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0

From what I've seen, Fabric doesn't support testing private data collections with MockStub. What I've tried to do below is workaround the lack of a transient field on MockStub by embedding MockStub within another struct.

The problem is that in the chaincode, while I can extract the transient data (stub.GetTransient()), I cannot access the needed field of my map.

Here's my struct:

type MockStubWithTransient struct 
 shim.MockStub
 transient map[string]interface

The test:

func TestCreatePOI (t *testing.T) 
 fmt.Println("Entering TestCreatePOI")
 stub := NewMockStubWithTransient(""poi":"status":"unconfirmed","id":"123"")
 fmt.Println(stub)
 // prints: &[] 0x158ffc0 mockStub map[] 0xc00014e960 map[] <nil> <nil> map[] map[] 0xc0000467e0 map[] map[poi:map[status:unconfirmed id:123]]
 // can access stub.transient["poi"]

 result := stub.MockInvoke("001",[][]byte[]byte("CreatePOI"))
 fmt.Println(result)


func NewMockStubWithTransient(transient string) *MockStubWithTransient 
 var tMap map[string]interface
 _ := json.Unmarshal([]byte(transient), &tMap)
 s := shim.NewMockStub("mockStub", new(POIChaincode))
 st := &MockStubWithTransient
 transient: tMap,
 MockStub: *s,
 

 return st

When I print the stub as my chaincode sees it, I get:

&[[67 114 101 97 116 101 80 114 111 111 102 79 102 73 110 115 117 114 97 110 99 101]] 0x158ffc0 mockStub map[] 0xc00014e960 map[] 001 seconds:1551988379 nanos:68249460 0xc0000c6190 map[] map[] 0xc0000467e0 map[]

And I can call stub.GetTransient() but what I get is map[].

How can I populate and access the transient field of stub when stub originates in a test?

I'm not set on this method of doing things, I just need a way to unit test my chaincode that utilizes private data collections. Thank you!

go hyperledger-fabric hyperledger-chaincode

share|improve this question

edited Mar 11 at 17:11

BillD

asked Mar 7 at 20:13

BillDBillD

33

add a comment | 

0

From what I've seen, Fabric doesn't support testing private data collections with MockStub. What I've tried to do below is workaround the lack of a transient field on MockStub by embedding MockStub within another struct.

The problem is that in the chaincode, while I can extract the transient data (stub.GetTransient()), I cannot access the needed field of my map.

Here's my struct:

type MockStubWithTransient struct 
 shim.MockStub
 transient map[string]interface

The test:

func TestCreatePOI (t *testing.T) 
 fmt.Println("Entering TestCreatePOI")
 stub := NewMockStubWithTransient(""poi":"status":"unconfirmed","id":"123"")
 fmt.Println(stub)
 // prints: &[] 0x158ffc0 mockStub map[] 0xc00014e960 map[] <nil> <nil> map[] map[] 0xc0000467e0 map[] map[poi:map[status:unconfirmed id:123]]
 // can access stub.transient["poi"]

 result := stub.MockInvoke("001",[][]byte[]byte("CreatePOI"))
 fmt.Println(result)


func NewMockStubWithTransient(transient string) *MockStubWithTransient 
 var tMap map[string]interface
 _ := json.Unmarshal([]byte(transient), &tMap)
 s := shim.NewMockStub("mockStub", new(POIChaincode))
 st := &MockStubWithTransient
 transient: tMap,
 MockStub: *s,
 

 return st

When I print the stub as my chaincode sees it, I get:

&[[67 114 101 97 116 101 80 114 111 111 102 79 102 73 110 115 117 114 97 110 99 101]] 0x158ffc0 mockStub map[] 0xc00014e960 map[] 001 seconds:1551988379 nanos:68249460 0xc0000c6190 map[] map[] 0xc0000467e0 map[]

And I can call stub.GetTransient() but what I get is map[].

How can I populate and access the transient field of stub when stub originates in a test?

