From patchwork Fri Mar 20 23:07:34 2020
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Subject: D8189: testlib: add a small scrip to help process to synchronise
 using file
From: phabricator <phabricator@mercurial-scm.org>
X-Patchwork-Id: 45853
Message-Id: <76429eddee8401735f97a2c6f26b69e6@localhost.localdomain>
To: Phabricator <phabricator@mercurial-scm.org>
Cc: mercurial-devel@mercurial-scm.org
Date: Fri, 20 Mar 2020 23:07:34 +0000

marmoute updated this revision to Diff 20856.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST UPDATE
  https://phab.mercurial-scm.org/D8189?vs=20392&id=20856

BRANCH
  default

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D8189/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D8189

AFFECTED FILES
  tests/testlib/wait-on-file

CHANGE DETAILS




To: marmoute, #hg-reviewers
Cc: durin42, mharbison72, mercurial-devel

diff --git a/tests/testlib/wait-on-file b/tests/testlib/wait-on-file
new file mode 100755
--- /dev/null
+++ b/tests/testlib/wait-on-file
@@ -0,0 +1,32 @@
+#!/bin/bash
+#
+# wait up to TIMEOUT seconds until a WAIT_ON_FILE is created.
+#
+# In addition, this script can create CREATE_FILE once it is ready to wait.
+
+if [ $# -lt 2 ] || [ $# -gt 3 ]; then
+    echo $#
+    echo "USAGE: $0 TIMEOUT WAIT_ON_FILE [CREATE_FILE]"
+fi
+
+timer="$1"
+wait_on="$2"
+create=""
+if [ $# -eq 3 ]; then
+    create="$3"
+fi
+
+if [ -n "$create" ];
+then
+    touch "$create"
+    create=""
+fi
+while [ "$timer" -gt 0 ] && [ ! -f "$wait_on" ];
+do
+    timer=$(( timer - 1))
+    sleep 0.01
+done
+if [ "$timer" -le 0 ]; then
+    echo "file not created after $1 seconds: $wait_on" >&2
+    exit 1
+fi