Fix wolfSSH_RealPath tests

Author: yosuke-wolfssl

tests/api.c

@@ -1514,13 +1514,19 @@ struct RealPathTestCase realPathDefault[] = {
         "/C:/Users/fred/Documents/junk.txt" },
     { "/C:\\Users\\fred/Documents\\junk.txt",
         "/C:/Users/fred/Documents/junk.txt" },
+    /* Root-preservation / path-traversal prevention */
+    { "/../etc/passwd", "/etc/passwd" },
+    { "/../../../etc/passwd", "/etc/passwd" },
+    { "/C:/../../etc/passwd", "/etc/passwd" },
 };
 
 struct RealPathTestCase realPathNull[] = {
     { ".", "/" },
     { "", "/" },
     { "..", "/" },
     { "../barney", "/barney" },
+    { "/../etc/passwd", "/etc/passwd" },
+    { "/../../../etc/passwd", "/etc/passwd" },
 };
 
 static void DoRealPathTestCase(const char* path, struct RealPathTestCase* tc)
@@ -1534,14 +1540,8 @@ static void DoRealPathTestCase(const char* path, struct RealPathTestCase* tc)
     WMEMSET(checkPath, 0, sizeof checkPath);
     err = wolfSSH_RealPath(path, testPath,
             checkPath, sizeof checkPath);
-    if (err || WSTRCMP(tc->exp, checkPath) != 0) {
-        fprintf(stderr, "RealPath failure (%d)\n"
-                        "    defaultPath: %s\n"
-                        "          input: %s\n"
-                        "       expected: %s\n"
-                        "         output: %s\n", err,
-                        path, tc->in, tc->exp, checkPath);
-    }
+    AssertIntEQ(err, WS_SUCCESS);
+    AssertStrEQ(tc->exp, checkPath);
 }
 
 
@@ -1571,14 +1571,7 @@ static void DoRealPathTestFailCase(struct RealPathTestFailCase* tc)
     WMEMSET(checkPath, 0, sizeof checkPath);
     err = wolfSSH_RealPath(tc->defaultPath, testPath,
             checkPath, tc->checkPathSz);
-    if (err != tc->expErr) {
-        fprintf(stderr, "RealPath fail check failure (%d)\n"
-                        "    defaultPath: %s\n"
-                        "          input: %s\n"
-                        "    checkPathSz: %u\n"
-                        "       expected: %d\n", err,
-                        tc->defaultPath, tc->in, tc->checkPathSz, tc->expErr);
-    }
+    AssertIntEQ(err, tc->expErr);
 }