syncthing/vector_test.go

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// Copyright (C) 2015 The Protocol Authors.
package protocol
import "testing"
func TestUpdate(t *testing.T) {
var v Vector
// Append
v = v.Update(42)
expected := Vector{Counter{42, 1}}
if v.Compare(expected) != Equal {
t.Errorf("Update error, %+v != %+v", v, expected)
}
// Insert at front
v = v.Update(36)
expected = Vector{Counter{36, 1}, Counter{42, 1}}
if v.Compare(expected) != Equal {
t.Errorf("Update error, %+v != %+v", v, expected)
}
// Insert in moddle
v = v.Update(37)
expected = Vector{Counter{36, 1}, Counter{37, 1}, Counter{42, 1}}
if v.Compare(expected) != Equal {
t.Errorf("Update error, %+v != %+v", v, expected)
}
// Update existing
v = v.Update(37)
expected = Vector{Counter{36, 1}, Counter{37, 2}, Counter{42, 1}}
if v.Compare(expected) != Equal {
t.Errorf("Update error, %+v != %+v", v, expected)
}
}
func TestCopy(t *testing.T) {
v0 := Vector{Counter{42, 1}}
v1 := v0.Copy()
v1.Update(42)
if v0.Compare(v1) != Lesser {
t.Errorf("Copy error, %+v should be ancestor of %+v", v0, v1)
}
}
func TestMerge(t *testing.T) {
testcases := []struct {
a, b, m Vector
}{
// No-ops
{
Vector{},
Vector{},
Vector{},
},
{
Vector{Counter{22, 1}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
},
// Appends
{
Vector{},
Vector{Counter{22, 1}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
},
{
Vector{Counter{22, 1}},
Vector{Counter{42, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
},
{
Vector{Counter{22, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
},
// Insert
{
Vector{Counter{22, 1}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{23, 2}, Counter{42, 1}},
Vector{Counter{22, 1}, Counter{23, 2}, Counter{42, 1}},
},
{
Vector{Counter{42, 1}},
Vector{Counter{22, 1}},
Vector{Counter{22, 1}, Counter{42, 1}},
},
// Update
{
Vector{Counter{22, 1}, Counter{42, 2}},
Vector{Counter{22, 2}, Counter{42, 1}},
Vector{Counter{22, 2}, Counter{42, 2}},
},
// All of the above
{
Vector{Counter{10, 1}, Counter{20, 2}, Counter{30, 1}},
Vector{Counter{5, 1}, Counter{10, 2}, Counter{15, 1}, Counter{20, 1}, Counter{25, 1}, Counter{35, 1}},
Vector{Counter{5, 1}, Counter{10, 2}, Counter{15, 1}, Counter{20, 2}, Counter{25, 1}, Counter{30, 1}, Counter{35, 1}},
},
}
for i, tc := range testcases {
if m := tc.a.Merge(tc.b); m.Compare(tc.m) != Equal {
t.Errorf("%d: %+v.Merge(%+v) == %+v (expected %+v)", i, tc.a, tc.b, m, tc.m)
}
}
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}
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func TestCounterValue(t *testing.T) {
v0 := Vector{Counter{42, 1}, Counter{64, 5}}
if v0.Counter(42) != 1 {
t.Error("Counter error, %d != %d", v0.Counter(42), 1)
}
if v0.Counter(64) != 5 {
t.Error("Counter error, %d != %d", v0.Counter(64), 5)
}
if v0.Counter(72) != 0 {
t.Error("Counter error, %d != %d", v0.Counter(72), 0)
}
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}