From 2bb74b53a49f92d433057f4d560b33f1fe2f770a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?SZEDER=20G=C3=A1bor?= Date: Mon, 16 Sep 2019 22:54:12 +0200 Subject: Test the progress display MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 'progress.c' has seen a few fixes recently [1], and, unfortunately, some of those fixes required further fixes [2]. It seems it's time to have a few tests focusing on the subtleties of the progress display. Add the 'test-tool progress' subcommand to help testing the progress display, reading instructions from standard input and turning them into calls to the display_progress() and display_throughput() functions with the given parameters. The progress display is, however, critically dependent on timing, because it's only updated once every second or, if the toal is known in advance, every 1%, and there is the throughput rate as well. These make the progress display far too undeterministic for testing as-is. To address this, add a few testing-specific variables and functions to 'progress.c', allowing the the new test helper to: - Disable the triggered-every-second SIGALRM and set the 'progress_update' flag explicitly based in the input instructions. This way the progress line will be updated deterministically when the test wants it to be updated. - Specify the time elapsed since start_progress() to make the throughput rate calculations deterministic. Add the new test script 't0500-progress-display.sh' to check a few simple cases with and without throughput, and that a shorter progress line properly covers up the previously displayed line in different situations. [1] See commits 545dc345eb (progress: break too long progress bar lines, 2019-04-12) and 9f1fd84e15 (progress: clear previous progress update dynamically, 2019-04-12). [2] 1aed1a5f25 (progress: avoid empty line when breaking the progress line, 2019-05-19) Signed-off-by: SZEDER Gábor Signed-off-by: Junio C Hamano diff --git a/Makefile b/Makefile index f925534..a83532e 100644 --- a/Makefile +++ b/Makefile @@ -728,6 +728,7 @@ TEST_BUILTINS_OBJS += test-parse-options.o TEST_BUILTINS_OBJS += test-path-utils.o TEST_BUILTINS_OBJS += test-pkt-line.o TEST_BUILTINS_OBJS += test-prio-queue.o +TEST_BUILTINS_OBJS += test-progress.o TEST_BUILTINS_OBJS += test-reach.o TEST_BUILTINS_OBJS += test-read-cache.o TEST_BUILTINS_OBJS += test-read-midx.o diff --git a/progress.c b/progress.c index 0eddf18..0063559 100644 --- a/progress.c +++ b/progress.c @@ -45,6 +45,19 @@ struct progress { static volatile sig_atomic_t progress_update; +/* + * These are only intended for testing the progress output, i.e. exclusively + * for 'test-tool progress'. + */ +int progress_testing; +uint64_t progress_test_ns = 0; +void progress_test_force_update(void); /* To silence -Wmissing-prototypes */ +void progress_test_force_update(void) +{ + progress_update = 1; +} + + static void progress_interval(int signum) { progress_update = 1; @@ -55,6 +68,9 @@ static void set_progress_signal(void) struct sigaction sa; struct itimerval v; + if (progress_testing) + return; + progress_update = 0; memset(&sa, 0, sizeof(sa)); @@ -72,6 +88,10 @@ static void set_progress_signal(void) static void clear_progress_signal(void) { struct itimerval v = {{0,},}; + + if (progress_testing) + return; + setitimer(ITIMER_REAL, &v, NULL); signal(SIGALRM, SIG_IGN); progress_update = 0; @@ -154,6 +174,14 @@ static void throughput_string(struct strbuf *buf, uint64_t total, strbuf_humanise_rate(buf, rate * 1024); } +static uint64_t progress_getnanotime(struct progress *progress) +{ + if (progress_testing) + return progress->start_ns + progress_test_ns; + else + return getnanotime(); +} + void display_throughput(struct progress *progress, uint64_t total) { struct throughput *tp; @@ -164,7 +192,7 @@ void display_throughput(struct progress *progress, uint64_t total) return; tp = progress->throughput; - now_ns = getnanotime(); + now_ns = progress_getnanotime(progress); if (!tp) { progress->throughput = tp = xcalloc(1, sizeof(*tp)); @@ -296,7 +324,7 @@ void stop_progress_msg(struct progress **p_progress, const char *msg) struct throughput *tp = progress->throughput; if (tp) { - uint64_t now_ns = getnanotime(); + uint64_t now_ns = progress_getnanotime(progress); unsigned int misecs, rate; misecs = ((now_ns - progress->start_ns) * 4398) >> 32; rate = tp->curr_total / (misecs ? misecs : 1); diff --git a/t/helper/test-progress.c b/t/helper/test-progress.c new file mode 100644 index 0000000..4e9f7fa --- /dev/null +++ b/t/helper/test-progress.c @@ -0,0 +1,81 @@ +/* + * A test helper to exercise the progress display. + * + * Reads instructions from standard input, one instruction per line: + * + * "progress " - Call display_progress() with