Anand vaastav  } {2 Jonathan Mace jcmace  } {1 Antoine Kaufmann antoinek  } {3 Deepak Garg dg  }]" should have 0 item(s), but has 4
        	Test:       	TestRegisterUser
--- FAIL: TestComposeCreatorWithUsername (0.00s)
    userservice_test.go:291: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/userservice_test.go:291
        	Error:      	Received unexpected error:
        	            	Response object is nil
        	Test:       	TestComposeCreatorWithUsername

--- FAIL: TestWriteUserTimeline (0.04s)
    usertimelineservice_test.go:86: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/usertimelineservice_test.go:86
        	Error:      	Should be true
        	Test:       	TestWriteUserTimeline
--- FAIL: TestReadUserTimeline (0.03s)
    usertimelineservice_test.go:137: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/usertimelineservice_test.go:137
        	Error:      	"[1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10]" should have 10 item(s), but has 20
        	Test:       	TestReadUserTimeline

--- FAIL: TestRegister (0.01s)
    wrk2apiservice_test.go:69: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:69
        	Error:      	Received unexpected error:
        	            	StatusCode was 500
        	Test:       	TestRegister
--- FAIL: TestWrk2Follow (0.00s)
    wrk2apiservice_test.go:105: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:105
        	Error:      	Received unexpected error:
        	            	StatusCode was 500
        	Test:       	TestWrk2Follow
--- FAIL: TestWrk2Unfollow (0.00s)
    wrk2apiservice_test.go:160: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:160
        	Error:      	Received unexpected error:
        	            	StatusCode was 500
        	Test:       	TestWrk2Unfollow
2025/08/15 16:35:03 Cleaning up database
--- FAIL: TestWrk2Compose (0.00s)
    wrk2apiservice_test.go:242: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:242
        	Error:      	Received unexpected error:
        	            	StatusCode was 500
        	Test:       	TestWrk2Compose
    hometimelineservice_test.go:214: cleanup hometimeline ids: [5 2 1 3]
    hometimelineservice_test.go:220: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/hometimelineservice_test.go:220
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:235
        	            				/usr/local/go/src/runtime/panic.go:615
        	            				/usr/local/go/src/testing/testing.go:1013
        	            				/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:242
        	Error:      	Received unexpected error:
        	            	memcache: cache miss
        	Test:       	TestWrk2Compose
--- FAIL: TestWrk2ReadTimelines (0.00s)
    wrk2apiservice_test.go:315: 
        	Error Trace:	/home/lefty777/xlab/blueprint/examples/dsb_sn/build/gotests/tests/wrk2apiservice_test.go:315
        	Error:      	Received unexpected error:
        	            	StatusCode was 500
        	Test:       	TestWrk2ReadTimelines
FAIL
exit status 1
FAIL	github.com/blueprint-uservices/blueprint/examples/dsb_sn/tests	0.284s

But I didn't encounter any errors when executing go run wiring/main.go and docker compose up. I deleted and re-compiled dsb_sn over and over again but the error still shows up

[777lefty]

The local unit tests were passed after running mongodb server at localhost:27017, but the complied application test keeps running into the error above

[vaastav]

Ahh I see the confusion now. The tests in DSB-SN are unit-tests (so they will only work as unit tests). Those tests are not designed to be run as black-box tests post compilation iirc. These tests are different than the tests for Sockshop and HotelReservation.

[777lefty]

So that means there aren't tests for compiled dsb_sn?

[vaastav]

At the moment, no. This is an open todo list item that I haven't gotten around to implementing yet for SocialNetwork and TrainTicket. (I think TrainTicket also is in a WIP PR for now).

Is this something you need for a project? I can try implementing it after my current deadline.

Pull Requests are always welcome :)

[777lefty]

Thanks for the information! Actually, we're exploring how we can leverage blueprint in our project, so I was just playing with it first to get familiar with it. The error made me think there is something wrong with my configurations so I tried to figure it out

[777lefty]

Besides, I noticed that there aren't workload generators for dsb_sn, leaf, and train_ticket?