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Merge pull request #47 from nextmv-io/ds/fix/alloc
Fix memory consumption when multiple models are used
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| // © 2019-present nextmv.io inc | ||
|
|
||
| package nextroute_test | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/nextmv-io/nextroute" | ||
| ) | ||
|
|
||
| func BenchmarkAllocationsSolution(b *testing.B) { | ||
| for i := 0; i < b.N; i++ { | ||
| b.StopTimer() | ||
| model, err := createModel(singleVehiclePlanSequenceModel()) | ||
| if err != nil { | ||
| b.Error(err) | ||
| } | ||
|
|
||
| maximum := nextroute.NewVehicleTypeDurationExpression( | ||
| "maximum duration", | ||
| 3*time.Minute, | ||
| ) | ||
| expression := nextroute.NewStopExpression("test", 2.0) | ||
|
|
||
| cnstr, err := nextroute.NewMaximum(expression, maximum) | ||
| if err != nil { | ||
| b.Error(err) | ||
| } | ||
|
|
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| err = model.AddConstraint(cnstr) | ||
| if err != nil { | ||
| b.Error(err) | ||
| } | ||
| b.StartTimer() | ||
| _, err = nextroute.NewSolution(model) | ||
| if err != nil { | ||
| b.Fatal(err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // TestLimitAllocations tests the number of allocations in the solution creation. | ||
| // We want to ensure that the number of allocations is limited and does not grow | ||
| // accidentally. | ||
| func TestLimitAllocations(t *testing.T) { | ||
| model, err := createModel(singleVehiclePlanSequenceModel()) | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
|
|
||
| maximum := nextroute.NewVehicleTypeDurationExpression( | ||
| "maximum duration", | ||
| 3*time.Minute, | ||
| ) | ||
| expression := nextroute.NewStopExpression("test", 2.0) | ||
|
|
||
| cnstr, err := nextroute.NewMaximum(expression, maximum) | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
|
|
||
| err = model.AddConstraint(cnstr) | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
| allocs := testing.AllocsPerRun(2, func() { | ||
| _, err = nextroute.NewSolution(model) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| }) | ||
| if allocs > 66 { | ||
| t.Errorf("expected 66 allocations, got %v", allocs) | ||
| } | ||
| } |