basic test

3 files changed, 252 insertions, 0 deletions

diff --git a/test/.cvsignore b/test/.cvsignore
new file mode 100644
index 0000000..9daeafb
--- /dev/null
+++ b/test/.cvsignore
@@ -0,0 +1 @@
+test
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..738dd53
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,7 @@
+CC=gcc
+CFLAGS=-Wall -W
+
+all: test
+
+clean:
+	rm -f *.o test
diff --git a/test/test.c b/test/test.c
new file mode 100644
index 0000000..f302651
--- /dev/null
+++ b/test/test.c
@@ -0,0 +1,244 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+static char testfile[1024];
+static char testfile2[1024];
+static char testname[256];
+static char zerodata[4096];
+
+static void test_perror(const char *func, const char *msg)
+{
+    fprintf(stderr, "[%s] %s %s: %s\n", testname, func, msg, strerror(errno));
+}
+
+static void test_error(const char *func, const char *msg, ...)
+     __attribute__ ((format (printf, 2, 3)));
+
+static void start_test(const char *fmt, ...)
+     __attribute__ ((format (printf, 1, 2)));
+     
+static void test_error(const char *func, const char *msg, ...)
+{
+    va_list ap;
+    fprintf(stderr, "[%s] %s ", testname, func);
+    va_start(ap, msg);
+    vfprintf(stderr, msg, ap);
+    va_end(ap);
+    fprintf(stderr, "\n");
+}
+
+static void success(void)
+{
+    fprintf(stderr, "[%s] OK\n", testname);
+}
+
+static void start_test(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    vsprintf(testname, fmt, ap);
+    va_end(ap);
+}
+
+#define PERROR(msg) test_perror(__FUNCTION__, msg)
+#define ERROR(msg, args...) test_error(__FUNCTION__, msg, ##args)
+
+static int check_size(const char *path, int len)
+{
+    struct stat stbuf;
+    int res = stat(path, &stbuf);
+    if (res == -1) {
+        PERROR("stat");
+        return -1;
+    }
+    if (stbuf.st_size != len) {
+        ERROR("length %u instead of %u", (int) stbuf.st_size, (int) len);
+        return -1;
+    }
+    return 0;
+}
+
+static int check_data(const char *path, const char *data, int offset,
+                      unsigned len)
+{
+    char buf[4096];
+    int res;
+    int fd = open(path, O_RDONLY);
+    if (fd == -1) {
+        PERROR("open");
+        return -1;
+    }
+    if (lseek(fd, offset, SEEK_SET) == (off_t) -1) {
+        PERROR("lseek");
+        close(fd);
+        return -1;
+    }
+    while (len) {
+        int rdlen = len < sizeof(buf) ? len : sizeof(buf);
+        res = read(fd, buf, rdlen);
+        if (res == -1) {
+            PERROR("read");
+            close(fd);
+            return -1;
+        }
+        if (res != rdlen) {
+            ERROR("short read: %u instead of %u", res, rdlen);
+            close(fd);
+            return -1;
+        }
+        if (memcmp(buf, data, rdlen) != 0) {
+            ERROR("data mismatch");
+            close(fd);
+            return -1;
+        }
+        data += rdlen;
+        len -= rdlen;
+    }
+    res = close(fd);
+    if (res == -1) {
+        PERROR("close");
+        return -1;
+    }
+    return 0;
+}
+
+static int create_file(const char *path, const char *data, int len)
+{
+    int res;
+    int fd;
+    
+    unlink(path);
+    fd = creat(path, 0644);
+    if (fd == -1) {
+        PERROR("creat");
+        return -1;
+    }
+    res = write(fd, data, len);
+    if (res == -1) {
+        PERROR("write");
+        close(fd);
+        return -1;
+    }
+    if (res != len) {
+        ERROR("write is short: %u instead of %u", res, len);
+        close(fd);
+        return -1;
+    }
+    res = close(fd);
+    if (res == -1) {
+        PERROR("close");
+        return -1;
+    }
+    res = check_size(path, len);
+    if (res == -1)
+        return -1;
+
+    res = check_data(path, data, 0, len);
+    if (res == -1)
+        return -1;
+
+    return 0;
+}
+
+int test_truncate(int len)
+{
+    const char *data = "abcdefghijklmnopqrstuvwxyz";
+    int datalen = strlen(data); 
+    int res;
+
+    start_test("truncate(%u)", (int) len);
+    res = create_file(testfile, data, datalen);
+    if (res == -1)
+        return -1;
+    
+    res = truncate(testfile, len);
+    if (res == -1) {
+        PERROR("truncate");
+        return -1;
+    }
+    res = check_size(testfile, len);
+    if (res == -1)
+        return -1;
+    
+    if (len > 0) {
+        if (len <= datalen) {
+            res = check_data(testfile, data, 0, len);
+            if (res == -1)
+                return -1;
+        } else {
+            res = check_data(testfile, data, 0, datalen);
+            if (res == -1)
+                return -1;
+            res = check_data(testfile, zerodata, datalen, len - datalen);
+            if (res == -1)
+                return -1;
+        }
+    }
+
+    success();
+    return 0;
+}
+
+static int test_symlink(void)
+{
+    char buf[1024];
+    const char *data = "abcdefghijklmnopqrstuvwxyz";
+    int datalen = strlen(data); 
+    int linklen = strlen(testfile);
+    int res;
+
+    start_test("symlink");
+    res = create_file(testfile, data, datalen);
+    if (res == -1)
+        return -1;
+    
+    unlink(testfile2);
+    res = symlink(testfile, testfile2);
+    if (res == -1) {
+        PERROR("symlink");
+        return -1;
+    }
+    res = readlink(testfile2, buf, sizeof(buf));
+    if (res == -1) {
+        PERROR("readlink");
+        return -1;
+    }
+    if (res != linklen) {
+        ERROR("short readlink: %u instead of %u", res, linklen);
+        return -1;
+    }
+    if (memcmp(buf, testfile, linklen) != 0) {
+        ERROR("link mismatch");
+        return -1;
+    }
+
+    res = check_size(testfile2, datalen);
+    if (res == -1)
+        return -1;
+    
+    res = check_data(testfile2, data, 0, datalen);
+    if (res == -1)
+        return -1;
+
+    success();
+    return 0;
+}
+
+int main(void)
+{
+    sprintf(testfile, "/tmp/fusetest/testfile");
+    sprintf(testfile2, "/tmp/fusetest/testfile2");
+    test_symlink();
+    test_truncate(0);
+    test_truncate(10);
+    test_truncate(26);
+    test_truncate(100);
+    return 0;
+}