[PATCH 1/8] progress.c tests: make start/stop verbs on stdin
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git@vger.kernel.org
Cc
Junio C Hamano
SZEDER Gábor
René Scharfe
Ævar Arnfjörð Bjarmason
From
Ævar Arnfjörð Bjarmason
See Also
Prev Ref 1
Date
2021-07-22 12:54:59 UTC
Change the usage of the "test-tool progress" introduced in
2bb74b53a49 (Test the progress display, 2019-09-16) to take command
like "start" and "stop" on stdin, instead of running them implicitly.

This makes for tests that are easier to read, since the recipe will
mirror the API usage, and allows for easily testing invalid usage that
would yield (or should yield) a BUG(), e.g. providing two "start"
calls in a row. A subsequent commit will add such stress tests.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/helper/test-progress.c    | 43 +++++++++++++++++++--------
 t/t0500-progress-display.sh | 59 +++++++++++++++++++++++--------------
 2 files changed, 67 insertions(+), 35 deletions(-)

diff --git a/t/helper/test-progress.c b/t/helper/test-progress.c
index 5d05cbe789..685c0a7c49 100644
--- a/t/helper/test-progress.c
+++ b/t/helper/test-progress.c
@@ -3,6 +3,9 @@
  *
  * Reads instructions from standard input, one instruction per line:
  *
+ *   "start[ <total>[ <title>]]" - Call start_progress(title, total),
+ *                                 when "start" use a title of
+ *                                 "Working hard" with a total of 0.
  *   "progress <items>" - Call display_progress() with the given item count
  *                        as parameter.
  *   "throughput <bytes> <millis> - Call display_throughput() with the given
@@ -10,6 +13,7 @@
  *                                  specify the time elapsed since the
  *                                  start_progress() call.
  *   "update" - Set the 'progress_update' flag.
+ *   "stop" - Call stop_progress().
  *
  * See 't0500-progress-display.sh' for examples.
  */
@@ -22,31 +26,41 @@
 
 int cmd__progress(int argc, const char **argv)
 {
-	int total = 0;
-	const char *title;
+	const char *default_title = "Working hard";
+	char *detached_title = NULL;
 	struct strbuf line = STRBUF_INIT;
-	struct progress *progress;
+	struct progress *progress = NULL;
 
 	const char *usage[] = {
-		"test-tool progress [--total=<n>] <progress-title>",
+		"test-tool progress <stdin",
 		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];
+	if (argc)
+		usage_with_options(usage, options);
 
 	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)) {
+		if (!strcmp(line.buf, "start")) {
+			progress = start_progress(default_title, 0);
+		} else if (skip_prefix(line.buf, "start ", (const char **) &end)) {
+			uint64_t total = strtoull(end, &end, 10);
+			if (*end == '\0') {
+				progress = start_progress(default_title, total);
+			} else if (*end == ' ') {
+				free(detached_title);
+				detached_title = strbuf_detach(&line, NULL);
+				progress = start_progress(end + 1, total);
+			} else {
+				die("invalid input: '%s'\n", line.buf);
+			}
+		} else 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);
@@ -63,12 +77,15 @@ int cmd__progress(int argc, const char **argv)
 				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"))
+		} else if (!strcmp(line.buf, "update")) {
 			progress_test_force_update();
-		else
+		} else if (!strcmp(line.buf, "stop")) {
+			stop_progress(&progress);
+		} else {
 			die("invalid input: '%s'\n", line.buf);
+		}
 	}
-	stop_progress(&progress);
+	free(detached_title);
 
 	return 0;
 }
diff --git a/t/t0500-progress-display.sh b/t/t0500-progress-display.sh
index 22058b503a..ca96ac1fa5 100755
--- a/t/t0500-progress-display.sh
+++ b/t/t0500-progress-display.sh
@@ -17,6 +17,7 @@ test_expect_success 'simple progress display' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start 0
 	update
 	progress 1
 	update
@@ -25,8 +26,9 @@ test_expect_success 'simple progress display' '
 	progress 4
 	update
 	progress 5
+	stop
 	EOF
-	test-tool progress "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -41,11 +43,13 @@ test_expect_success 'progress display with total' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start 3
 	progress 1
 	progress 2
 	progress 3
+	stop
 	EOF
-	test-tool progress --total=3 "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -62,14 +66,14 @@ Working hard.......2.........3.........4.........5.........6:
 EOF
 
