Improve Sempahore CI (#481)

Improve Sempahore CI build

.semaphore/semaphore.yml

@@ -1,21 +1,35 @@
-version: v1.0
-name: Go
-agent:
-  machine:
-    type: e1-standard-2
-    os_image: ubuntu2004
-blocks:
-  - name: Test
-    task:
-      jobs:
-        - name: go test
-          commands:
-            - sem-version go 1.17
-            - export GO111MODULE=on
-            - export GOPATH=~/go
-            - 'export PATH=/home/semaphore/go/bin:$PATH'
-            - checkout
-            - go version
-            - go get ./...
-            - go test ./...
-            - go build -v .
+version: v1.0
+name: Go
+agent:
+  machine:
+    type: e1-standard-2
+    os_image: ubuntu2004
+blocks:
+  - name: Style Check
+    task:
+      jobs:
+        - name: fmt
+          commands:
+            - sem-version go 1.17
+            - checkout
+            - ./scripts/golangci_install.sh -b $(go env GOPATH)/bin v1.42.1
+            - export PATH=$(go env GOPATH)/bin:$PATH
+            - golangci-lint run ./...
+
+  - name: Test & Build
+    task:
+      prologue:
+        commands:
+          - sem-version go 1.17
+          - export PATH=$(go env GOPATH)/bin:$PATH
+          - checkout
+          - go version
+
+      jobs:
+        - name: Test
+          commands:
+            - go test ./...
+
+        - name: Build
+          commands:
+            - go build -v .

graphql.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"reflect"
 	"time"
 
 	"github.com/graph-gophers/graphql-go/errors"
@@ -197,7 +196,7 @@ func (s *Schema) ValidateWithVariables(queryString string, variables map[string]
 // without a resolver. If the context get cancelled, no further resolvers will be called and a
 // the context error will be returned as soon as possible (not immediately).
 func (s *Schema) Exec(ctx context.Context, queryString string, operationName string, variables map[string]interface{}) *Response {
-	if s.res.Resolver == (reflect.Value{}) {
+	if !s.res.Resolver.IsValid() {
 		panic("schema created without resolver, can not exec")
 	}
 	return s.exec(ctx, queryString, operationName, variables, s.res)

internal/exec/subscribe.go

@@ -82,7 +82,7 @@ func (r *Request) Subscribe(ctx context.Context, s *resolvable.Schema, op *types
 
 	c := make(chan *Response)
 	// TODO: handle resolver nil channel better?
-	if result == reflect.Zero(result.Type()) {
+	if result.IsZero() {
 		close(c)
 		return c
 	}

internal/schema/schema_test.go

@@ -995,13 +995,13 @@ func TestInterfaceImplementsInterface(t *testing.T) {
 				if tt.validateError == nil {
 					t.Fatal(err)
 				}
-				if err := tt.validateError(err); err != nil {
-					t.Fatal(err)
+				if err2 := tt.validateError(err); err2 != nil {
+					t.Fatal(err2)
 				}
 			}
 			if tt.validateSchema != nil {
-				if err := tt.validateSchema(s); err != nil {
-					t.Fatal(err)
+				if err2 := tt.validateSchema(s); err2 != nil {
+					t.Fatal(err2)
 				}
 			}
 		})