Add a script to help making bulk updates of the tests (#914)

Signed-off-by: Jeremie Dimino <jeremie@dimino.org>

test/bulk-update.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+# This scripts aims to make it easier to do a bulk update of all the
+# tests. Simply run it in a terminal and fix the test that's currently
+# failing. The script will automatically switch to the next test when
+# the current test succeeds. It uses inotifywait to detect changes to
+# the test.
+
+DUNE=_build/default/bin/main.exe
+
+LIST=$(mktemp)
+trap "rm -f $LIST" EXIT
+
+echo "Computing the list of failing tests..."
+$DUNE runtest test/blackbox-tests \
+      --diff-command "echo >> $LIST" --dev &> /dev/null
+TESTS=$(cat /tmp/list |cut -d/ -f4 |sed 's/^//')
+rm -f $LIST
+
+count=0
+for t in $TESTS; do
+    let count++
+done
+
+i=1
+for t in $TESTS; do
+    n=0
+    while true; do
+        clear
+        let n++
+        title="[$i/$count] $t (run $n)"
+        echo "$title"
+        echo "${title//?/=}"
+        echo
+        $DUNE build --dev @test/blackbox-tests/$t && break
+        inotifywait $(find test/blackbox-tests/test-cases/$t -type d) \
+                    -e modify,attrib,close_write,move,create,delete
+    done
+done