add trace to expect calls

Author: rioam2

util_test.go

@@ -1,23 +1,29 @@
 package aep
 
-import "testing"
+import (
+	"runtime"
+	"strings"
+	"testing"
+)
 
 func expect(t *testing.T, values ...interface{}) {
+	_, path, line, _ := runtime.Caller(1)
+	file := strings.Split(path, "/")[len(strings.Split(path, "/"))-1]
 	if len(values) >= 1 {
 		if res, ok := values[0].(bool); ok {
 			if !res {
 				if len(values) > 1 {
 					t.Fatal(values[1])
 				} else {
-					t.Fatalf("Expected true value\n")
+					t.Fatalf("(%s:%d) Expected true value\n", file, line)
 				}
 			}
 		} else {
 			if values[0] != values[1] {
 				if len(values) > 2 {
 					t.Fatal(values[2])
 				} else {
-					t.Fatalf("Expected %+v to equal %+v\n", values[0], values[1])
+					t.Fatalf("(%s:%d) Expected \"%+v\" to equal \"%+v\"\n", file, line, values[0], values[1])
 				}
 			}
 		}