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-rw-r--r--test/core/gpr/time_test.cc266
1 files changed, 266 insertions, 0 deletions
diff --git a/test/core/gpr/time_test.cc b/test/core/gpr/time_test.cc
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+++ b/test/core/gpr/time_test.cc
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+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Test of gpr time support. */
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "test/core/util/test_config.h"
+
+static void to_fp(void* arg, const char* buf, size_t len) {
+ fwrite(buf, 1, len, (FILE*)arg);
+}
+
+/* Convert gpr_intmax x to ascii base b (2..16), and write with
+ (*writer)(arg, ...), zero padding to "chars" digits). */
+static void i_to_s(intmax_t x, int base, int chars,
+ void (*writer)(void* arg, const char* buf, size_t len),
+ void* arg) {
+ char buf[64];
+ char fmt[32];
+ GPR_ASSERT(base == 16 || base == 10);
+ sprintf(fmt, "%%0%d%s", chars, base == 16 ? PRIxMAX : PRIdMAX);
+ sprintf(buf, fmt, x);
+ (*writer)(arg, buf, strlen(buf));
+}
+
+/* Convert ts to ascii, and write with (*writer)(arg, ...). */
+static void ts_to_s(gpr_timespec t,
+ void (*writer)(void* arg, const char* buf, size_t len),
+ void* arg) {
+ if (t.tv_sec < 0 && t.tv_nsec != 0) {
+ t.tv_sec++;
+ t.tv_nsec = GPR_NS_PER_SEC - t.tv_nsec;
+ }
+ i_to_s(t.tv_sec, 10, 0, writer, arg);
+ (*writer)(arg, ".", 1);
+ i_to_s(t.tv_nsec, 10, 9, writer, arg);
+}
+
+static void test_values(void) {
+ int i;
+
+ gpr_timespec x = gpr_time_0(GPR_CLOCK_REALTIME);
+ GPR_ASSERT(x.tv_sec == 0 && x.tv_nsec == 0);
+
+ x = gpr_inf_future(GPR_CLOCK_REALTIME);
+ fprintf(stderr, "far future ");
+ fflush(stderr);
+ i_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ GPR_ASSERT(x.tv_sec == INT64_MAX);
+ fprintf(stderr, "far future ");
+ fflush(stderr);
+ ts_to_s(x, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+
+ x = gpr_inf_past(GPR_CLOCK_REALTIME);
+ fprintf(stderr, "far past ");
+ fflush(stderr);
+ i_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+ GPR_ASSERT(x.tv_sec == INT64_MIN);
+ fprintf(stderr, "far past ");
+ fflush(stderr);
+ ts_to_s(x, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+
+ for (i = 1; i != 1000 * 1000 * 1000; i *= 10) {
+ x = gpr_time_from_micros(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec == i / GPR_US_PER_SEC &&
+ x.tv_nsec == (i % GPR_US_PER_SEC) * GPR_NS_PER_US);
+ x = gpr_time_from_nanos(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec == i / GPR_NS_PER_SEC &&
+ x.tv_nsec == (i % GPR_NS_PER_SEC));
+ x = gpr_time_from_millis(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec == i / GPR_MS_PER_SEC &&
+ x.tv_nsec == (i % GPR_MS_PER_SEC) * GPR_NS_PER_MS);
+ }
+
+ /* Test possible overflow in conversion of -ve values. */
+ x = gpr_time_from_micros(-(INT64_MAX - 999997), GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec < 0);
+ GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
+
+ x = gpr_time_from_nanos(-(INT64_MAX - 999999997), GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec < 0);
+ GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
+
+ x = gpr_time_from_millis(-(INT64_MAX - 997), GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec < 0);
+ GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
+
+ /* Test general -ve values. */
+ for (i = -1; i > -1000 * 1000 * 1000; i *= 7) {
+ x = gpr_time_from_micros(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec * GPR_US_PER_SEC + x.tv_nsec / GPR_NS_PER_US == i);
+ x = gpr_time_from_nanos(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec * GPR_NS_PER_SEC + x.tv_nsec == i);
+ x = gpr_time_from_millis(i, GPR_TIMESPAN);
+ GPR_ASSERT(x.tv_sec * GPR_MS_PER_SEC + x.tv_nsec / GPR_NS_PER_MS == i);
+ }
+}
+
+static void test_add_sub(void) {
+ int i;
+ int j;
+ int k;
+ /* Basic addition and subtraction. */
+ for (i = -100; i <= 100; i++) {
+ for (j = -100; j <= 100; j++) {
+ for (k = 1; k <= 10000000; k *= 10) {
+ int sum = i + j;
+ int diff = i - j;
+ gpr_timespec it = gpr_time_from_micros(i * k, GPR_TIMESPAN);
+ gpr_timespec jt = gpr_time_from_micros(j * k, GPR_TIMESPAN);
