package logstorage

import (
	"testing"
)

func TestPipeFieldNamesUpdateNeededFields(t *testing.T) {
	f := func(s string, neededFields, unneededFields, neededFieldsExpected, unneededFieldsExpected string) {
		t.Helper()
		expectPipeNeededFields(t, s, neededFields, unneededFields, neededFieldsExpected, unneededFieldsExpected)
	}

	// all the needed fields
	f("field_names as f1", "*", "", "*", "")

	// all the needed fields, unneeded fields do not intersect with src
	f("field_names as f3", "*", "f1,f2", "*", "")

	// all the needed fields, unneeded fields intersect with src
	f("field_names as f1", "*", "s1,f1,f2", "*", "")

	// needed fields do not intersect with src
	f("field_names as f3", "f1,f2", "", "*", "")

	// needed fields intersect with src
	f("field_names as f1", "s1,f1,f2", "", "*", "")
}