Strict BooleanType

.docs/README.md

@@ -243,8 +243,8 @@ Available data types are `scalar`, `string`, `int`, `float`, `bool` and `datetim
     - Converts value to float.
     - Accepts values which have decimals divided by comma `,` or dot `.`
 - `bool`
-    - Converts `'true'` and `'1'` to `true`
-    - and `false` and `0` to `false`
+    - Converts `'true'` to `true`
+    - and `false` to `false`
 - `datetime`
     - Converts value to DateTimeImmutable.
 - Each of the data types could return null if @RequestParameter(allowEmpty=true)

src/Mapping/Parameter/BooleanTypeMapper.php

@@ -20,11 +20,11 @@ public function normalize($value): ?bool
 			return $value;
 		}
 
-		if ($value === '1' || $value === 'true') {
+		if ($value === 'true') {
 			return true;
 		}
 
-		if ($value === '0' || $value === 'false') {
+		if ($value === 'false') {
 			return false;
 		}
 

tests/cases/Mapping/Parameter/BooleanTypeMapper.phpt

@@ -22,10 +22,8 @@ final class TestBooleanTypeMapper extends TestCase
 		Assert::same(null, $mapper->normalize(''));
 		Assert::same(true, $mapper->normalize(true));
 		Assert::same(true, $mapper->normalize('true'));
-		Assert::same(true, $mapper->normalize('1'));
 		Assert::same(false, $mapper->normalize(false));
 		Assert::same(false, $mapper->normalize('false'));
-		Assert::same(false, $mapper->normalize('0'));
 	}
 
 	public function testFail(): void
@@ -35,6 +33,14 @@ final class TestBooleanTypeMapper extends TestCase
 		Assert::exception(function () use ($mapper): void {
 			$mapper->normalize('string');
 		}, InvalidArgumentTypeException::class);
+
+		Assert::exception(function () use ($mapper): void {
+			$mapper->normalize('0');
+		}, InvalidArgumentTypeException::class);
+
+		Assert::exception(function () use ($mapper): void {
+			$mapper->normalize('1');
+		}, InvalidArgumentTypeException::class);
 	}
 
 }