BCFile::findStartOfStatement(): sync in new tests from upstream

Refs:
* squizlabs/PHP_CodeSniffer@ef80e53
* squizlabs/PHP_CodeSniffer@97f7898
* squizlabs/PHP_CodeSniffer@ae4f33b
* squizlabs/PHP_CodeSniffer@faff2f0
* squizlabs/PHP_CodeSniffer@bffe7a5
* squizlabs/PHP_CodeSniffer@3540a5d

Co-authored-by: Greg Sherwood <gsherwood@squiz.net>

Tests/BackCompat/BCFile/FindStartOfStatementTest.inc

@@ -1,5 +1,136 @@
 <?php
 
+/*
+ * PHPCS native tests.
+ */
+
+/* testSimpleAssignment */
+$a = false;
+
+/* testFunctionCall */
+$a = doSomething();
+
+/* testFunctionCallArgument */
+$a = doSomething($a, $b);
+
+/* testControlStructure */
+while(true) {}
+$a = 1;
+
+/* testClosureAssignment */
+$a = function($b=false;){};
+
+/* testHeredocFunctionArg */
+myFunction(<<<END
+Foo
+END
+, 'bar');
+
+switch ($a) {
+    case 1: {break;}
+    case 2: $foo = true; break;
+    default: {break;}
+    /* testSwitch */
+}
+
+/* testStatementAsArrayValue */
+$a = [new Datetime];
+$a = array(new Datetime);
+$a = ['a' => $foo + $bar, 'b' => true];
+
+/* testUseGroup */
+use Vendor\Package\{ClassA as A, ClassB, ClassC as C};
+
+$a = [
+    /* testArrowFunctionArrayValue */
+    'a' => fn() => return 1,
+    'b' => fn() => return 1,
+];
+
+/* testStaticArrowFunction */
+static fn ($a) => $a;
+
+/* testArrowFunctionReturnValue */
+fn(): array => [a($a, $b)];
+
+/* testArrowFunctionAsArgument */
+$foo = foo(
+    fn() => bar()
+);
+
+/* testArrowFunctionWithArrayAsArgument */
+$foo = foo(
+    fn() => [$row[0], $row[3]]
+);
+
+$match = match ($a) {
+    /* testMatchCase */
+    1 => 'foo',
+    /* testMatchDefault */
+    default => 'bar'
+};
+
+$match = match ($a) {
+    /* testMatchMultipleCase */
+    1, 2, => $a * $b,
+    /* testMatchDefaultComma */
+    default, => 'something'
+};
+
+match ($pressedKey) {
+    /* testMatchFunctionCall */
+    Key::RETURN_ => save($value, $user)
+};
+
+$result = match (true) {
+    /* testMatchFunctionCallArm */
+    str_contains($text, 'Welcome') || str_contains($text, 'Hello') => 'en',
+    str_contains($text, 'Bienvenue') || str_contains($text, 'Bonjour') => 'fr',
+    default => 'pl'
+};
+
+/* testMatchClosure */
+$result = match ($key) {
+    1 => function($a, $b) {},
+    2 => function($b, $c) {},
+};
+
+/* testMatchArray */
+$result = match ($key) {
+    1 => [1,2,3],
+    2 => [1 => one($a, $b), 2 => two($b, $c)],
+    3 => [],
+};
+
+/* testNestedMatch */
+$result = match ($key) {
+    1 => match ($key) {
+        1 => 'one',
+        2 => 'two',
+    },
+    2 => match ($key) {
+        1 => 'two',
+        2 => 'one',
+    },
+};
+
+return 0;
+
+/* testOpenTag */
+?>
+<h1>Test</h1>
+<?php echo '<h2>', foo(), '</h2>';
+
+/* testOpenTagWithEcho */
+?>
+<h1>Test</h1>
+<?= '<h2>', foo(), '</h2>';
+
+?><?php
+/*
+ * PHPCSUtils native extra tests.
+ */
+
 $value = [
     /* testPrecededByArrowFunctionInArray - Expected */
     Url::make('View Song', fn($song) => $song->url())