VictoriaMetrics/lib/logstorage/logfmt_parser_test.go

package logstorage

import (
	"testing"
)

func TestLogfmtParser(t *testing.T) {
	f := func(s, resultExpected string) {
		t.Helper()

		p := getLogfmtParser()
		defer putLogfmtParser(p)

		p.parse(s)
		result := MarshalFieldsToLogfmt(nil, p.fields)
		if string(result) != resultExpected {
			t.Fatalf("unexpected result when parsing [%s]; got\n%s\nwant\n%s\n", s, result, resultExpected)
		}
	}

	f(``, ``)
	f(`foo=bar`, `foo=bar`)
	f(`foo="bar=baz x=y"`, `foo="bar=baz x=y"`)
	f(`foo=`, `foo=`)
	f(`foo`, `foo=`)
	f(`foo bar`, `foo= bar=`)
	f(`foo bar=baz`, `foo= bar=baz`)
	f(`foo=bar baz="x y" a=b`, `foo=bar baz="x y" a=b`)
	f(`  foo=bar  baz=x =z qwe`, `foo=bar baz=x _msg=z qwe=`)
}