qparser_benchmark_test.go

package qparser

import (
	"testing"
	"time"
)

// BenchmarkIsQuery benchmarks the performance of IsQuery function
func BenchmarkIsQuery(b *testing.B) {
	testCases := []string{
		"title:hello world",
		"plain text without query",
		"title:hello author:john limit:10 tags:go,programming",
		"",
		"very long text without any query syntax just plain text to test performance",
	}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		for _, input := range testCases {
			IsQuery(input)
		}
	}
}

// BenchmarkUnmarshal_Simple benchmarks simple parsing performance
func BenchmarkUnmarshal_Simple(b *testing.B) {
	type SimpleFilter struct {
		Keyword string `query:"keyword,default"`
		Title   string `query:"title"`
		Limit   int    `query:"limit"`
	}

	query := "hello world title:foobar limit:42"

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter SimpleFilter
		Unmarshal(query, &filter)
	}
}

// BenchmarkUnmarshal_Complex benchmarks complex parsing performance
func BenchmarkUnmarshal_Complex(b *testing.B) {
	type ComplexFilter struct {
		Keyword   string    `query:"keyword,default"`
		Title     string    `query:"title"`
		Author    string    `query:"author"`
		Limit     int       `query:"limit"`
		Offset    int       `query:"offset"`
		Tags      []string  `query:"tags"`
		Published *bool     `query:"published"`
		Before    time.Time `query:"before,format=2006-01-02"`
		After     time.Time `query:"after,format=2006-01-02"`
		Score     float64   `query:"score"`
	}

	query := `hello world title:"Go Programming" author:john limit:50 offset:100 tags:go,programming,backend published:true before:2024-12-31 after:2024-01-01 score:9.5 extra text`

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter ComplexFilter
		Unmarshal(query, &filter)
	}
}

// BenchmarkUnmarshalStrict_Simple benchmarks Strict mode performance
func BenchmarkUnmarshalStrict_Simple(b *testing.B) {
	type SimpleFilter struct {
		Keyword string `query:"keyword,default"`
		Title   string `query:"title"`
		Limit   int    `query:"limit"`
	}

	query := "hello world title:foobar limit:42"

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter SimpleFilter
		UnmarshalStrict(query, &filter)
	}
}

// BenchmarkUnmarshalStrict_WithErrors benchmarks Strict mode performance with errors
func BenchmarkUnmarshalStrict_WithErrors(b *testing.B) {
	type SimpleFilter struct {
		Keyword string `query:"keyword,default"`
		Title   string `query:"title"`
		Limit   int    `query:"limit"`
	}

	query := "hello world title:foobar limit:invalid unknown:field"

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter SimpleFilter
		UnmarshalStrict(query, &filter)
	}
}

// BenchmarkUnmarshal_LongQuery benchmarks long query string performance
func BenchmarkUnmarshal_LongQuery(b *testing.B) {
	type LongFilter struct {
		Keyword string   `query:"keyword,default"`
		Tags    []string `query:"tags"`
		Limit   int      `query:"limit"`
	}

	// Generate a long query string
	query := "this is a very long search query with many words that should be handled efficiently by the parser " +
		"tags:go,programming,web,development,backend,frontend,database,microservices,kubernetes,docker " +
		"limit:100 " +
		"and even more text here to make it really long and test the performance with extensive content"

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter LongFilter
		Unmarshal(query, &filter)
	}
}

// BenchmarkUnmarshal_ManyFields benchmarks many fields struct performance
func BenchmarkUnmarshal_ManyFields(b *testing.B) {
	type ManyFieldsFilter struct {
		Keyword   string    `query:"keyword,default"`
		Title     string    `query:"title"`
		Author    string    `query:"author"`
		Category  string    `query:"category"`
		Status    string    `query:"status"`
		Priority  string    `query:"priority"`
		Assignee  string    `query:"assignee"`
		Reporter  string    `query:"reporter"`
		Project   string    `query:"project"`
		Version   string    `query:"version"`
		Limit     int       `query:"limit"`
		Offset    int       `query:"offset"`
		Page      int       `query:"page"`
		Size      int       `query:"size"`
		Score     float64   `query:"score"`
		Rating    float64   `query:"rating"`
		Published bool      `query:"published"`
		Featured  bool      `query:"featured"`
		CreatedAt time.Time `query:"created_at,format=2006-01-02"`
		UpdatedAt time.Time `query:"updated_at,format=2006-01-02"`
	}

	query := `search text title:example author:john category:tech status:active priority:high assignee:alice ` +
		`reporter:bob project:webapp version:1.0 limit:50 offset:0 page:1 size:20 score:8.5 rating:4.2 ` +
		`published:true featured:false created_at:2024-01-01 updated_at:2024-12-31 additional content`

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		var filter ManyFieldsFilter
		Unmarshal(query, &filter)
	}
}