future-private: add change margin mode request

tests/ChangeMarginModeTest.php

@@ -0,0 +1,96 @@
+<?php
+
+use Msr\LaravelBitunixApi\Requests\ChangeMarginModeRequestContract;
+
+beforeEach(function () {
+    config([
+        'bitunix-api.future_base_uri' => 'https://fapi.bitunix.com/',
+        'bitunix-api.api_key' => 'test-api-key',
+        'bitunix-api.api_secret' => 'test-secret-key',
+        'bitunix-api.language' => 'en-US',
+    ]);
+});
+
+it('can change margin mode successfully', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    expect(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'ISOLATION'))
+        ->not->toThrow(Exception::class)
+        ->and(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'CROSS'))
+        ->not->toThrow(Exception::class);
+
+});
+
+it('validates required parameters for change margin mode', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    expect(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'ISOLATION'))
+        ->not->toThrow(Exception::class)
+        ->and(fn() => $api->changeMarginMode('ETHUSDT', 'USDT', 'CROSS'))
+        ->not->toThrow(Exception::class);
+
+});
+
+it('handles different margin modes correctly', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    $marginModes = ['ISOLATION', 'CROSS'];
+
+    foreach ($marginModes as $mode) {
+        expect(fn () => $api->changeMarginMode('BTCUSDT', 'USDT', $mode))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('validates margin mode parameter values', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    expect(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'ISOLATION'))
+        ->not->toThrow(Exception::class)
+        ->and(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'CROSS'))
+        ->not->toThrow(Exception::class);
+
+});
+
+it('can handle different trading pairs', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    $tradingPairs = ['BTCUSDT', 'ETHUSDT', 'ADAUSDT'];
+
+    foreach ($tradingPairs as $symbol) {
+        expect(fn () => $api->changeMarginMode($symbol, 'USDT', 'ISOLATION'))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('can handle different margin coins', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    $marginCoins = ['USDT', 'BTC', 'ETH'];
+
+    foreach ($marginCoins as $coin) {
+        expect(fn () => $api->changeMarginMode('BTCUSDT', $coin, 'ISOLATION'))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('validates margin mode constants', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    $validModes = ['ISOLATION', 'CROSS'];
+
+    foreach ($validModes as $mode) {
+        expect(fn () => $api->changeMarginMode('BTCUSDT', 'USDT', $mode))
+            ->not->toThrow(Exception::class);
+    }
+});
+
+it('handles edge cases for margin mode', function () {
+    $api = app(ChangeMarginModeRequestContract::class);
+
+    expect(fn() => $api->changeMarginMode('BTCUSDT', 'USDT', 'ISOLATION'))
+        ->not->toThrow(Exception::class)
+        ->and(fn() => $api->changeMarginMode('ETHUSDT', 'USDT', 'CROSS'))
+        ->not->toThrow(Exception::class);
+
+});