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package dag
import (
"sort"
"testing"
"github.com/stretchr/testify/require"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/repository"
)
func allEntities(t testing.TB, bugs <-chan StreamedEntity) []*Entity {
t.Helper()
var result []*Entity
for streamed := range bugs {
require.NoError(t, streamed.Err)
result = append(result, streamed.Entity)
}
return result
}
func TestPushPull(t *testing.T) {
repoA, repoB, remote, id1, id2, def := makeTestContextRemote(t)
defer repository.CleanupTestRepos(repoA, repoB, remote)
// A --> remote --> B
e := New(def)
e.Append(newOp1(id1, "foo"))
err := e.Commit(repoA)
require.NoError(t, err)
_, err = Push(def, repoA, "remote")
require.NoError(t, err)
err = Pull(def, repoB, "remote")
require.NoError(t, err)
entities := allEntities(t, ReadAll(def, repoB))
require.Len(t, entities, 1)
// B --> remote --> A
e = New(def)
e.Append(newOp2(id2, "bar"))
err = e.Commit(repoB)
require.NoError(t, err)
_, err = Push(def, repoB, "remote")
require.NoError(t, err)
err = Pull(def, repoA, "remote")
require.NoError(t, err)
entities = allEntities(t, ReadAll(def, repoB))
require.Len(t, entities, 2)
}
func TestListLocalIds(t *testing.T) {
repoA, repoB, remote, id1, id2, def := makeTestContextRemote(t)
defer repository.CleanupTestRepos(repoA, repoB, remote)
// A --> remote --> B
e := New(def)
e.Append(newOp1(id1, "foo"))
err := e.Commit(repoA)
require.NoError(t, err)
e = New(def)
e.Append(newOp2(id2, "bar"))
err = e.Commit(repoA)
require.NoError(t, err)
listLocalIds(t, def, repoA, 2)
listLocalIds(t, def, repoB, 0)
_, err = Push(def, repoA, "remote")
require.NoError(t, err)
_, err = Fetch(def, repoB, "remote")
require.NoError(t, err)
listLocalIds(t, def, repoA, 2)
listLocalIds(t, def, repoB, 0)
err = Pull(def, repoB, "remote")
require.NoError(t, err)
listLocalIds(t, def, repoA, 2)
listLocalIds(t, def, repoB, 2)
}
func listLocalIds(t *testing.T, def Definition, repo repository.RepoData, expectedCount int) {
ids, err := ListLocalIds(def, repo)
require.NoError(t, err)
require.Len(t, ids, expectedCount)
}
func assertMergeResults(t *testing.T, expected []entity.MergeResult, results <-chan entity.MergeResult) {
t.Helper()
var allResults []entity.MergeResult
for result := range results {
allResults = append(allResults, result)
}
require.Equal(t, len(expected), len(allResults))
sort.Slice(allResults, func(i, j int) bool {
return allResults[i].Id < allResults[j].Id
})
sort.Slice(expected, func(i, j int) bool {
return expected[i].Id < expected[j].Id
})
for i, result := range allResults {
require.NoError(t, result.Err)
require.Equal(t, expected[i].Id, result.Id)
require.Equal(t, expected[i].Status, result.Status)
switch result.Status {
case entity.MergeStatusNew, entity.MergeStatusUpdated:
require.NotNil(t, result.Entity)
require.Equal(t, expected[i].Id, result.Entity.Id())
}
i++
}
}
func TestMerge(t *testing.T) {
repoA, repoB, remote, id1, id2, def := makeTestContextRemote(t)
defer repository.CleanupTestRepos(repoA, repoB, remote)
// SCENARIO 1
// if the remote Entity doesn't exist locally, it's created
// 2 entities in repoA + push to remote
e1 := New(def)
e1.Append(newOp1(id1, "foo"))
err := e1.Commit(repoA)
require.NoError(t, err)
e2 := New(def)
e2.Append(newOp2(id2, "bar"))
err = e2.Commit(repoA)
require.NoError(t, err)
_, err = Push(def, repoA, "remote")
require.NoError(t, err)
// repoB: fetch + merge from remote
_, err = Fetch(def, repoB, "remote")
require.NoError(t, err)
results := MergeAll(def, repoB, "remote")
assertMergeResults(t, []entity.MergeResult{
{
Id: e1.Id(),
Status: entity.MergeStatusNew,
},
{
Id: e2.Id(),
Status: entity.MergeStatusNew,
},
}, results)
// SCENARIO 2
// if the remote and local Entity have the same state, nothing is changed
results = MergeAll(def, repoB, "remote")
assertMergeResults(t, []entity.MergeResult{
{
Id: e1.Id(),
Status: entity.MergeStatusNothing,
},
{
Id: e2.Id(),
Status: entity.MergeStatusNothing,
},
}, results)
// SCENARIO 3
// if the local Entity has new commits but the remote don't, nothing is changed
e1.Append(newOp1(id1, "barbar"))
err = e1.Commit(repoA)
require.NoError(t, err)
e2.Append(newOp2(id2, "barbarbar"))
err = e2.Commit(repoA)
require.NoError(t, err)
results = MergeAll(def, repoA, "remote")
assertMergeResults(t, []entity.MergeResult{
{
Id: e1.Id(),
Status: entity.MergeStatusNothing,
},
{
Id: e2.Id(),
Status: entity.MergeStatusNothing,
},
}, results)
// SCENARIO 4
// if the remote has new commit, the local bug is updated to match the same history
// (fast-forward update)
}
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