Initial checkin of gRPC to third_party/

third_party/grpc/test/core/support/load_file_test.c

Index: third_party/grpc/test/core/support/load_file_test.c
diff --git a/third_party/grpc/test/core/support/load_file_test.c b/third_party/grpc/test/core/support/load_file_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..e6ba6174400a0c2c2f7d3406fbb4a0ac0189bc9d
--- /dev/null
+++ b/third_party/grpc/test/core/support/load_file_test.c
@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/slice.h>
+
+#include "src/core/support/load_file.h"
+#include "src/core/support/tmpfile.h"
+#include "src/core/support/string.h"
+#include "test/core/util/test_config.h"
+
+#define LOG_TEST_NAME(x) gpr_log(GPR_INFO, "%s", x)
+
+static const char prefix[] = "file_test";
+
+static void test_load_empty_file(void) {
+  FILE *tmp = NULL;
+  gpr_slice slice;
+  gpr_slice slice_with_null_term;
+  int success;
+  char *tmp_name;
+
+  LOG_TEST_NAME("test_load_empty_file");
+
+  tmp = gpr_tmpfile(prefix, &tmp_name);
+  GPR_ASSERT(tmp_name != NULL);
+  GPR_ASSERT(tmp != NULL);
+  fclose(tmp);
+
+  slice = gpr_load_file(tmp_name, 0, &success);
+  GPR_ASSERT(success == 1);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice) == 0);
+
+  slice_with_null_term = gpr_load_file(tmp_name, 1, &success);
+  GPR_ASSERT(success == 1);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice_with_null_term) == 1);
+  GPR_ASSERT(GPR_SLICE_START_PTR(slice_with_null_term)[0] == 0);
+
+  remove(tmp_name);
+  gpr_free(tmp_name);
+  gpr_slice_unref(slice);
+  gpr_slice_unref(slice_with_null_term);
+}
+
+static void test_load_failure(void) {
+  FILE *tmp = NULL;
+  gpr_slice slice;
+  int success;
+  char *tmp_name;
+
+  LOG_TEST_NAME("test_load_failure");
+
+  tmp = gpr_tmpfile(prefix, &tmp_name);
+  GPR_ASSERT(tmp_name != NULL);
+  GPR_ASSERT(tmp != NULL);
+  fclose(tmp);
+  remove(tmp_name);
+
+  slice = gpr_load_file(tmp_name, 0, &success);
+  GPR_ASSERT(success == 0);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice) == 0);
+  gpr_free(tmp_name);
+  gpr_slice_unref(slice);
+}
+
+static void test_load_small_file(void) {
+  FILE *tmp = NULL;
+  gpr_slice slice;
+  gpr_slice slice_with_null_term;
+  int success;
+  char *tmp_name;
+  const char *blah = "blah";
+
+  LOG_TEST_NAME("test_load_small_file");
+
+  tmp = gpr_tmpfile(prefix, &tmp_name);
+  GPR_ASSERT(tmp_name != NULL);
+  GPR_ASSERT(tmp != NULL);
+  GPR_ASSERT(fwrite(blah, 1, strlen(blah), tmp) == strlen(blah));
+  fclose(tmp);
+
+  slice = gpr_load_file(tmp_name, 0, &success);
+  GPR_ASSERT(success == 1);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice) == strlen(blah));
+  GPR_ASSERT(!memcmp(GPR_SLICE_START_PTR(slice), blah, strlen(blah)));
+
+  slice_with_null_term = gpr_load_file(tmp_name, 1, &success);
+  GPR_ASSERT(success == 1);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice_with_null_term) == (strlen(blah) + 1));
+  GPR_ASSERT(strcmp((const char *)GPR_SLICE_START_PTR(slice_with_null_term),
+                    blah) == 0);
+
+  remove(tmp_name);
+  gpr_free(tmp_name);
+  gpr_slice_unref(slice);
+  gpr_slice_unref(slice_with_null_term);
+}
+
+static void test_load_big_file(void) {
+  FILE *tmp = NULL;
+  gpr_slice slice;
+  int success;
+  char *tmp_name;
+  unsigned char buffer[124631];
+  unsigned char *current;
+  size_t i;
+
+  LOG_TEST_NAME("test_load_big_file");
+
+  for (i = 0; i < sizeof(buffer); i++) {
+    buffer[i] = 42;
+  }
+
+  tmp = gpr_tmpfile(prefix, &tmp_name);
+  GPR_ASSERT(tmp != NULL);
+  GPR_ASSERT(tmp_name != NULL);
+  GPR_ASSERT(fwrite(buffer, 1, sizeof(buffer), tmp) == sizeof(buffer));
+  fclose(tmp);
+
+  slice = gpr_load_file(tmp_name, 0, &success);
+  GPR_ASSERT(success == 1);
+  GPR_ASSERT(GPR_SLICE_LENGTH(slice) == sizeof(buffer));
+  current = GPR_SLICE_START_PTR(slice);
+  for (i = 0; i < sizeof(buffer); i++) {
+    GPR_ASSERT(current[i] == 42);
+  }
+
+  remove(tmp_name);
+  gpr_free(tmp_name);
+  gpr_slice_unref(slice);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  test_load_empty_file();
+  test_load_failure();
+  test_load_small_file();
+  test_load_big_file();
+  return 0;
+}