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bench: add Realistic10 (10% quoted) benchmark case #90

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Merged
nnnkkk7 merged 1 commit into from
Jun 14, 2026
Merged

bench: add Realistic10 (10% quoted) benchmark case #90

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24 changes: 24 additions & 0 deletions benchmark_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,30 @@ func BenchmarkReadAll_Quoted_100K_SIMD(b *testing.B) {
}
}

// =============================================================================
// ReadAll Benchmarks - Realistic CSV (10% quoted)
// =============================================================================

func BenchmarkReadAll_Realistic10_100K_Stdlib(b *testing.B) {
data := generateRealistic10CSV(100000, 10)
b.SetBytes(int64(len(data)))
for b.Loop() {
reader := csv.NewReader(bytes.NewReader(data))
reader.FieldsPerRecord = -1
_, _ = reader.ReadAll()
}
}

func BenchmarkReadAll_Realistic10_100K_SIMD(b *testing.B) {
data := generateRealistic10CSV(100000, 10)
b.SetBytes(int64(len(data)))
for b.Loop() {
reader := NewReader(bytes.NewReader(data))
reader.FieldsPerRecord = -1
_, _ = reader.ReadAll()
}
}

// =============================================================================
// ReadAll Benchmarks - Realistic CSV (20% quoted)
// =============================================================================
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12 changes: 12 additions & 0 deletions test_helpers_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,18 @@ func generateEscapedQuotesCSV(numRows, numCols int) []byte {
return buf.Bytes()
}

// generateRealistic10CSV generates CSV with 1/10 quoted fields containing commas (~10%).
// Row template: "Alice, Smith",30,Tokyo,engineer,100,Japan,active,42,NewYork,2024
// Col 0 is quoted.
func generateRealistic10CSV(numRows, _ int) []byte {
var buf bytes.Buffer
for i := 0; i < numRows; i++ {
buf.WriteString(`"Alice, Smith",30,Tokyo,engineer,100,Japan,active,42,NewYork,2024`)
buf.WriteByte('\n')
}
return buf.Bytes()
}

// generateRealistic20CSV generates CSV with 2/10 quoted fields containing commas (~20%).
// Row template: "Alice, Smith",30,Tokyo,engineer,100,Japan,active,42,"New York, US",2024
// Cols 0,8 are quoted.
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