simplify testing

tools/build/env_test.go

@@ -3,12 +3,11 @@ package main
 import (
 	"testing"
 
-	v2testing "github.com/v2ray/v2ray-core/testing"
 	"github.com/v2ray/v2ray-core/testing/assert"
 )
 
 func TestParseOS(t *testing.T) {
-	v2testing.Current(t)
+	assert := assert.On(t)
 
 	assert.Pointer(parseOS("windows")).Equals(Windows)
 	assert.Pointer(parseOS("macos")).Equals(MacOS)
@@ -17,7 +16,7 @@ func TestParseOS(t *testing.T) {
 }
 
 func TestParseArch(t *testing.T) {
-	v2testing.Current(t)
+	assert := assert.On(t)
 
 	assert.Pointer(parseArch("x86")).Equals(X86)
 	assert.Pointer(parseArch("x64")).Equals(Amd64)