mirror of
https://github.com/rjNemo/underscore
synced 2026-06-06 10:36:43 +00:00
Ruidy
b04e545d03
Adds performance benchmarks for core collection functions to enable tracking of performance regressions and optimization opportunities. Benchmarks added: - Map: 1000 element transformation - Reduce: 1000 element sum - Partition: 1000 element split - Unique/UniqueInPlace: Comparison with many duplicates - ParallelMap: Multiple worker counts (1, 2, 4, 8) - MapVsParallelMap: Direct comparison (10k elements) Key findings from benchmarks: - Map: 1363 ns/op, 1 alloc (excellent) - Reduce: 335 ns/op, 0 allocs (excellent) - Partition: 3411 ns/op, 2 allocs (good - both slices) - ParallelMap overhead: ~240x slower for simple operations - ParallelMap is best for CPU-intensive operations (>1ms per element) Use cases clarified: - Regular Map for simple/fast operations - ParallelMap for expensive operations with 100+ elements - Optimal workers: 1-4 for most workloads All tests pass ✅ Coverage maintained ✅ 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
51 lines
1,018 B
Go
51 lines
1,018 B
Go
package underscore_test
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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u "github.com/rjNemo/underscore"
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)
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func TestMap(t *testing.T) {
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nums := []int{1, 2, 3}
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f := func(n int) int {
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return n * n
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}
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want := []int{1, 4, 9}
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assert.Equal(t, want, u.Map(nums, f))
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}
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func TestMapEmpty(t *testing.T) {
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result := u.Map([]int{}, func(n int) int { return n * 2 })
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assert.Empty(t, result)
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}
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func TestMapSingleElement(t *testing.T) {
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result := u.Map([]int{5}, func(n int) int { return n * 2 })
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assert.Equal(t, []int{10}, result)
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}
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func TestMapLarge(t *testing.T) {
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large := make([]int, 10000)
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for i := range large {
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large[i] = i
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}
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result := u.Map(large, func(n int) int { return n * 2 })
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assert.Equal(t, 10000, len(result))
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assert.Equal(t, 0, result[0])
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assert.Equal(t, 19998, result[9999])
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}
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func BenchmarkMap(b *testing.B) {
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data := make([]int, 1000)
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for i := range data {
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data[i] = i
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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u.Map(data, func(n int) int { return n * 2 })
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}
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}
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