Commit cd7809e

@@ -0,0 +1,80 @@
+package x
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTypes(t *testing.T) {
+	t.Run("Zero", func(t *testing.T) {
+		t.Run("returns nil", func(t *testing.T) {
+			assert.Nil(t, Zero[[]string]())
+			assert.Nil(t, Zero[*http.Client]())
+		})
+
+		t.Run("returns 0", func(t *testing.T) {
+			assert.Zero(t, Zero[int]())
+		})
+
+		t.Run("returns ''", func(t *testing.T) {
+			assert.Equal(t, "", Zero[string]())
+		})
+
+		t.Run("returns false", func(t *testing.T) {
+			assert.False(t, Zero[bool]())
+		})
+	})
+
+	t.Run("Default", func(t *testing.T) {
+		t.Run("returns nil", func(t *testing.T) {
+			result := Default[*http.Client]()
+
+			assert.NotNil(t, result)
+			assert.True(t, IsPtr(result))
+		})
+
+		t.Run("returns 0", func(t *testing.T) {
+			assert.Equal(t, 0, Default[int]())
+		})
+
+		t.Run("returns ''", func(t *testing.T) {
+			assert.Equal(t, "", Default[string]())
+		})
+
+		t.Run("returns false", func(t *testing.T) {
+			assert.False(t, Default[bool]())
+		})
+
+		t.Run("returns an empty slice", func(t *testing.T) {
+			assert.Equal(t, 0, len(Default[[]string]()))
+		})
+	})
+
+	t.Run("IsSlice", func(t *testing.T) {
+		t.Run("returns true", func(t *testing.T) {
+			assert.True(t, IsSlice(Default[[]string]()))
+		})
+
+		t.Run("returns false", func(t *testing.T) {
+			assert.False(t, IsSlice(""))
+			assert.False(t, IsSlice[string](""))
+		})
+	})
+
+	t.Run("IsPtr", func(t *testing.T) {
+		t.Run("returns true", func(t *testing.T) {
+			assert.True(t, IsPtr[*http.Client](&http.Client{}))
+			assert.True(t, IsPtr[*http.Client](nil))
+		})
+
+		t.Run("returns false", func(t *testing.T) {
+			assert.False(t, IsPtr[http.Client](http.Client{}))
+			assert.False(t, IsPtr[int](0))
+			assert.False(t, IsPtr[string](""))
+			assert.False(t, IsPtr[bool](true))
+			assert.False(t, IsPtr[[]string]([]string{}))
+		})
+	})
+}