Fix output file path

Author: bozaro

assert/assertions.go

@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"math"
 	"os"
-	"path/filepath"
 	"reflect"
 	"regexp"
 	"runtime"
@@ -107,21 +106,21 @@ func CallerInfo() []string {
 
 	var pc uintptr
 	var ok bool
-	var file string
+	var path string
 	var line int
 	var name string
 
 	callers := []string{}
 	for i := 0; ; i++ {
-		pc, file, line, ok = runtime.Caller(i)
+		pc, path, line, ok = runtime.Caller(i)
 		if !ok {
 			// The breaks below failed to terminate the loop, and we ran off the
 			// end of the call stack.
 			break
 		}
 
 		// This is a huge edge case, but it will panic if this is the case, see #180
-		if file == "<autogenerated>" {
+		if path == "<autogenerated>" {
 			break
 		}
 
@@ -140,12 +139,11 @@ func CallerInfo() []string {
 			break
 		}
 
-		parts := strings.Split(file, "/")
-		file = parts[len(parts)-1]
+		parts := strings.Split(path, "/")
+		file := parts[len(parts)-1]
 		if len(parts) > 1 {
 			dir := parts[len(parts)-2]
 			if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
-				path, _ := filepath.Abs(file)
 				callers = append(callers, fmt.Sprintf("%s:%d", path, line))
 			}
 		}