+ gpr_timespec sumt = gpr_time_add(it, jt);
+ gpr_timespec difft = gpr_time_sub(it, jt);
+ if (gpr_time_cmp(gpr_time_from_micros(sum * k, GPR_TIMESPAN), sumt) !=
+ 0) {
+ fprintf(stderr, "i %d j %d sum %d sumt ", i, j, sum);
+ fflush(stderr);
+ ts_to_s(sumt, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+ GPR_ASSERT(0);
+ }
+ if (gpr_time_cmp(gpr_time_from_micros(diff * k, GPR_TIMESPAN), difft) !=
+ 0) {
+ fprintf(stderr, "i %d j %d diff %d diff ", i, j, diff);
+ fflush(stderr);
+ ts_to_s(sumt, &to_fp, stderr);
+ fprintf(stderr, "\n");
+ fflush(stderr);
+ GPR_ASSERT(0);
+ }
+ }
+ }
+ }
+}
+
+static void test_overflow(void) {
+ /* overflow */
+ gpr_timespec x = gpr_time_from_micros(1, GPR_TIMESPAN);
+ do {
+ x = gpr_time_add(x, x);
+ } while (gpr_time_cmp(x, gpr_inf_future(GPR_TIMESPAN)) < 0);
+ GPR_ASSERT(gpr_time_cmp(x, gpr_inf_future(GPR_TIMESPAN)) == 0);
+ x = gpr_time_from_micros(-1, GPR_TIMESPAN);
+ do {
+ x = gpr_time_add(x, x);
+ } while (gpr_time_cmp(x, gpr_inf_past(GPR_TIMESPAN)) > 0);
+ GPR_ASSERT(gpr_time_cmp(x, gpr_inf_past(GPR_TIMESPAN)) == 0);
+}
+
+static void test_sticky_infinities(void) {
+ int i;
+ int j;
+ int k;
+ gpr_timespec infinity[2];
+ gpr_timespec addend[3];
+ infinity[0] = gpr_inf_future(GPR_TIMESPAN);
+ infinity[1] = gpr_inf_past(GPR_TIMESPAN);
+ addend[0] = gpr_inf_future(GPR_TIMESPAN);
+ addend[1] = gpr_inf_past(GPR_TIMESPAN);
+ addend[2] = gpr_time_0(GPR_TIMESPAN);
+
+ /* Infinities are sticky */
+ for (i = 0; i != sizeof(infinity) / sizeof(infinity[0]); i++) {
+ for (j = 0; j != sizeof(addend) / sizeof(addend[0]); j++) {
+ gpr_timespec x = gpr_time_add(infinity[i], addend[j]);
+ GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+ x = gpr_time_sub(infinity[i], addend[j]);
+ GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+ }
+ for (k = -200; k <= 200; k++) {
+ gpr_timespec y = gpr_time_from_micros(k * 100000, GPR_TIMESPAN);
+ gpr_timespec x = gpr_time_add(infinity[i], y);
+ GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+ x = gpr_time_sub(infinity[i], y);
+ GPR_ASSERT(gpr_time_cmp(x, infinity[i]) == 0);
+ }
+ }
+}
+
+static void test_similar(void) {
+ GPR_ASSERT(1 == gpr_time_similar(gpr_inf_future(GPR_TIMESPAN),
+ gpr_inf_future(GPR_TIMESPAN),
+ gpr_time_0(GPR_TIMESPAN)));
+ GPR_ASSERT(1 == gpr_time_similar(gpr_inf_past(GPR_TIMESPAN),
+ gpr_inf_past(GPR_TIMESPAN),
+ gpr_time_0(GPR_TIMESPAN)));
+ GPR_ASSERT(0 == gpr_time_similar(gpr_inf_past(GPR_TIMESPAN),
+ gpr_inf_future(GPR_TIMESPAN),
+ gpr_time_0(GPR_TIMESPAN)));
+ GPR_ASSERT(0 == gpr_time_similar(gpr_inf_future(GPR_TIMESPAN),
+ gpr_inf_past(GPR_TIMESPAN),
+ gpr_time_0(GPR_TIMESPAN)));
+ GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_0(GPR_TIMESPAN)));
+ GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_from_micros(15, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN)));
+ GPR_ASSERT(1 == gpr_time_similar(gpr_time_from_micros(15, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN)));
+ GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_from_micros(25, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN)));
+ GPR_ASSERT(0 == gpr_time_similar(gpr_time_from_micros(25, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN),
+ gpr_time_from_micros(10, GPR_TIMESPAN)));
+}
+
+static void test_convert_extreme(void) {
+ gpr_timespec realtime = {INT64_MAX, 1, GPR_CLOCK_REALTIME};
+ gpr_timespec monotime = gpr_convert_clock_type(realtime, GPR_CLOCK_MONOTONIC);
+ GPR_ASSERT(monotime.tv_sec == realtime.tv_sec);
+ GPR_ASSERT(monotime.clock_type == GPR_CLOCK_MONOTONIC);
+}
+
+static void test_cmp_extreme(void) {
+ gpr_timespec t1 = {INT64_MAX, 1, GPR_CLOCK_REALTIME};
+ gpr_timespec t2 = {INT64_MAX, 2, GPR_CLOCK_REALTIME};
+ GPR_ASSERT(gpr_time_cmp(t1, t2) == 0);
+ t1.tv_sec = INT64_MIN;
+ t2.tv_sec = INT64_MIN;
+ GPR_ASSERT(gpr_time_cmp(t1, t2) == 0);
+}
+
+int main(int argc, char* argv[]) {
+ grpc_test_init(argc, argv);
+
+ test_values();
+ test_add_sub();
+ test_overflow();
+ test_sticky_infinities();
+ test_similar();
+ test_convert_extreme();
+ test_cmp_extreme();
+ return 0;
+}
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