Detect method name case changes

Author: emmetog

src/PHPSemVerChecker/Comparator/Signature.php

@@ -22,11 +22,28 @@ public static function analyze(FunctionLike $functionA, FunctionLike $functionB)
 			'parameter_default_value_changed' => false,
 		];
 
+		$changes = self::detectFunctionNameChanges($changes, $functionA, $functionB);
 		$changes = self::detectParameterChanges($changes, $functionA, $functionB);
 
 		return $changes;
 	}
 
+	private static function detectFunctionNameChanges($changes, FunctionLike $functionA, FunctionLike $functionB)
+	{
+		if ($functionA->name != $functionB->name) {
+
+			if (strtolower($functionA->name) == strtolower($functionB->name)) {
+				$changes['function_renamed_case_only'] = true;
+			} else {
+				$changes['function_renamed'] = true;
+			}
+
+			return $changes;
+		}
+
+		return $changes;
+	}
+
 	private static function detectParameterChanges($changes, FunctionLike $functionA, FunctionLike $functionB)
 	{
 		$parametersA = $functionA->getParams();

tests/PHPSemVerChecker/Comparator/SignatureTest.php

@@ -97,4 +97,70 @@ public function testAddedParameters()
 
 		$this->assertEquals($expectedResult, $result);
 	}
+
+	public function testMethodRenamed()
+	{
+		$signature1 = new ClassMethod('testMethod1', [
+			'params' => [
+				new Param('testParameter'),
+			],
+		]);
+
+
+		$signature2 = new ClassMethod('testMethodRenamed', [
+			'params' => [
+				new Param('testParameter'),
+			],
+		]);
+
+		$result = Signature::analyze($signature1, $signature2);
+
+		$expectedResult = [
+			'function_renamed' => true,
+			'function_renamed_case_only' => false,
+			'parameter_added' => false,
+			'parameter_removed' => false,
+			'parameter_renamed' => false,
+			'parameter_typing_added' => false,
+			'parameter_typing_removed' => false,
+			'parameter_default_added' => false,
+			'parameter_default_removed' => false,
+			'parameter_default_value_changed' => false,
+		];
+
+		$this->assertEquals($expectedResult, $result);
+	}
+
+	public function testMethodRenamedCaseOnly()
+	{
+		$signature1 = new ClassMethod('testMethodOne', [
+			'params' => [
+				new Param('testParameter'),
+			],
+		]);
+
+
+		$signature2 = new ClassMethod('testmethodone', [
+			'params' => [
+				new Param('testParameter'),
+			],
+		]);
+
+		$result = Signature::analyze($signature1, $signature2);
+
+		$expectedResult = [
+			'function_renamed' => false,
+			'function_renamed_case_only' => true,
+			'parameter_added' => false,
+			'parameter_removed' => false,
+			'parameter_renamed' => false,
+			'parameter_typing_added' => false,
+			'parameter_typing_removed' => false,
+			'parameter_default_added' => false,
+			'parameter_default_removed' => false,
+			'parameter_default_value_changed' => false,
+		];
+
+		$this->assertEquals($expectedResult, $result);
+	}
 }