mirror of
https://github.com/rjNemo/underscore
synced 2026-06-06 02:26:42 +00:00
Ruidy
40ac16261e
BREAKING CHANGE: Drop function now correctly drops first N elements
instead of removing element at specific index.
Changes:
- Renamed old Drop behavior to RemoveAt function
- Implemented correct Drop semantics (drop first N elements)
- Added comprehensive tests for both functions
Drop (NEW behavior):
- Drop([]int{1,2,3,4,5}, 2) → [3,4,5] (drops first 2 elements)
- Returns empty slice if n >= len(values)
- Returns original slice if n <= 0
RemoveAt (OLD Drop behavior):
- RemoveAt([]int{1,2,3,4,5}, 2) → [1,2,4,5] (removes index 2)
- Returns original slice if index out of bounds
- Pre-allocates with capacity len(values)-1
Tests added:
- Drop: 5 tests (basic, none, all, empty, single)
- RemoveAt: 6 tests (basic, first, last, bounds, empty, single)
Documentation updated:
- README.md: Added RemoveAt to function list
- CLAUDE.md: Marked Drop semantics as fixed
- ACTION_PLAN.md: Updated completion status
Migration guide:
- Old: Drop(slice, index) → New: RemoveAt(slice, index)
- New Drop usage: Drop(slice, n) drops first n elements
Coverage: 98.8% (maintained)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
42 lines
767 B
Go
42 lines
767 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 TestDrop(t *testing.T) {
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nums := []int{1, 2, 3, 4, 5}
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want := []int{3, 4, 5}
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assert.Equal(t, want, u.Drop(nums, 2))
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}
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func TestDropNone(t *testing.T) {
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nums := []int{1, 2, 3, 4, 5}
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assert.Equal(t, nums, u.Drop(nums, 0))
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assert.Equal(t, nums, u.Drop(nums, -1))
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}
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func TestDropAll(t *testing.T) {
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nums := []int{1, 2, 3, 4, 5}
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assert.Empty(t, u.Drop(nums, 5))
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assert.Empty(t, u.Drop(nums, 10))
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}
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func TestDropEmpty(t *testing.T) {
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result := u.Drop([]int{}, 5)
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assert.Empty(t, result)
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}
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func TestDropSingleElement(t *testing.T) {
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nums := []int{42}
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assert.Equal(t, nums, u.Drop(nums, 0))
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assert.Empty(t, u.Drop(nums, 1))
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}
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