Added assembly size regression testing

Author: radekdoulik

ApkDescription.cs

@@ -206,6 +206,11 @@ public void Compare (ApkDescription other)
 				if (!AddToDifference (diff.Key, diff.Value, out entryDiff))
 					continue;
 
+				if (Program.AssemblyRegressionThreshold != 0 && entryDiff is AssemblyDiff && diff.Value > Program.AssemblyRegressionThreshold) {
+					Program.Error ($"Assembly size differs more than {Program.AssemblyRegressionThreshold} bytes.");
+					Program.RegressionFlag = true;
+				}
+
 				if (comparingApks && !single)
 					CompareEntries (new KeyValuePair<string, FileProperties> (diff.Key, Entries [diff.Key]), new KeyValuePair<string, FileProperties> (diff.Key, other.Entries [diff.Key]), other, entryDiff);
 			}

Program.cs

@@ -14,6 +14,7 @@ class Program {
 
 		public static long AssemblyRegressionThreshold;
 		public static long ApkRegressionThreshold;
+		public static bool RegressionFlag;
 
 		public static void Main (string [] args)
 		{
@@ -28,9 +29,14 @@ public static void Main (string [] args)
 
 				if (ApkRegressionThreshold != 0 && (desc2.PackageSize - desc1.PackageSize) > ApkRegressionThreshold) {
 					Error ($"PackageSize differ more than {ApkRegressionThreshold} bytes. apk1 size: {desc1.PackageSize} bytes, apk2 size: {desc2.PackageSize} bytes.");
-					Environment.Exit (3);
+					RegressionFlag = true;
 				}
 			}
+
+			if (RegressionFlag) {
+				Error ("Size regression occured, test failed.");
+				Environment.Exit (3);
+			}
 		}
 
 		static (string, string) ProcessArguments (string [] args)
@@ -53,6 +59,9 @@ public static void Main (string [] args)
 				{ "test-apk-size-regression=",
 					"Check whether apk size increased more than {BYTES}",
 				  v => ApkRegressionThreshold = long.Parse (v) },
+				{ "test-assembly-size-regression=",
+					"Check whether any assembly size increased more than {BYTES}",
+				  v => AssemblyRegressionThreshold = long.Parse (v) },
 				{ "s|save-descriptions",
 					"Save .apkdesc files next to the apk package(s)",
 				  v => SaveDescriptions = true },