package manager import ( "encoding/json" "errors" "testing" "gotest.tools/v3/assert" is "gotest.tools/v3/assert/cmp" ) func TestPluginError(t *testing.T) { err := NewPluginError("new error") assert.Check(t, is.Error(err, "new error")) inner := errors.New("testing") err = NewPluginError("wrapping: %w", inner) assert.Check(t, is.Error(err, "wrapping: testing")) assert.Check(t, is.ErrorIs(err, inner)) actual, err := json.Marshal(err) assert.Check(t, err) assert.Check(t, is.Equal(`"wrapping: testing"`, string(actual))) }