Suppress exceptions with @ or @<class_list>

Author: Girgias

Zend/tests/silence_operator/constructor_throwing.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Silencing a new object instance
+--FILE--
+<?php
+
+class A {
+    public function __construct() {
+        throw new Exception();
+    }
+}
+
+$var = @new A();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/empty_exception_list.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Suppression operator ParseError with empty class list
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+$var = @<>test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECTF--
+Parse error: syntax error, unexpected token ">" in %s on line 8

Zend/tests/silence_operator/exception_in_function_call.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Silence exception with @ operator
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+$var = @test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/foreach.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Use of @ before foreach value to iterator upon
+--FILE--
+<?php
+
+function foo() {
+    throw new Exception();
+}
+
+foreach (@foo() as $val) {
+    var_dump($val);
+}
+
+echo "Done\n";
+?>
+--EXPECTF--
+Warning: foreach() argument must be of type array|object, null given in %s on line %d
+Done

Zend/tests/silence_operator/in_try_catch_diagnostic.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Use of @ in try catch must not fail when a diagnostic is emitted
+--FILE--
+<?php
+
+try {
+    $var = @$non_existent;
+} catch (\Throwable $e) {
+    echo $e::class, \PHP_EOL;
+}
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/in_try_catch_exception.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Use of @ in try catch must not fail when an exception is thrown
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+try {
+    $var = @test1();
+} catch (\Throwable $e) {
+    echo $e::class, \PHP_EOL;
+}
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/internal_function_arg_diagnostic.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Silencing an internal function argument emitting a diagnostic
+--FILE--
+<?php
+
+var_dump(@$non_existent);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/internal_function_arg_exception.phpt

@@ -0,0 +1,17 @@
+--TEST--
+Silencing an internal function argument throwing an Exception
+--FILE--
+<?php
+
+function foo() {
+    throw new Exception();
+    return 1;
+}
+
+var_dump(@foo());
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/listed_exceptions_in.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Suppression operator with class list, single
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+$var = @<Exception>test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/listed_exceptions_not_in.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Suppression operator should only suppress listed Exceptions
+--FILE--
+<?php
+
+function test1() {
+    throw new Error();
+    return true;
+}
+
+$var = @<Exception>test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECTF--
+Fatal error: Uncaught Error in %s:4
+Stack trace:
+#0 %s(8): test1()
+#1 {main}
+  thrown in %s on line 4

Zend/tests/silence_operator/nested_silence_in_call.phpt

@@ -0,0 +1,25 @@
+--TEST--
+Nested at in call must not fail
+--FILE--
+<?php
+
+function foo($arg) {
+}
+
+function bar() {
+    throw new Exception("test");
+}
+
+try {
+    $var = @foo(@bar());
+} catch (\Throwable $e) {
+    echo $e::class, \PHP_EOL;
+}
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/silence_function_many_ops.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Silence function with ops before exception with @ operator
+--FILE--
+<?php
+
+function test1() {
+    $b = strlen("Hello");
+    $a = 5;
+    throw new Exception();
+    $a += 25;
+    return true;
+}
+
+$var = @test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/silence_function_nested.phpt

@@ -0,0 +1,24 @@
+--TEST--
+Silence nested function call which throws with @ operator
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+function test2($a) {
+    $a += 6;
+    return test1();
+}
+
+$var = @test2();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/silence_multiple_use.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Multiple use of @ operator must not fail to suppress diagnostic
+--FILE--
+<?php
+
+$var = @@$non_existent;
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/silence_multiple_use_exception.phpt

@@ -0,0 +1,19 @@
+--TEST--
+Multiple use of @ operator must not fail to suppress diagnostic
+--FILE--
+<?php
+
+function test1() {
+    throw new Exception();
+    return true;
+}
+
+$var = @@test1();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/throw_expression.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Silence throw with @ operator
+--FILE--
+<?php
+
+$var = @throw new Exception();
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/undef_var.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Silence undef variable with @ operator
+--FILE--
+<?php
+
+$var = @$non_existent;
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/user_function_arg_diagnostic.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Silencing a userland function argument emitting a diagnostic
+--FILE--
+<?php
+
+function test1($arg) {
+    return $arg;
+}
+
+$var = test1(@$non_existent);
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done

Zend/tests/silence_operator/user_function_arg_exception.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Silencing a userland function argument throwing an Exception
+--FILE--
+<?php
+
+function test1($arg) {
+    return $arg;
+}
+
+function foo() {
+    throw new Exception();
+    return 1;
+}
+
+$var = test1(@foo());
+
+var_dump($var);
+
+echo "Done\n";
+?>
+--EXPECT--
+NULL
+Done