the given item count + * as parameter. + * "throughput - Call display_throughput() with the given + * byte count as parameter. The 'millis' + * specify the time elapsed since the + * start_progress() call. + * "update" - Set the 'progress_update' flag. + * + * See 't0500-progress-display.sh' for examples. + */ +#include "test-tool.h" +#include "gettext.h" +#include "parse-options.h" +#include "progress.h" +#include "strbuf.h" + +/* + * These are defined in 'progress.c', but are not exposed in 'progress.h', + * because they are exclusively for testing. + */ +extern int progress_testing; +extern uint64_t progress_test_ns; +void progress_test_force_update(void); + +int cmd__progress(int argc, const char **argv) +{ + uint64_t total = 0; + const char *title; + struct strbuf line = STRBUF_INIT; + struct progress *progress; + + const char *usage[] = { + "test-tool progress [--total=] ", + NULL + }; + struct option options[] = { + OPT_INTEGER(0, "total", &total, "total number of items"), + OPT_END(), + }; + + argc = parse_options(argc, argv, NULL, options, usage, 0); + if (argc != 1) + die("need a title for the progress output"); + title = argv[0]; + + progress_testing = 1; + progress = start_progress(title, total); + while (strbuf_getline(&line, stdin) != EOF) { + char *end; + + if (skip_prefix(line.buf, "progress ", (const char **) &end)) { + uint64_t item_count = strtoull(end, &end, 10); + if (*end != '\0') + die("invalid input: '%s'\n", line.buf); + display_progress(progress, item_count); + } else if (skip_prefix(line.buf, "throughput ", + (const char **) &end)) { + uint64_t byte_count, test_ms; + + byte_count = strtoull(end, &end, 10); + if (*end != ' ') + die("invalid input: '%s'\n", line.buf); + test_ms = strtoull(end + 1, &end, 10); + if (*end != '\0') + die("invalid input: '%s'\n", line.buf); + progress_test_ns = test_ms * 1000 * 1000; + display_throughput(progress, byte_count); + } else if (!strcmp(line.buf, "update")) + progress_test_force_update(); + else + die("invalid input: '%s'\n", line.buf); + } + stop_progress(&progress); + + return 0; +} diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c index ce7e890..19ee26d 100644 --- a/t/helper/test-tool.c +++ b/t/helper/test-tool.c @@ -42,6 +42,7 @@ static struct test_cmd cmds[] = { { "path-utils", cmd__path_utils }, { "pkt-line", cmd__pkt_line }, { "prio-queue", cmd__prio_queue }, + { "progress", cmd__progress }, { "reach", cmd__reach }, { "read-cache", cmd__read_cache }, { "read-midx", cmd__read_midx }, diff --git a/t/helper/test-tool.h b/t/helper/test-tool.h index f805bb3..c2aa56e 100644 --- a/t/helper/test-tool.h +++ b/t/helper/test-tool.h @@ -32,6 +32,7 @@ int cmd__parse_options(int argc, const char **argv); int cmd__path_utils(int argc, const char **argv); int cmd__pkt_line(int argc, const char **argv); int cmd__prio_queue(int argc, const char **argv); +int cmd__progress(int argc, const char **argv); int cmd__reach(int argc, const char **argv); int cmd__read_cache(int argc, const char **argv); int cmd__read_midx(int argc, const char **argv); diff --git a/t/t0500-progress-display.sh b/t/t0500-progress-display.sh new file mode 100755 index 0000000..24ccbd8 --- /dev/null +++ b/t/t0500-progress-display.sh @@ -0,0 +1,286 @@ +#!/bin/sh + +test_description='progress display' + +. ./test-lib.sh + +show_cr () { + tr '\015' Q | sed -e "s/Q/\\$LF/g" +} + +test_expect_success 'simple progress display' ' + cat >expect <<-\EOF && + Working hard: 1 + Working hard: 2 + Working hard: 5 + Working hard: 5, done. + EOF + + cat >in <<-\EOF && + update + progress 1 + update + progress 2 + progress 3 + progress 4 + update + progress 5 + EOF + test-tool progress "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display with total' ' + cat >expect <<-\EOF && + Working hard: 33% (1/3) + Working hard: 66% (2/3) + Working hard: 100% (3/3) + Working hard: 100% (3/3), done. + EOF + + cat >in <<-\EOF && + progress 1 + progress 2 + progress 3 + EOF + test-tool progress --total=3 "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display breaks long lines #1' ' + sed -e "s/Z$//" >expect <<\EOF && +Working hard.......2.........3.........4.........5.........6: 0% (100/100000) +Working hard.......2.........3.........4.........5.........6: 1% (1000/100000) +Working hard.......2.........3.........4.........5.........6: Z + 10% (10000/100000) + 100% (100000/100000) + 100% (100000/100000), done. +EOF + + cat >in <<-\EOF && + progress 100 + progress 1000 + progress 10000 + progress 100000 + EOF + test-tool progress --total=100000 \ + "Working hard.......2.........3.........4.........5.........6" \ + stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display breaks long lines #2' ' + # Note: we dont need that