// Copyright [2026] [Argus]
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build unit

package test

import (
	"testing"
)

func TestStringifyPtr(t *testing.T) {
	// GIVEN: a pointer to a value.
	tests := []struct {
		name string
		ptr  any
		want string
	}{
		{name: "nil", ptr: nil, want: "<nil>"},
		{name: "int, positive", ptr: new(1), want: "1"},
		{name: "int, negative", ptr: new(-1), want: "-1"},
		{name: "string", ptr: new("hello"), want: "hello"},
		{name: "uint", ptr: new(1), want: "1"},
		{name: "bool", ptr: new(true), want: "true"},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()

			// WHEN: StringifyPtr is called.
			var result string
			switch v := tc.ptr.(type) {
			case *bool:
				result = StringifyPtr(v)
			case *int:
				result = StringifyPtr(v)
			case *string:
				result = StringifyPtr(v)
			case *uint8:
				result = StringifyPtr(v)
			case nil:
				var nilPtr *int
				result = StringifyPtr(nilPtr)
			default:
				t.Fatalf("%s\nunexpected type %T", packageName, tc.ptr)
			}

			// THEN: the result should be a string representation of the value.
			if result != tc.want {
				t.Errorf(
					"%s\nStringifyPtr() mismatch\ngot:  %q\nwant: %q",
					packageName, result, tc.want,
				)
			}
		})
	}
}
