github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/opt/props/volatility_test.go (about)

     1  // Copyright 2020 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package props
    12  
    13  import (
    14  	"testing"
    15  
    16  	"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
    17  	"github.com/stretchr/testify/require"
    18  )
    19  
    20  func TestVolatilitySet(t *testing.T) {
    21  	var v VolatilitySet
    22  
    23  	check := func(str string, isLeakProof, hasStable, hasVolatile bool) {
    24  		t.Helper()
    25  
    26  		require.Equal(t, v.String(), str)
    27  		require.Equal(t, v.IsLeakProof(), isLeakProof)
    28  		require.Equal(t, v.HasStable(), hasStable)
    29  		require.Equal(t, v.HasVolatile(), hasVolatile)
    30  	}
    31  	check("leak-proof", true, false, false)
    32  
    33  	v.Add(tree.VolatilityLeakProof)
    34  	check("leak-proof", true, false, false)
    35  
    36  	v.AddImmutable()
    37  	check("immutable", false, false, false)
    38  
    39  	v.AddStable()
    40  	check("stable", false, true, false)
    41  
    42  	v.AddVolatile()
    43  	check("stable+volatile", false, true, true)
    44  
    45  	v = 0
    46  	v.AddVolatile()
    47  	check("volatile", false, false, true)
    48  
    49  	var w VolatilitySet
    50  	w.AddImmutable()
    51  	v.UnionWith(w)
    52  	check("volatile", false, false, true)
    53  
    54  	w.AddStable()
    55  	v.UnionWith(w)
    56  	check("stable+volatile", false, true, true)
    57  }