From b9f6e31958a071b9f0091b54c6e840ff6699dd35 Mon Sep 17 00:00:00 2001
From: Mikhalkovich Stanislav <miks@math.sfedu.ru>
Date: Wed, 29 Apr 2026 15:40:41 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9D=D0=BE=D0=B2=D1=8B=D0=B5=20=D0=BF=D1=80?=
 =?UTF-8?q?=D0=B8=D0=BC=D0=B5=D1=80=D1=8B=20-=20=D1=82=D0=B5=D1=81=D1=82?=
 =?UTF-8?q?=D1=8B=20StrToInt?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../WhatsNew/3_12/a_test_StrToInt.pas         | 96 +++++++++++++++++++
 .../WhatsNew/3_12/a_test_StrToInt2.pas        | 80 ++++++++++++++++
 2 files changed, 176 insertions(+)
 create mode 100644 InstallerSamples/WhatsNew/3_12/a_test_StrToInt.pas
 create mode 100644 InstallerSamples/WhatsNew/3_12/a_test_StrToInt2.pas

diff --git a/InstallerSamples/WhatsNew/3_12/a_test_StrToInt.pas b/InstallerSamples/WhatsNew/3_12/a_test_StrToInt.pas
new file mode 100644
index 000000000..6aacf0e6c
--- /dev/null
+++ b/InstallerSamples/WhatsNew/3_12/a_test_StrToInt.pas
@@ -0,0 +1,96 @@
+  // Исправлены ошибки в StrToInt
+  
+  procedure TestOK(s: string; expected: integer);
+  begin
+    var x := StrToInt(s);
+    if x <> expected then
+      raise new Exception($'FAIL OK: "{s}" → {x}, expected {expected}');
+  end;
+  
+  procedure TestFormat(s: string);
+  begin
+    try
+      var x := StrToInt(s);
+      raise new Exception($'FAIL Format: "{s}" → {x}, expected FormatException');
+    except
+      on e: System.FormatException do ;
+      on e: Exception do
+        raise new Exception($'FAIL Format: "{s}" → wrong exception type: {e.GetType}');
+    end;
+  end;
+  
+  procedure TestOverflow(s: string);
+  begin
+    try
+      var x := StrToInt(s);
+      raise new Exception($'FAIL Overflow: "{s}" → {x}, expected OverflowException');
+    except
+      on e: System.OverflowException do ;
+      on e: Exception do
+        raise new Exception($'FAIL Overflow: "{s}" → wrong exception type: {e.GetType}');
+    end;
+  end;
+  
+begin
+  // --- helpers ---
+  
+  // --- basic ---
+  TestOK('0', 0);
+  TestOK('5', 5);
+  TestOK('123', 123);
+  TestOK('000123', 123);
+  
+  // --- signs ---
+  TestOK('+123', 123);
+  TestOK('-123', -123);
+  TestOK('+0', 0);
+  TestOK('-0', 0);
+  
+  // --- whitespace ---
+  TestOK('   123', 123);
+  TestOK('123   ', 123);
+  TestOK('   123   ', 123);
+  TestOK('   -42   ', -42);
+  
+  // --- boundaries ---
+  TestOK('2147483647', 2147483647);
+  TestOK('-2147483648', -2147483648);
+  
+  // --- near boundaries ---
+  TestOK('2147483646', 2147483646);
+  TestOK('-2147483647', -2147483647);
+  
+  // --- overflow ---
+  TestOverflow('2147483648');
+  TestOverflow('2147483649');
+  TestOverflow('-2147483649');
+  TestOverflow('-9999999999');
+  TestOverflow('9999999999');
+  
+  // --- format errors ---
+  TestFormat('');
+  TestFormat('   ');
+  TestFormat('+');
+  TestFormat('-');
+  TestFormat('abc');
+  TestFormat('12a');
+  TestFormat('a12');
+  TestFormat('++1');
+  TestFormat('--1');
+  TestFormat('+-1');
+  
+  // --- trailing garbage ---
+  TestFormat('123abc');
+  TestFormat('123  abc');
+  
+  // --- internal spaces ---
+  TestFormat('1 23');
+  TestFormat('- 123');
+  
+  // --- edge tricky ---
+  TestOK('0000000000', 0);
+  TestOK('0000000001', 1);
+  TestFormat('  + 1');
+  
+  Println('All tests passed');
+end.
\ No newline at end of file
diff --git a/InstallerSamples/WhatsNew/3_12/a_test_StrToInt2.pas b/InstallerSamples/WhatsNew/3_12/a_test_StrToInt2.pas
new file mode 100644
index 000000000..e2e5683c6
--- /dev/null
+++ b/InstallerSamples/WhatsNew/3_12/a_test_StrToInt2.pas
@@ -0,0 +1,80 @@
+// Сравнение StrToInt с Int32.Parse
+
+begin
+  var tests := [
+    // --- OK ---
+    '0', '5', '123', '000123',
+    '+123', '-123', '+0', '-0',
+    '   123', '123   ', '   123   ', '   -42   ',
+    '2147483647', '-2147483648',
+    '2147483646', '-2147483647',
+    '0000000000', '0000000001',
+    
+    // --- Overflow ---
+    '2147483648', '2147483649',
+    '-2147483649', '-9999999999', '9999999999',
+    
+    // --- Format ---
+    '', '   ', '+', '-',
+    'abc', '12a', 'a12',
+    '++1', '--1', '+-1',
+    '123abc', '123  abc',
+    '1 23', '- 123', '  + 1'
+  ];
+  
+  foreach var s in tests do
+  begin
+    var ok1 := true;
+    var ok2 := true;
+    
+    var r1 := 0;
+    var r2 := 0;
+    
+    var e1: Exception := nil;
+    var e2: Exception := nil;
+    
+    // --- StrToInt ---
+    try
+      r1 := StrToInt(s);
+    except
+      on e: Exception do
+      begin
+        ok1 := false;
+        e1 := e;
+      end;
+    end;
+    
+    // --- Int32.Parse ---
+    try
+      r2 := System.Int32.Parse(s);
+    except
+      on e: Exception do
+      begin
+        ok2 := false;
+        e2 := e;
+      end;
+    end;
+    
+    // --- сравнение ---
+    
+    if ok1 and ok2 then
+    begin
+      if r1 <> r2 then
+        raise new Exception($'FAIL value: "{s}" → {r1} vs {r2}');
+    end
+    else if (not ok1) and (not ok2) then
+    begin
+      if e1.GetType <> e2.GetType then
+        raise new Exception($'FAIL exception: "{s}" → {e1.GetType} vs {e2.GetType}');
+    end
+    else
+    begin
+      if ok1 then
+        raise new Exception($'FAIL mismatch: "{s}" → StrToInt={r1}, Parse throws {e2.GetType}')
+      else
+        raise new Exception($'FAIL mismatch: "{s}" → StrToInt throws {e1.GetType}, Parse={r2}');
+    end;
+  end;
+  
+  Println('All tests matched Int32.Parse');
+end.
\ No newline at end of file