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39 lines
971 B
Go
39 lines
971 B
Go
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package backend_test
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import (
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"testing"
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"github.com/restic/restic/internal/backend"
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"github.com/restic/restic/internal/test"
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)
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type testBackend struct {
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backend.Backend
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}
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func (t *testBackend) Unwrap() backend.Backend {
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return nil
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}
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type otherTestBackend struct {
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backend.Backend
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}
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func (t *otherTestBackend) Unwrap() backend.Backend {
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return t.Backend
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}
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func TestAsBackend(t *testing.T) {
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other := otherTestBackend{}
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test.Assert(t, backend.AsBackend[*testBackend](other) == nil, "otherTestBackend is not a testBackend backend")
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testBe := &testBackend{}
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test.Assert(t, backend.AsBackend[*testBackend](testBe) == testBe, "testBackend was not returned")
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wrapper := &otherTestBackend{Backend: testBe}
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test.Assert(t, backend.AsBackend[*testBackend](wrapper) == testBe, "failed to unwrap testBackend backend")
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wrapper.Backend = other
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test.Assert(t, backend.AsBackend[*testBackend](wrapper) == nil, "a wrapped otherTestBackend is not a testBackend")
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}
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