add tests for edge cases

Author: LamentXU123

ext/readline/tests/readline_cli_multiline_states.phpt

@@ -15,15 +15,15 @@ $proc = proc_open("$php $ini -a", $descriptorspec, $pipes);
 
 fwrite($pipes[0], "\n");
 fwrite($pipes[0], "# comment without ini assignment\n");
-fwrite($pipes[0], "echo 'single\n';\n");
-fwrite($pipes[0], "echo \"double\n\";\n");
+fwrite($pipes[0], "echo 'single \\\\ escape\n';\n");
+fwrite($pipes[0], "echo \"double \\\\ escape\n\";\n");
 fwrite($pipes[0], "echo strtoupper(\n\"paren\"\n);\n");
 fwrite($pipes[0], "if (true) {\necho \"block\n\";\n}\n");
+fwrite($pipes[0], "// line comment\n");
 fwrite($pipes[0], "/*\n*/\necho \"comment\n\";\n");
 fwrite($pipes[0], "#[AllowDynamicProperties]\nclass ReadlineCliCoverageClass {}\n");
 fwrite($pipes[0], "echo \"attribute\n\";\n");
-fwrite($pipes[0], "?>outside-<?php\n");
-fwrite($pipes[0], "echo \"inside\n\";\n");
+fwrite($pipes[0], "if (true) ?>outside-\n<?php\n{\necho \"inside\n\";\n}\n");
 fwrite($pipes[0], "quit\n");
 fclose($pipes[0]);
 proc_close($proc);

ext/readline/tests/readline_cli_prompt.phpt

@@ -11,7 +11,7 @@ if (!function_exists('proc_open')) die('skip proc_open() not available');
 <?php
 $php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
 $ini = getenv('TEST_PHP_EXTRA_ARGS');
-$prompt = 'pre\\\\-\n-\t-\e-\v-\b-\>-\`-\q-' . "\xC3\xA9" . '-`echo "dyn";`-x ';
+$prompt = 'pre\\\\-\n-\t-\e-\v-\b-\>-\`-\q-' . "\xC3\xA9\xC3\xA9" . '-`echo "dyn";`-x ';
 $descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
 $proc = proc_open("$php $ini -d " . escapeshellarg("cli.prompt=$prompt") . " -a", $descriptorspec, $pipes);
 fwrite($pipes[0], "if (true) {\n");