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3fd5f4380f
github.com/go-multierror/multierror served us well. But we need a few feature from it (implement Is), and it's not worth maintaining a fork of such a small module. Instead, I did a clean room implementation inspired by its API. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package multierr_test
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import (
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"errors"
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"testing"
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qt "github.com/frankban/quicktest"
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"github.com/google/go-cmp/cmp/cmpopts"
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"tailscale.com/util/multierr"
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)
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func TestAll(t *testing.T) {
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C := qt.New(t)
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eqErr := qt.CmpEquals(cmpopts.EquateErrors())
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type E = []error
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N := multierr.New
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a := errors.New("a")
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b := errors.New("b")
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c := errors.New("c")
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d := errors.New("d")
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x := errors.New("x")
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abcd := E{a, b, c, d}
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tests := []struct {
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In E // input to New
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WantNil bool // want nil returned?
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WantSingle error // if non-nil, want this single error returned
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WantErrors []error // if non-nil, want an Error composed of these errors returned
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}{
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{In: nil, WantNil: true},
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{In: E{nil}, WantNil: true},
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{In: E{nil, nil}, WantNil: true},
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{In: E{a}, WantSingle: a},
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{In: E{a, nil}, WantSingle: a},
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{In: E{nil, a}, WantSingle: a},
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{In: E{nil, a, nil}, WantSingle: a},
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{In: E{a, b}, WantErrors: E{a, b}},
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{In: E{nil, a, nil, b, nil}, WantErrors: E{a, b}},
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{In: E{a, b, N(c, d)}, WantErrors: E{a, b, c, d}},
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{In: E{a, N(b, c), d}, WantErrors: E{a, b, c, d}},
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{In: E{N(a, b), c, d}, WantErrors: E{a, b, c, d}},
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{In: E{N(a, b), N(c, d)}, WantErrors: E{a, b, c, d}},
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{In: E{nil, N(a, nil, b), nil, N(c, d)}, WantErrors: E{a, b, c, d}},
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{In: E{N(a, N(b, N(c, N(d))))}, WantErrors: E{a, b, c, d}},
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{In: E{N(N(N(N(a), b), c), d)}, WantErrors: E{a, b, c, d}},
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{In: E{N(abcd...)}, WantErrors: E{a, b, c, d}},
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{In: E{N(abcd...), N(abcd...)}, WantErrors: E{a, b, c, d, a, b, c, d}},
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}
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for _, test := range tests {
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got := multierr.New(test.In...)
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if test.WantNil {
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C.Assert(got, qt.IsNil)
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continue
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}
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if test.WantSingle != nil {
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C.Assert(got, eqErr, test.WantSingle)
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continue
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}
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ee, _ := got.(multierr.Error)
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C.Assert(ee.Errors(), eqErr, test.WantErrors)
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for _, e := range test.WantErrors {
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C.Assert(ee.Is(e), qt.IsTrue)
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}
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C.Assert(ee.Is(x), qt.IsFalse)
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}
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}
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