Disable t.Parallel with env vars in the auto instrumentation

autoinstrument/init.go

@@ -8,6 +8,7 @@ import (
 	"github.com/undefinedlabs/go-mpatch"
 
 	"go.undefinedlabs.com/scopeagent"
+	"go.undefinedlabs.com/scopeagent/env"
 	"go.undefinedlabs.com/scopeagent/instrumentation"
 	scopetesting "go.undefinedlabs.com/scopeagent/instrumentation/testing"
 )
@@ -38,6 +39,18 @@ func init() {
 			return scopeagent.Run(m)
 		})
 		logOnError(err)
+
+		if !env.ScopeTestingDisableParallel.Value {
+			return
+		}
+		var t *testing.T
+		var tParallelMethod reflect.Method
+		tType := reflect.TypeOf(t)
+		if tParallelMethod, ok = tType.MethodByName("Parallel"); !ok {
+			return
+		}
+		_, err = mpatch.PatchMethodByReflect(tParallelMethod, func(t *testing.T) {})
+		logOnError(err)
 	})
 }
 

env/vars.go

@@ -17,6 +17,7 @@ var (
 	ScopeTestingMode                      = newBooleanEnvVar(false, "SCOPE_TESTING_MODE")
 	ScopeTestingFailRetries               = newIntEnvVar(0, "SCOPE_TESTING_FAIL_RETRIES")
 	ScopeTestingPanicAsFail               = newBooleanEnvVar(false, "SCOPE_TESTING_PANIC_AS_FAIL")
+	ScopeTestingDisableParallel           = newBooleanEnvVar(false, "SCOPE_TESTING_DISABLE_PARALLEL")
 	ScopeConfiguration                    = newSliceEnvVar([]string{tags.PlatformName, tags.PlatformArchitecture, tags.GoVersion}, "SCOPE_CONFIGURATION")
 	ScopeMetadata                         = newMapEnvVar(nil, "SCOPE_METADATA")
 	ScopeInstrumentationHttpPayloads      = newBooleanEnvVar(false, "SCOPE_INSTRUMENTATION_HTTP_PAYLOADS")