many spaces after the title to cover up + # the last line before breaking the progress line. + sed -e "s/Z$//" >expect <<\EOF && +Working hard.......2.........3.........4.........5.........6: 0% (1/100000) +Working hard.......2.........3.........4.........5.........6: 0% (2/100000) +Working hard.......2.........3.........4.........5.........6: Z + 10% (10000/100000) + 100% (100000/100000) + 100% (100000/100000), done. +EOF + + cat >in <<-\EOF && + update + progress 1 + update + progress 2 + progress 10000 + progress 100000 + EOF + test-tool progress --total=100000 \ + "Working hard.......2.........3.........4.........5.........6" \ + stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display breaks long lines #3 - even the first is too long' ' + # Note: we dont actually need any spaces at the end of the title + # line, because there is no previous progress line to cover up. + sed -e "s/Z$//" >expect <<\EOF && +Working hard.......2.........3.........4.........5.........6: Z + 25% (25000/100000) + 50% (50000/100000) + 75% (75000/100000) + 100% (100000/100000) + 100% (100000/100000), done. +EOF + + cat >in <<-\EOF && + progress 25000 + progress 50000 + progress 75000 + progress 100000 + EOF + test-tool progress --total=100000 \ + "Working hard.......2.........3.........4.........5.........6" \ + stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display breaks long lines #4 - title line matches terminal width' ' + cat >expect <<\EOF && +Working hard.......2.........3.........4.........5.........6.........7.........: + 25% (25000/100000) + 50% (50000/100000) + 75% (75000/100000) + 100% (100000/100000) + 100% (100000/100000), done. +EOF + + cat >in <<-\EOF && + progress 25000 + progress 50000 + progress 75000 + progress 100000 + EOF + test-tool progress --total=100000 \ + "Working hard.......2.........3.........4.........5.........6.........7........." \ + stderr && + + show_cr out && + test_i18ncmp expect out +' + +# Progress counter goes backwards, this should not happen in practice. +test_expect_success 'progress shortens - crazy caller' ' + cat >expect <<-\EOF && + Working hard: 10% (100/1000) + Working hard: 20% (200/1000) + Working hard: 0% (1/1000) + Working hard: 100% (1000/1000) + Working hard: 100% (1000/1000), done. + EOF + + cat >in <<-\EOF && + progress 100 + progress 200 + progress 1 + progress 1000 + EOF + test-tool progress --total=1000 "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display with throughput' ' + cat >expect <<-\EOF && + Working hard: 10 + Working hard: 20, 200.00 KiB | 100.00 KiB/s + Working hard: 30, 300.00 KiB | 100.00 KiB/s + Working hard: 40, 400.00 KiB | 100.00 KiB/s + Working hard: 40, 400.00 KiB | 100.00 KiB/s, done. + EOF + + cat >in <<-\EOF && + throughput 102400 1000 + update + progress 10 + throughput 204800 2000 + update + progress 20 + throughput 307200 3000 + update + progress 30 + throughput 409600 4000 + update + progress 40 + EOF + test-tool progress "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'progress display with throughput and total' ' + cat >expect <<-\EOF && + Working hard: 25% (10/40) + Working hard: 50% (20/40), 200.00 KiB | 100.00 KiB/s + Working hard: 75% (30/40), 300.00 KiB | 100.00 KiB/s + Working hard: 100% (40/40), 400.00 KiB | 100.00 KiB/s + Working hard: 100% (40/40), 400.00 KiB | 100.00 KiB/s, done. + EOF + + cat >in <<-\EOF && + throughput 102400 1000 + progress 10 + throughput 204800 2000 + progress 20 + throughput 307200 3000 + progress 30 + throughput 409600 4000 + progress 40 + EOF + test-tool progress --total=40 "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'cover up after throughput shortens' ' + cat >expect <<-\EOF && + Working hard: 1 + Working hard: 2, 800.00 KiB | 400.00 KiB/s + Working hard: 3, 1.17 MiB | 400.00 KiB/s + Working hard: 4, 1.56 MiB | 400.00 KiB/s + Working hard: 4, 1.56 MiB | 400.00 KiB/s, done. + EOF + + cat >in <<-\EOF && + throughput 409600 1000 + update + progress 1 + throughput 819200 2000 + update + progress 2 + throughput 1228800 3000 + update + progress 3 + throughput 1638400 4000 + update + progress 4 + EOF + test-tool progress "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_expect_success 'cover up after throughput shortens a lot' ' + cat >expect <<-\EOF && + Working hard: 1 + Working hard: 2, 1000.00 KiB | 1000.00 KiB/s + Working hard: 3, 3.00 MiB | 1.50 MiB/s + Working hard: 3, 3.00 MiB | 1024.00 KiB/s, done. + EOF + + cat >in <<-\EOF && + throughput 1 1000 + update + progress 1 + throughput 1024000 2000 + update + progress 2 + throughput 3145728 3000 + update + progress 3 + EOF + test-tool progress "Working hard" stderr && + + show_cr out && + test_i18ncmp expect out +' + +test_done -- cgit v0.10.2-6-g49f6