feat(ads/seo/release): v1.2.0 with live Google Ads, isolated ad profile, ads.txt, and SEO/AEO/GEO optimization

tests/Paca.Tests/Core/BandwidthRateLimiterGateTests.cs

@@ -0,0 +1,52 @@
+using System;
+using Paca.Mobile.Core;
+using Xunit;
+
+namespace Paca.Tests.Core;
+
+public class BandwidthRateLimiterGateTests
+{
+    [Fact]
+    public void Gate277_BandwidthRateLimiter_UnlimitedPreset_AllowsFullSpeed()
+    {
+        var limiter = new BandwidthRateLimiter(BandwidthLimitPreset.Unlimited);
+
+        var delay = limiter.ComputeThrottleDelayMs(chunkBytes: 10_000_000, elapsedMs: 10);
+        Assert.Equal(0, delay);
+    }
+
+    [Fact]
+    public void Gate278_BandwidthRateLimiter_TokenBucket_EnforcesByteCap()
+    {
+        // 1 MB/s = 1,000,000 bytes/sec
+        var limiter = new BandwidthRateLimiter(bytesPerSecond: 1_000_000);
+
+        // Downloaded 1MB in 200ms -> should throttle ~800ms
+        var delay = limiter.ComputeThrottleDelayMs(chunkBytes: 1_000_000, elapsedMs: 200);
+        Assert.InRange(delay, 750, 850);
+    }
+
+    [Fact]
+    public void Gate279_BandwidthRateLimiter_Presets_FormatLabelsCleanly()
+    {
+        Assert.Equal("무제한", BandwidthRateLimiter.GetPresetLabel(BandwidthLimitPreset.Unlimited));
+        Assert.Equal("10 MB/s (고속)", BandwidthRateLimiter.GetPresetLabel(BandwidthLimitPreset.Fast10MB));
+        Assert.Equal("5 MB/s (일반)", BandwidthRateLimiter.GetPresetLabel(BandwidthLimitPreset.Medium5MB));
+        Assert.Equal("1 MB/s (절약)", BandwidthRateLimiter.GetPresetLabel(BandwidthLimitPreset.Low1MB));
+    }
+
+    [Fact]
+    public void Gate280_BandwidthRateLimiter_DynamicRateChange_TakesEffectImmediately()
+    {
+        var limiter = new BandwidthRateLimiter(bytesPerSecond: 1_000_000);
+        Assert.Equal(1_000_000, limiter.BytesPerSecond);
+
+        // Update mid-stream
+        limiter.SetRate(5_000_000);
+        Assert.Equal(5_000_000, limiter.BytesPerSecond);
+
+        // Now 1MB at 5MB/s expects 200ms total time, elapsed 100ms -> delay ~100ms
+        var delay = limiter.ComputeThrottleDelayMs(chunkBytes: 1_000_000, elapsedMs: 100);
+        Assert.InRange(delay, 80, 120);
+    }
+}