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package common
import (
"context"
"fmt"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestNewWorkflow(t *testing.T) {
assert := assert.New(t)
ctx := context.Background()
// empty
emptyWorkflow := NewPipelineExecutor()
assert.Nil(emptyWorkflow(ctx))
// error case
errorWorkflow := NewErrorExecutor(fmt.Errorf("test error"))
assert.NotNil(errorWorkflow(ctx))
// multiple success case
runcount := 0
successWorkflow := NewPipelineExecutor(
func(ctx context.Context) error {
runcount++
return nil
},
func(ctx context.Context) error {
runcount++
return nil
})
assert.Nil(successWorkflow(ctx))
assert.Equal(2, runcount)
}
func TestNewConditionalExecutor(t *testing.T) {
assert := assert.New(t)
ctx := context.Background()
trueCount := 0
falseCount := 0
err := NewConditionalExecutor(func(ctx context.Context) bool {
return false
}, func(ctx context.Context) error {
trueCount++
return nil
}, func(ctx context.Context) error {
falseCount++
return nil
})(ctx)
assert.Nil(err)
assert.Equal(0, trueCount)
assert.Equal(1, falseCount)
err = NewConditionalExecutor(func(ctx context.Context) bool {
return true
}, func(ctx context.Context) error {
trueCount++
return nil
}, func(ctx context.Context) error {
falseCount++
return nil
})(ctx)
assert.Nil(err)
assert.Equal(1, trueCount)
assert.Equal(1, falseCount)
}
func TestNewParallelExecutor(t *testing.T) {
assert := assert.New(t)
ctx := context.Background()
count := 0
activeCount := 0
maxCount := 0
emptyWorkflow := NewPipelineExecutor(func(ctx context.Context) error {
count++
activeCount++
if activeCount > maxCount {
maxCount = activeCount
}
time.Sleep(2 * time.Second)
activeCount--
return nil
})
err := NewParallelExecutor(2, emptyWorkflow, emptyWorkflow, emptyWorkflow)(ctx)
assert.Equal(3, count, "should run all 3 executors")
assert.Equal(2, maxCount, "should run at most 2 executors in parallel")
assert.Nil(err)
// Reset to test running the executor with 0 parallelism
count = 0
activeCount = 0
maxCount = 0
errSingle := NewParallelExecutor(0, emptyWorkflow, emptyWorkflow, emptyWorkflow)(ctx)
assert.Equal(3, count, "should run all 3 executors")
assert.Equal(1, maxCount, "should run at most 1 executors in parallel")
assert.Nil(errSingle)
}
func TestNewParallelExecutorFailed(t *testing.T) {
assert := assert.New(t)
ctx, cancel := context.WithCancel(context.Background())
cancel()
count := 0
errorWorkflow := NewPipelineExecutor(func(ctx context.Context) error {
count++
return fmt.Errorf("fake error")
})
err := NewParallelExecutor(1, errorWorkflow)(ctx)
assert.Equal(1, count)
assert.ErrorIs(context.Canceled, err)
}
func TestNewParallelExecutorCanceled(t *testing.T) {
assert := assert.New(t)
ctx, cancel := context.WithCancel(context.Background())
cancel()
errExpected := fmt.Errorf("fake error")
count := 0
successWorkflow := NewPipelineExecutor(func(ctx context.Context) error {
count++
return nil
})
errorWorkflow := NewPipelineExecutor(func(ctx context.Context) error {
count++
return errExpected
})
err := NewParallelExecutor(3, errorWorkflow, successWorkflow, successWorkflow)(ctx)
assert.Equal(3, count)
assert.Error(errExpected, err)
}
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