Add tests

Author: VincentLanglet

tests/PHPStan/Analyser/nsrt/bug-12312.php

@@ -17,6 +17,39 @@ public function sayLowercase(string $s): void
 assertType('lowercase-string', $s);
 }
 
+/**
+ * @param lowercase-string $s
+ */
+public function sayLowercase2(string $s): void
+{
+if ('' != $s) {
+assertType('lowercase-string&non-empty-string', $s);
+}
+assertType('lowercase-string', $s);
+}
+
+/**
+ * @param lowercase-string $s
+ */
+public function sayLowercase3(string $s): void
+{
+if ($s != '0') {
+assertType('lowercase-string&non-falsy-string', $s);
+}
+assertType('lowercase-string', $s);
+}
+
+/**
+ * @param lowercase-string $s
+ */
+public function sayLowercase4(string $s): void
+{
+if ('0' != $s) {
+assertType('lowercase-string&non-falsy-string', $s);
+}
+assertType('lowercase-string', $s);
+}
+
 /**
  * @param uppercase-string $s
  */
@@ -28,6 +61,39 @@ public function sayUppercase(string $s): void
 assertType('uppercase-string', $s);
 }
 
+/**
+ * @param uppercase-string $s
+ */
+public function sayUppercase2(string $s): void
+{
+if ('' != $s) {
+assertType('non-empty-string&uppercase-string', $s);
+}
+assertType('uppercase-string', $s);
+}
+
+/**
+ * @param uppercase-string $s
+ */
+public function sayUppercase3(string $s): void
+{
+if ($s != '0') {
+assertType('non-falsy-string&uppercase-string', $s);
+}
+assertType('uppercase-string', $s);
+}
+
+/**
+ * @param uppercase-string $s
+ */
+public function sayUppercase4(string $s): void
+{
+if ('0' != $s) {
+assertType('non-falsy-string&uppercase-string', $s);
+}
+assertType('uppercase-string', $s);
+}
+
 /**
  * @param lowercase-string&uppercase-string $s
  */
@@ -38,4 +104,37 @@ public function sayBoth(string $s): void
 }
 assertType('lowercase-string&uppercase-string', $s);
 }
+
+/**
+ * @param lowercase-string&uppercase-string $s
+ */
+public function sayBoth2(string $s): void
+{
+if ('' != $s) {
+assertType('lowercase-string&non-empty-string&uppercase-string', $s);
+}
+assertType('lowercase-string&uppercase-string', $s);
+}
+
+/**
+ * @param lowercase-string&uppercase-string $s
+ */
+public function sayBoth3(string $s): void
+{
+if ($s != '0') {
+assertType('lowercase-string&non-falsy-string&uppercase-string', $s);
+}
+assertType('lowercase-string&uppercase-string', $s);
+}
+
+/**
+ * @param lowercase-string&uppercase-string $s
+ */
+public function sayBoth4(string $s): void
+{
+if ('0' != $s) {
+assertType('lowercase-string&non-falsy-string&uppercase-string', $s);
+}
+assertType('lowercase-string&uppercase-string', $s);
+}
 }