48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
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// Copyright (C) MongoDB, Inc. 2017-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package bsoncodec
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestZeoerInterfaceUsedByDecoder(t *testing.T) {
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enc := &StructCodec{}
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// cases that are zero, because they are known types or pointers
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var st *nonZeroer
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assert.True(t, enc.isZero(st))
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assert.True(t, enc.isZero(0))
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assert.True(t, enc.isZero(false))
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// cases that shouldn't be zero
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st = &nonZeroer{value: false}
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assert.False(t, enc.isZero(struct{ val bool }{val: true}))
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assert.False(t, enc.isZero(struct{ val bool }{val: false}))
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assert.False(t, enc.isZero(st))
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st.value = true
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assert.False(t, enc.isZero(st))
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// a test to see if the interface impacts the outcome
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z := zeroTest{}
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assert.False(t, enc.isZero(z))
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z.reportZero = true
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assert.True(t, enc.isZero(z))
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// *time.Time with nil should be zero
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var tp *time.Time
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assert.True(t, enc.isZero(tp))
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// actually all zeroer if nil should also be zero
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var zp *zeroTest
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assert.True(t, enc.isZero(zp))
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}
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