 	cat >in <<-\EOF &&
+	start 100000 Working hard.......2.........3.........4.........5.........6
 	progress 100
 	progress 1000
 	progress 10000
 	progress 100000
+	stop
 	EOF
-	test-tool progress --total=100000 \
-		"Working hard.......2.........3.........4.........5.........6" \
-		<in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -88,16 +92,15 @@ Working hard.......2.........3.........4.........5.........6:
 EOF
 
 	cat >in <<-\EOF &&
-	update
+	start 100000 Working hard.......2.........3.........4.........5.........6
 	progress 1
 	update
 	progress 2
 	progress 10000
 	progress 100000
+	stop
 	EOF
-	test-tool progress --total=100000 \
-		"Working hard.......2.........3.........4.........5.........6" \
-		<in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -116,14 +119,14 @@ Working hard.......2.........3.........4.........5.........6:
 EOF
 
 	cat >in <<-\EOF &&
+	start 100000 Working hard.......2.........3.........4.........5.........6
 	progress 25000
 	progress 50000
 	progress 75000
 	progress 100000
+	stop
 	EOF
-	test-tool progress --total=100000 \
-		"Working hard.......2.........3.........4.........5.........6" \
-		<in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -140,14 +143,14 @@ Working hard.......2.........3.........4.........5.........6.........7.........:
 EOF
 
 	cat >in <<-\EOF &&
+	start 100000 Working hard.......2.........3.........4.........5.........6.........7.........
 	progress 25000
 	progress 50000
 	progress 75000
 	progress 100000
+	stop
 	EOF
-	test-tool progress --total=100000 \
-		"Working hard.......2.........3.........4.........5.........6.........7........." \
-		<in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -164,12 +167,14 @@ test_expect_success 'progress shortens - crazy caller' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start 1000
 	progress 100
 	progress 200
 	progress 1
 	progress 1000
+	stop
 	EOF
-	test-tool progress --total=1000 "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -185,6 +190,7 @@ test_expect_success 'progress display with throughput' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start
 	throughput 102400 1000
 	update
 	progress 10
@@ -197,8 +203,9 @@ test_expect_success 'progress display with throughput' '
 	throughput 409600 4000
 	update
 	progress 40
+	stop
 	EOF
-	test-tool progress "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -214,6 +221,7 @@ test_expect_success 'progress display with throughput and total' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start 40
 	throughput 102400 1000
 	progress 10
 	throughput 204800 2000
@@ -222,8 +230,9 @@ test_expect_success 'progress display with throughput and total' '
 	progress 30
 	throughput 409600 4000
 	progress 40
+	stop
 	EOF
-	test-tool progress --total=40 "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -239,6 +248,7 @@ test_expect_success 'cover up after throughput shortens' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start
 	throughput 409600 1000
 	update
 	progress 1
@@ -251,8 +261,9 @@ test_expect_success 'cover up after throughput shortens' '
 	throughput 1638400 4000
 	update
 	progress 4
+	stop
 	EOF
-	test-tool progress "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -267,6 +278,7 @@ test_expect_success 'cover up after throughput shortens a lot' '
 	EOF
 
 	cat >in <<-\EOF &&
+	start
 	throughput 1 1000
 	update
 	progress 1
@@ -276,8 +288,9 @@ test_expect_success 'cover up after throughput shortens a lot' '
 	throughput 3145728 3000
 	update
 	progress 3
+	stop
 	EOF
-	test-tool progress "Working hard" <in 2>stderr &&
+	test-tool progress <in 2>stderr &&
 
 	show_cr <stderr >out &&
 	test_cmp expect out
@@ -285,6 +298,7 @@ test_expect_success 'cover up after throughput shortens a lot' '
 
 test_expect_success 'progress generates traces' '
 	cat >in <<-\EOF &&
+	start 40
 	throughput 102400 1000
 	update
 	progress 10
@@ -297,10 +311,11 @@ test_expect_success 'progress generates traces' '
 	throughput 409600 4000
 	update
 	progress 40
+	stop
 	EOF
 
-	GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool progress --total=40 \
-		"Working hard" <in 2>stderr &&
+	GIT_TRACE2_EVENT="$(pwd)/trace.event" test-tool progress \
+		<in 2>stderr &&
 
 	# t0212/parse_events.perl intentionally omits regions and data.
 	test_region progress "Working hard" trace.event &&
-- 
2.32.0.957.gd9e39d72fe6