Update join_test.go

Author: asmyasnikov

internal/xerrors/join_test.go

@@ -10,35 +10,45 @@ import (
 
 func TestJoin(t *testing.T) {
 	for _, tt := range []struct {
-		err *joinError
-		iss []error
-		ass []interface{}
-		s   string
+		join error
+		iss  []error
+		ass  []interface{}
+		s    string
 	}{
 		{
-			err: Join(context.Canceled),
-			iss: []error{context.Canceled},
-			ass: nil,
-			s:   "[\"context canceled\"]",
+			join: Join(context.Canceled),
+			iss:  []error{context.Canceled},
+			ass:  nil,
+			s:    "context canceled",
 		},
 		{
-			err: Join(context.Canceled, context.DeadlineExceeded, Operation()),
-			iss: []error{context.Canceled, context.DeadlineExceeded},
+			join: Join(context.Canceled, context.DeadlineExceeded, Operation()),
+			iss:  []error{context.Canceled, context.DeadlineExceeded},
 			ass: []interface{}{func() interface{} {
 				var i isYdbError
 
 				return &i
 			}()},
 			s: "[\"context canceled\",\"context deadline exceeded\",\"operation/STATUS_CODE_UNSPECIFIED (code = 0)\"]",
 		},
+		{
+			join: Join(context.Canceled, context.DeadlineExceeded, nil),
+			iss:  []error{context.Canceled, context.DeadlineExceeded},
+			s:    "[\"context canceled\",\"context deadline exceeded\"]",
+		},
+		{
+			join: Join(nil, context.DeadlineExceeded, nil),
+			iss:  []error{context.DeadlineExceeded},
+			s:    "context deadline exceeded",
+		},
 	} {
 		t.Run("", func(t *testing.T) {
-			require.Equal(t, tt.s, tt.err.Error())
+			require.Equal(t, tt.s, tt.join.Error())
 			if len(tt.iss) > 0 {
-				require.True(t, Is(tt.err, tt.iss...))
+				require.True(t, Is(tt.join, tt.iss...))
 			}
 			if len(tt.ass) > 0 {
-				require.True(t, As(tt.err, tt.ass...))
+				require.True(t, As(tt.join, tt.ass...))
 			}
 		})
 	}