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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
import (
"math/big"
"testing"
)
func nodrune(r rune) *Node {
return nodlit(Val{&Mpint{Val: *big.NewInt(int64(r)), Rune: true}})
}
func nodflt(f float64) *Node {
return nodlit(Val{&Mpflt{Val: *big.NewFloat(f)}})
}
func TestCaseClauseByConstVal(t *testing.T) {
tests := []struct {
a, b *Node
}{
// CTFLT
{nodflt(0.1), nodflt(0.2)},
// CTINT
{nodintconst(0), nodintconst(1)},
// CTRUNE
{nodrune('a'), nodrune('b')},
// CTSTR
{nodlit(Val{"ab"}), nodlit(Val{"abc"})},
{nodlit(Val{"ab"}), nodlit(Val{"xyz"})},
{nodlit(Val{"abc"}), nodlit(Val{"xyz"})},
}
for i, test := range tests {
a := caseClause{node: nod(OXXX, test.a, nil)}
b := caseClause{node: nod(OXXX, test.b, nil)}
s := caseClauseByConstVal{a, b}
if less := s.Less(0, 1); !less {
t.Errorf("%d: caseClauseByConstVal(%v, %v) = false", i, test.a, test.b)
}
if less := s.Less(1, 0); less {
t.Errorf("%d: caseClauseByConstVal(%v, %v) = true", i, test.a, test.b)
}
}
}
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