1 files changed, 115 insertions, 0 deletions
diff --git a/contrib/libdiff/test/verify_all.sh b/contrib/libdiff/test/verify_all.sh
new file mode 100755
index 000000000000..84f898a2d3fd
--- /dev/null
+++ b/contrib/libdiff/test/verify_all.sh
@@ -0,0 +1,115 @@
+#!/bin/sh
+
+diff_prog="../diff/obj/diff"
+if [ ! -x $diff_prog ]; then
+	diff_prog="../diff/diff"
+fi
+
+# At present, test015 only passes with GNU patch.
+# Larry's patch has a bug with empty files in combination with -R...
+if command -v gpatch >/dev/null 2>&1; then
+	patch_prog="gpatch"
+else
+	patch_prog="patch"
+fi
+
+diff_type=unidiff
+
+rm -f errors
+
+verify_diff_script() {
+	orig_left="$1"
+	orig_right="$2"
+	the_diff="$3"
+	expected_diff="$4"
+	diff_opts="$5"
+
+	if echo -- $diff_opts | grep -q -- 'w'; then
+		ignore_whitespace="true"
+	else
+		ignore_whitespace=""
+	fi
+
+	if echo -- $diff_opts | grep -q -- 'e'; then
+		is_edscript="true"
+	else
+		is_edscript=""
+	fi
+	
+	verify_left="verify.$orig_left"
+	verify_right="verify.$orig_right"
+
+        if [ -e "$expected_diff" ]; then
+		echo cmp "$got_diff" "$expected_diff"
+                if ! cmp "$got_diff" "$expected_diff" ; then
+                        echo "FAIL: $got_diff != $expected_diff" | tee -a errors
+                        return 1
+                fi
+	fi
+        if [ -z "$ignore_whitespace" -a -z "$is_edscript" -a "x$diff_type" = "xunidiff" ]; then
+                cp "$orig_left" "$verify_right"
+                $patch_prog --quiet -u "$verify_right" "$the_diff"
+                if ! cmp "$orig_right" "$verify_right" ; then
+                        echo "FAIL: $orig_right != $verify_right" | tee -a errors
+                        return 1
+                fi
+
+                cp "$orig_right" "$verify_left"
+                $patch_prog --quiet -u -R "$verify_left" "$the_diff"
+                if ! cmp "$orig_left" "$verify_left" ; then
+                        echo "FAIL: $orig_left != $verify_left" | tee -a errors
+                        return 1
+                fi
+        elif [ -z "$ignore_whitespace" -a -z "$is_edscript" ]; then
+                tail -n +3 "$the_diff" | grep -v "^+" | sed 's/^.//' > "$verify_left"
+                tail -n +3 "$the_diff" | grep -v "^-" | sed 's/^.//' > "$verify_right"
+
+                if ! cmp "$orig_left" "$verify_left" ; then
+                        echo "FAIL: $orig_left != $verify_left" | tee -a errors
+                        return 1
+                fi
+                if ! cmp "$orig_right" "$verify_right" ; then
+                        echo "FAIL: $orig_right != $verify_right" | tee -a errors
+                        return 1
+                fi
+        fi
+        echo "OK: $diff_prog $orig_left $orig_right"
+        return 0
+}
+
+for left in test*.left* ; do
+        right="$(echo "$left" | sed 's/\.left/\.right/')"
+        diff_opts="$(echo "$left" | sed 's/test[0-9]*\.left\([-a-zA-Z0-9]*\).txt/\1/')"
+        expected_diff="$(echo "$left" | sed 's/test\([-0-9a-zA-Z]*\)\..*/expect\1.diff/')"
+        got_diff="verify.$expected_diff"
+
+        "$diff_prog" $diff_opts "$left" "$right" > "$got_diff"
+
+	verify_diff_script "$left" "$right" "$got_diff" "$expected_diff" "$diff_opts"
+done
+
+# XXX required to keep GNU make completely silent during 'make regress'
+if make -h 2>/dev/null |  grep -q no-print-directory; then
+	make_opts="--no-print-directory"
+fi
+for ctest in *_test.c ; do
+	prog="$(echo "$ctest" | sed 's/.c//')"
+	expect_output="expect.${prog}"
+	prog_output="verify.$expect_output"
+	make $make_opts -s -C "$prog" regress > "$prog_output"
+	if ! cmp "$prog_output" "$expect_output" ; then
+		echo "FAIL: $prog_output != $expect_output" | tee -a errors
+	else
+		echo "OK: $prog"
+	fi
+done
+
+echo
+if [ -f errors ]; then
+	echo "Tests failed:"
+	cat errors
+	exit 1
+else
+	echo "All tests OK"
+	echo
+fi