package mergo_test import ( "testing" "dario.cat/mergo" ) func TestIssue209(t *testing.T) { dst := []string{"a", "b"} src := []string{"c", "d"} if err := mergo.Merge(&dst, src, mergo.WithAppendSlice); err != nil { t.Error(err) } expected := []string{"a", "b", "c", "d"} if len(dst) != len(expected) { t.Errorf("arrays not equal length") } for i := range expected { if dst[i] != expected[i] { t.Errorf("array elements at %d are not equal", i) } } }