Add tests

Author: tomas-novotny

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+
+## [Unreleased](https://github.com/gravitton/x/compare/v1.0.0...master)
+
+
+## v1.0.0 (2025-10-17)
+### Added
+- Added `Heap` container implementation from proposal [#47632](https://github.com/golang/go/issues/47632)
+- Added `Queue` container implementation
+- Added `Map` function for slices
+- Added function for sorted slices
+  - `Insert`
+  - `Delete`
+  - `Contains`
+

reflect/reflect.go

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+package slices
+
+import (
+	"testing"
+
+	"github.com/gravitton/assert"
+)
+
+func TestMap(t *testing.T) {
+	si := []int{1, 2, 3}
+	s1 := Map(si, func(i int) int {
+		return i
+	})
+
+	assert.Equal(t, s1, si)
+	assert.NotSame(t, s1, si)
+
+	s2 := Map([]int{1, 2, 3}, func(i int) int {
+		return 10 + i*2
+	})
+
+	assert.Equal(t, s2, []int{12, 14, 16})
+}

slices/slices_test.go

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+package slices
+
+import (
+	"testing"
+
+	"github.com/gravitton/assert"
+)
+
+func TestInsert(t *testing.T) {
+	ss := []int{1, 3, 5}
+
+	s1 := Insert(ss, 6, false)
+	assert.NotSame(t, s1, ss)
+	assert.Equal(t, s1, []int{1, 3, 5, 6})
+
+	s2 := Insert(s1, 6, true)
+	assert.Same(t, s2, s1)
+	assert.Equal(t, s2, []int{1, 3, 5, 6})
+
+	s3 := Insert(ss, 2, false)
+	assert.Equal(t, s3, []int{1, 2, 3, 5})
+}
+
+func TestDelete(t *testing.T) {
+	ss := []int{1, 3, 5}
+
+	s1 := Delete(ss, 2)
+	assert.Same(t, s1, ss)
+	assert.Equal(t, s1, []int{1, 3, 5})
+
+	s2 := Delete(ss, 3)
+	assert.Equal(t, s2, []int{1, 5})
+}
+
+func TestContains(t *testing.T) {
+	ss := []int{1, 3, 5}
+
+	assert.True(t, Contains(ss, 3))
+	assert.False(t, Contains(ss, 2))
+}