Getting `Caught error: runtime error: invalid memory address or nil pointer dereference` trying to import basic OpenAPI spec

[ljwall]

This tool looks really cool! Unsure if this is a bug or I'm doing something wrong, but I'm unable to sync a basic OpenAPI spec file

Process

On Ubuntu 20.04:

wget https://github.com/danielgtaylor/restish/releases/download/v0.20.0/restish-0.20.0-linux-amd64.tar.gz
tar xfv restish-0.20.0-linux-amd64.tar.gz
./restish api edit

Update config to

  {                                                                                  
    "$schema": "https://rest.sh/schemas/apis.json",                                  
    "myip": {                                                                        
      "base": "https://api.ipify.org/",                                              
      "spec_files": ["/home/liam/myip.yaml"]                                         
    }                                                                                
  } 

create file /home/liam/myip.yaml with

openapi: 3.1.0
info:
  title: My IP
  version: 0.0.1
paths:
  /:
    get:
      summary: Get your own IP
      operationId: getMyIP

Finally run: ./restish -v api sync myip

Result

DEBUG: Configuration: map[app-name:restish cache-dir:/home/liam/.cache/restish color:true config-directory:/home/liam/.config/restish home-directory:/home/liam rsh-ca-cert: rsh-client-cert: rsh-client-key: rsh-filter: rsh-header:[] rsh-ignore-status-code:false rsh-insecure:false rsh-no-cache:false rsh-no-paginate:false rsh-output-format:auto rsh-profile:default rsh-query:[] rsh-raw:false rsh-retry:2 rsh-server: rsh-timeout:0s rsh-verbose:true server-index:0 tty:true]
DEBUG: API loading took 8.76647ms
ERROR: Caught error: runtime error: invalid memory address or nil pointer dereference
DEBUG: goroutine 1 [running]:
runtime/debug.Stack()
	/opt/hostedtoolcache/go/1.18.10/x64/src/runtime/debug/stack.go:24 +0x65
github.com/danielgtaylor/restish/cli.Run.func1()
	/home/runner/work/restish/restish/cli/cli.go:849 +0x71
panic({0xf3aa20, 0x19a91e0})
	/opt/hostedtoolcache/go/1.18.10/x64/src/runtime/panic.go:838 +0x207
github.com/danielgtaylor/restish/openapi.openapiOperation(_, {_, _}, _, _, _)
	/home/runner/work/restish/restish/openapi/openapi.go:416 +0x1d5b
github.com/danielgtaylor/restish/openapi.loadOpenAPI3({0x12f4f58, 0xc00047c0b0}, 0x107f312f406458?, 0xc00018ce10, 0x7f315609c108?)
	/home/runner/work/restish/restish/openapi/openapi.go:618 +0x15d2
github.com/danielgtaylor/restish/openapi.(*loader).Load(_, {{0xc00074a660, 0x5}, {0x0, 0x0}, 0x0, {0xc00074a668, 0xd}, {0xc00074a675, 0x1}, ...}, ...)
	/home/runner/work/restish/restish/openapi/openapi.go:803 +0x1b1
github.com/danielgtaylor/restish/cli.load(_, {{0xc00074a660, 0x5}, {0x0, 0x0}, 0x0, {0xc00074a668, 0xd}, {0xc00074a675, 0x1}, ...}, ...)
	/home/runner/work/restish/restish/cli/api.go:81 +0xe2
github.com/danielgtaylor/restish/cli.Load({0xc00074a660, 0x16}, 0xc00074c300)
	/home/runner/work/restish/restish/cli/api.go:180 +0x1aab
github.com/danielgtaylor/restish/cli.initAPIConfig.func5(0xc000018000?, {0xc000741a60, 0x1, 0x2?})
	/home/runner/work/restish/restish/cli/apiconfig.go:221 +0x8a
github.com/spf13/cobra.(*Command).execute(0xc000018000, {0xc000741a40, 0x2, 0x2})
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:920 +0x847
github.com/spf13/cobra.(*Command).ExecuteC(0xc00074c300)
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:1044 +0x3bc
github.com/spf13/cobra.(*Command).Execute(...)
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:968
github.com/danielgtaylor/restish/cli.Run()
	/home/runner/work/restish/restish/cli/cli.go:857 +0x818
main.main()
	/home/runner/work/restish/restish/main.go:40 +0x23a

[ljwall]

Digging some more, if I update myip.yaml to include a responses block as follows:

openapi: 3.1.0
info:
  title: My IP
  version: 0.0.1
paths:
  /:
    get:
      summary: Get your own IP
      operationId: getMyIP
      responses:
        "200":
          description: text body containing your IP address

then it all works.

I don't think (based on https://swagger.io/specification/#operation-object) that the responses block should be required?