I'm not set on this method of doing things, I just need a way to unit test my chaincode that utilizes private data collections. Thank you!

go hyperledger-fabric hyperledger-chaincode

share|improve this question

edited Mar 11 at 17:11

BillD

asked Mar 7 at 20:13

BillDBillD

33

add a comment | 

From what I've seen, Fabric doesn't support testing private data collections with MockStub. What I've tried to do below is workaround the lack of a transient field on MockStub by embedding MockStub within another struct.

The problem is that in the chaincode, while I can extract the transient data (stub.GetTransient()), I cannot access the needed field of my map.

Here's my struct:

type MockStubWithTransient struct 
 shim.MockStub
 transient map[string]interface

The test:

func TestCreatePOI (t *testing.T) 
 fmt.Println("Entering TestCreatePOI")
 stub := NewMockStubWithTransient(""poi":"status":"unconfirmed","id":"123"")
 fmt.Println(stub)
 // prints: &[] 0x158ffc0 mockStub map[] 0xc00014e960 map[] <nil> <nil> map[] map[] 0xc0000467e0 map[] map[poi:map[status:unconfirmed id:123]]
 // can access stub.transient["poi"]

 result := stub.MockInvoke("001",[][]byte[]byte("CreatePOI"))
 fmt.Println(result)


func NewMockStubWithTransient(transient string) *MockStubWithTransient 
 var tMap map[string]interface
 _ := json.Unmarshal([]byte(transient), &tMap)
 s := shim.NewMockStub("mockStub", new(POIChaincode))
 st := &MockStubWithTransient
 transient: tMap,
 MockStub: *s,
 

 return st

When I print the stub as my chaincode sees it, I get:

&[[67 114 101 97 116 101 80 114 111 111 102 79 102 73 110 115 117 114 97 110 99 101]] 0x158ffc0 mockStub map[] 0xc00014e960 map[] 001 seconds:1551988379 nanos:68249460 0xc0000c6190 map[] map[] 0xc0000467e0 map[]

And I can call stub.GetTransient() but what I get is map[].

How can I populate and access the transient field of stub when stub originates in a test?

I'm not set on this method of doing things, I just need a way to unit test my chaincode that utilizes private data collections. Thank you!

go hyperledger-fabric hyperledger-chaincode

share|improve this question

edited Mar 11 at 17:11

BillD

asked Mar 7 at 20:13

BillDBillD

33

type MockStubWithTransient struct 
 shim.MockStub
 transient map[string]interface

func TestCreatePOI (t *testing.T) 
 fmt.Println("Entering TestCreatePOI")
 stub := NewMockStubWithTransient(""poi":"status":"unconfirmed","id":"123"")
 fmt.Println(stub)
 // prints: &[] 0x158ffc0 mockStub map[] 0xc00014e960 map[] <nil> <nil> map[] map[] 0xc0000467e0 map[] map[poi:map[status:unconfirmed id:123]]
 // can access stub.transient["poi"]

 result := stub.MockInvoke("001",[][]byte[]byte("CreatePOI"))
 fmt.Println(result)


func NewMockStubWithTransient(transient string) *MockStubWithTransient 
 var tMap map[string]interface
 _ := json.Unmarshal([]byte(transient), &tMap)
 s := shim.NewMockStub("mockStub", new(POIChaincode))
 st := &MockStubWithTransient
 transient: tMap,
 MockStub: *s,
 

 return st

&[[67 114 101 97 116 101 80 114 111 111 102 79 102 73 110 115 117 114 97 110 99 101]] 0x158ffc0 mockStub map[] 0xc00014e960 map[] 001 seconds:1551988379 nanos:68249460 0xc0000c6190 map[] map[] 0xc0000467e0 map[]

share|improve this question

edited Mar 11 at 17:11

BillD

asked Mar 7 at 20:13

BillDBillD

33

share|improve this question

edited Mar 11 at 17:11

BillD

asked Mar 7 at 20:13

BillDBillD

33

asked Mar 7 at 20:13

BillDBillD

33

asked Mar 7 at 20:13

BillDBillD

33