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package rope
import (
"testing"
"github.com/bruth/assert"
)
func disableCoalesce() func() {
// Temporarily disable auto-coalescing.
thr := concatThreshold
concatThreshold = 0
return func() { concatThreshold = thr }
}
var rebalanceTestRopes []Rope
func init() {
defer disableCoalesce()()
rebalanceTestRopes = []Rope{
New("a").Append(New("bc").Append(New("d").AppendString("ef"))), //.AppendString("g"),
New("a").Append(New("bc").Append(New("d").AppendString("ef"))).AppendString("g"),
New("a").AppendString("bcd").AppendString("efghijkl").AppendString("mno"),
New("abc").AppendString("def").AppendString("def").AppendString("def").AppendString("def").AppendString("def").AppendString("ghiklmnopqrstuvwxyzklmnopqrstuvwxyz").AppendString("j").AppendString("j").AppendString("j").AppendString("j").AppendString("j").AppendString("klmnopqrstuvwxyz"),
}
//~ for i, r := range largeRopes {
//~ for j := 0; j < 8; j++ {
//~ r = r.Append(r)
//~ }
//~ largeRopes[i] = r
//~ }
//~ n := New("a")
var r Rope
for i := 0; i < 100; i++ {
r = r.AppendString(string(' ' + i))
}
rebalanceTestRopes = append(rebalanceTestRopes, r)
rebalanceTestRopes = append(rebalanceTestRopes, emptyRope, Rope{})
}
func TestRebalance(t *testing.T) {
defer disableCoalesce()()
for _, orig := range rebalanceTestRopes {
origStr := orig.String()
rebalanced := orig.Rebalance()
rebalancedStr := rebalanced.String()
//~ pretty.Println(orig, "(", orig.isBalanced(), ") ==> (", rebalanced.isBalanced(), ")", rebalanced)
assert.Equal(t, origStr, rebalancedStr)
if rebalanced.node != nil && orig.node != nil {
assert.True(t, rebalanced.node.depth() <= orig.node.depth())
}
assert.True(t, rebalanced.isBalanced())
}
}
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