46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
// stm: #unit
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package headbuffer
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/filecoin-project/lotus/api"
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)
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func TestHeadBuffer(t *testing.T) {
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//stm: @TOOLS_HEAD_BUFFER_PUSH_001, @TOOLS_HEAD_BUFFER_POP_001
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t.Run("Straight Push through", func(t *testing.T) {
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hb := NewHeadChangeStackBuffer(5)
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require.Nil(t, hb.Push(&api.HeadChange{Type: "1"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "2"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "3"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "4"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "5"}))
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hc := hb.Push(&api.HeadChange{Type: "6"})
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require.Equal(t, hc.Type, "1")
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})
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t.Run("Reverts", func(t *testing.T) {
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hb := NewHeadChangeStackBuffer(5)
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require.Nil(t, hb.Push(&api.HeadChange{Type: "1"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "2"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "3"}))
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hb.Pop()
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require.Nil(t, hb.Push(&api.HeadChange{Type: "3a"}))
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hb.Pop()
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require.Nil(t, hb.Push(&api.HeadChange{Type: "3b"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "4"}))
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require.Nil(t, hb.Push(&api.HeadChange{Type: "5"}))
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hc := hb.Push(&api.HeadChange{Type: "6"})
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require.Equal(t, hc.Type, "1")
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hc = hb.Push(&api.HeadChange{Type: "7"})
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require.Equal(t, hc.Type, "2")
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hc = hb.Push(&api.HeadChange{Type: "8"})
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require.Equal(t, hc.Type, "3b")
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})
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}
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