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package syncz
import (
"context"
"fmt"
"slices"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/mock/gomock"
"go.uber.org/zap"
"go.uber.org/zap/zaptest"
)
func TestStartsWorkersAccordingToConfiguration(t *testing.T) {
for caseNum, config := range testConfigurations() {
t.Run(fmt.Sprintf("case %d", caseNum), func(t *testing.T) {
expectedNumberOfWorkers := len(config)
wm, ctrl, factory := setupWM(t)
worker := NewMockWorker(ctrl)
for i := 0; i < expectedNumberOfWorkers; i++ {
factory.EXPECT().
New(config[i]).
Return(worker)
}
worker.EXPECT().
Run(gomock.Any()).
Times(expectedNumberOfWorkers)
err := wm.ApplyConfiguration(config)
require.NoError(t, err)
})
}
}
func TestUpdatesWorkersAccordingToConfiguration(t *testing.T) {
normalOrder := testConfigurations()
reverseOrder := testConfigurations()
slices.Reverse(reverseOrder)
tests := []struct {
name string
configs [][]WorkSource[string, int]
}{
{
name: "normal order",
configs: normalOrder,
},
{
name: "reverse order",
configs: reverseOrder,
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
numProjects := numUniqueConfigs(tc.configs)
wm, ctrl, factory := setupWM(t)
worker := NewMockWorker(ctrl)
worker.EXPECT().
Run(gomock.Any()).
Do(func(ctx context.Context) {
<-ctx.Done()
}).
Times(numProjects)
factory.EXPECT().
New(gomock.Any()).
Return(worker).
Times(numProjects)
for _, config := range tc.configs {
err := wm.ApplyConfiguration(config)
require.NoError(t, err)
}
})
}
}
func TestErrorsOnDuplicateSourceID(t *testing.T) {
wm, _, _ := setupWM(t)
cfg := []WorkSource[string, int]{
{
ID: "123",
Configuration: 123,
},
{
ID: "123",
Configuration: 234,
},
}
err := wm.ApplyConfiguration(cfg)
assert.EqualError(t, err, "duplicate source id: 123")
}
func setupWM(t *testing.T) (*WorkerManager[string, int], *gomock.Controller, *MockWorkerFactory[string, int]) {
ctrl := gomock.NewController(t)
workerFactory := NewMockWorkerFactory[string, int](ctrl)
wm := NewWorkerManager[string, int](zaptest.NewLogger(t), testFld, workerFactory, testEqual)
t.Cleanup(wm.StopAllWorkers)
return wm, ctrl, workerFactory
}
func testFld(v string) zap.Field {
return zap.String("test_worker_id", v)
}
func testEqual(c1, c2 int) bool {
return c1 == c2
}
func numUniqueConfigs(cfgs [][]WorkSource[string, int]) int {
num := 0
configs := make(map[string]int)
for _, cfg := range cfgs {
for _, c := range cfg {
old, ok := configs[c.ID]
if ok {
if old != c.Configuration {
configs[c.ID] = c.Configuration
num++
}
} else {
configs[c.ID] = c.Configuration
num++
}
}
}
return num
}
func testConfigurations() [][]WorkSource[string, int] {
project1 := "bla1/project1"
project2 := "bla1/project2"
project3 := "bla3/project3"
return [][]WorkSource[string, int]{
{
// Empty
},
{
{
ID: project1,
Configuration: 1,
},
},
{
{
ID: project1,
Configuration: 2, // update config
},
{ // add new worker for project2
ID: project2,
Configuration: 3,
},
},
{
// remove project1 worker
{ // add new worker for project3
ID: project3,
Configuration: 5,
},
{
ID: project2,
Configuration: 4, // update config
},
},
}
}
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