From 51b58b1ad46c5c78af487abb7df4d3edbf9a33bc Mon Sep 17 00:00:00 2001
From: Christopher Haster <chaster@utexas.edu>
Date: Thu, 9 Mar 2017 12:03:14 -0600
Subject: [PATCH] Filesystem: Restored LocalFileSystem tests for mbed 2

---
 drivers/FileSystemLike.h                      |  2 +-
 features/unsupported/tests/mbed/file/main.cpp | 78 +++++++++++++++++++
 2 files changed, 79 insertions(+), 1 deletion(-)
 create mode 100644 features/unsupported/tests/mbed/file/main.cpp

diff --git a/drivers/FileSystemLike.h b/drivers/FileSystemLike.h
index c08b8c94eb..47ece539d9 100644
--- a/drivers/FileSystemLike.h
+++ b/drivers/FileSystemLike.h
@@ -114,7 +114,7 @@ public:
      *    0 on success or un-needed,
      *   -1 on error
      */
-    virtual int stat(const char *name, struct stat *st) = 0;
+    virtual int stat(const char *name, struct stat *st) { return -1; };
 };
 
 } // namespace mbed
diff --git a/features/unsupported/tests/mbed/file/main.cpp b/features/unsupported/tests/mbed/file/main.cpp
new file mode 100644
index 0000000000..8c85711f96
--- /dev/null
+++ b/features/unsupported/tests/mbed/file/main.cpp
@@ -0,0 +1,78 @@
+#include "test_env.h"
+#include "mbed_semihost_api.h"
+
+Serial pc(USBTX, USBRX);
+
+#define FILENAME      "/local/out.txt"
+#define TEST_STRING   "Hello World!"
+
+FILE *test_open(const char *mode) {
+    FILE *f = fopen(FILENAME, mode);
+    if (f == NULL) {
+        printf("Error opening file"NL);
+        notify_completion(false);
+    }
+    return f;
+}
+
+void test_write(FILE *f, char *str, int str_len) {
+    int n = fprintf(f, str);
+
+    if (n != str_len) {
+        printf("Error writing file"NL);
+        notify_completion(false);
+    }
+}
+
+void test_read(FILE *f, char *str, int str_len) {
+    int n = fread(str, sizeof(unsigned char), str_len, f);
+
+    if (n != str_len) {
+        printf("Error reading file"NL);
+        notify_completion(false);
+    }
+}
+
+void test_close(FILE *f) {
+    int rc = fclose(f);
+
+    if (rc != 0) {
+        printf("Error closing file"NL);
+        notify_completion(false);
+    }
+}
+
+int main() {
+    MBED_HOSTTEST_TIMEOUT(20);
+    MBED_HOSTTEST_SELECT(default_auto);
+    MBED_HOSTTEST_DESCRIPTION(Semihost file system);
+    MBED_HOSTTEST_START("MBED_A2");
+
+    pc.printf("Test the Stream class\n");
+
+    printf("connected: %s\n", (semihost_connected()) ? ("Yes") : ("No"));
+
+    char mac[16];
+    mbed_mac_address(mac);
+    printf("mac address: %02x,%02x,%02x,%02x,%02x,%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
+    LocalFileSystem local("local");
+
+    FILE *f;
+    char *str = TEST_STRING;
+    char *buffer = (char *)malloc(sizeof(unsigned char) * strlen(TEST_STRING));
+    int str_len = strlen(TEST_STRING);
+
+    // Write
+    f = test_open("w");
+    test_write(f, str, str_len);
+    test_close(f);
+
+    // Read
+    f = test_open("r");
+    test_read(f, buffer, str_len);
+    test_close(f);
+
+    // Check the two strings are equal
+    MBED_HOSTTEST_RESULT((strncmp(buffer, str, str_len) == 0));
+}