Adding widechar unit test

Author: artemdinaburg

test/ghidra/widechar.c

@@ -0,0 +1,39 @@
+// UNSUPPORTED: system-windows
+// RUN: %cc-x86_64 %s -g -c -o %t.o
+// RUN: %decompile-headless --input %t.o --function widechar_test --output %t %ci_output_folder
+// RUN: %file-check -vv --check-prefix=DECOMPILES %s --input-file %t
+// DECOMPILES: "name":"{{_?widechar_test}}"
+
+// RUN: %decompile-headless --input %t.o --output %t %ci_output_folder
+// RUN: %file-check -vv --check-prefix=DECOMPILEA %s --input-file %t
+// DECOMPILEA: "arch":"{{.*}}","format":"{{.*}}","functions":
+// DECOMPILEA-SAME: "name":"{{_?widechar_test}}"
+// DECOMPILEA-SAME: "name":"{{_?main}}"
+
+// RUN: %decompile-headless --input %t.o --list-functions --output %t %ci_output_folder
+// RUN: %file-check -vv --check-prefix=LISTFNS %s --input-file %t
+// LISTFNS: "program":"{{.*}}","functions":
+// LISTFNS-SAME: "name":"{{_?widechar_test}}"
+// LISTFNS-SAME: "name":"{{_?main}}"
+
+#include <stdio.h>
+#include <wchar.h>
+#include <locale.h>
+
+int widechar_test() {
+    // Set the locale to the user's preferred locale
+    setlocale(LC_ALL, "");
+
+    // Declare and initialize a wide string (wide character array)
+    wchar_t wide_str[] = L"Hello, 世界!"; // "Hello, World!" in Chinese
+    // Print the wide string
+    wprintf(L"%ls\n", wide_str);
+    // Print a wide character
+    wchar_t wide_char = L'😊'; // A smiley emoji
+    wprintf(L"Wide character: %lc\n", wide_char);
+    return 0;
+}
+
+int main(void) {
+    return widechar_test();
+}