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|
package db
import (
"context"
"sync"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/domain"
)
func TestInMemoryRepository(t *testing.T) {
storage := NewRepository[*domain.Sparkle]()
t.Run("Save", func(t *testing.T) {
t.Run("an invalid Sparkle", func(t *testing.T) {
assert.Error(t, storage.Save(t.Context(), &domain.Sparkle{Reason: "because"}))
assert.Equal(t, 0, len(storage.All(t.Context())))
})
t.Run("a valid Sparkle", func(t *testing.T) {
sparkle := &domain.Sparkle{Sparklee: "@tanuki", Reason: "because"}
require.NoError(t, storage.Save(t.Context(), sparkle))
sparkles := storage.All(t.Context())
assert.Equal(t, 1, len(sparkles))
assert.NotEmpty(t, sparkles[0].ID)
assert.Equal(t, "@tanuki", sparkles[0].Sparklee)
assert.Equal(t, "because", sparkles[0].Reason)
})
t.Run("prevents race conditions", func(t *testing.T) {
repository := NewRepository[*domain.Sparkle]()
ctx := context.Background()
numGoroutines := 100
numOperationsPerGoroutine := 50
var wg sync.WaitGroup
errors := make(chan error, numGoroutines*2)
for i := 0; i < numGoroutines; i++ {
wg.Add(1)
go func(workerID int) {
defer wg.Done()
defer func() {
if r := recover(); r != nil {
errors <- assert.AnError
}
}()
for j := 0; j < numOperationsPerGoroutine; j++ {
if err := repository.Save(ctx, &domain.Sparkle{
Sparklee: "@user" + string(rune(workerID)),
Reason: "for running concurrently",
}); err != nil {
errors <- err
return
}
}
}(i)
}
for i := 0; i < numGoroutines; i++ {
wg.Add(1)
go func() {
defer wg.Done()
defer func() {
if r := recover(); r != nil {
errors <- assert.AnError
}
}()
for j := 0; j < numOperationsPerGoroutine; j++ {
_ = repository.All(ctx)
}
}()
}
wg.Wait()
close(errors)
var raceErrors []error
for err := range errors {
raceErrors = append(raceErrors, err)
}
assert.Equal(t, numGoroutines*numOperationsPerGoroutine, len(repository.All(ctx)))
assert.Empty(t, raceErrors)
})
})
t.Run("All", func(t *testing.T) {
repository := NewRepository[*domain.Sparkle]()
require.NoError(t, repository.Save(t.Context(), &domain.Sparkle{
Sparklee: "@tanuki",
Reason: "because",
}))
t.Run("prevents unintended modifications", func(t *testing.T) {
items := repository.All(t.Context())
require.Equal(t, 1, len(items))
sparkle := items[0]
sparkle.Reason = "haha"
assert.Equal(t, "because", repository.All(t.Context())[0].Reason)
})
t.Run("prevents race conditions", func(t *testing.T) {
t.Skip()
})
})
t.Run("Find", func(t *testing.T) {
t.Run("when the entity exists", func(t *testing.T) {
sparkle, err := domain.NewSparkle("@tanuki for testing this func")
require.NoError(t, err)
require.NoError(t, storage.Save(t.Context(), sparkle))
result := storage.Find(t.Context(), sparkle.ID)
require.NotNil(t, result)
require.Equal(t, sparkle, result)
})
t.Run("when the entity does not exist", func(t *testing.T) {
result := storage.Find(t.Context(), "unknown")
require.Nil(t, result)
})
})
}
|
