[committed] Add test-cases twice.sh and twice-multifile.sh

[Tom de Vries <tdevries@suse.de>]

Hi,

Add test-cases that check the behaviour of dwz when it fails to compress.  In
addition, these test-cases verify that dwz can process its own output as
input.

Committed to trunk.

Thanks,
- Tom

Add test-cases twice.sh and twice-multifile.sh

2019-03-17  Tom de Vries  <tdevries@suse.de>

	* testsuite/dwz.tests/twice-multifile.sh: New test.
	* testsuite/dwz.tests/twice.sh: New test.

---
 testsuite/dwz.tests/twice-multifile.sh | 36 ++++++++++++++++++++++++++++++++++
 testsuite/dwz.tests/twice.sh           | 28 ++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)

diff --git a/testsuite/dwz.tests/twice-multifile.sh b/testsuite/dwz.tests/twice-multifile.sh
new file mode 100644
index 0000000..fded77a
--- /dev/null
+++ b/testsuite/dwz.tests/twice-multifile.sh
@@ -0,0 +1,36 @@
+cp ../hello 1
+cp 1 2
+
+dwz 1 2
+
+smaller-than.sh 1 ../hello
+smaller-than.sh 2 ../hello
+
+cp 1 1.saved
+cp 2 2.saved
+
+if dwz -m 3 1 2 2>dwz.err; status=$?; then
+    true
+fi
+
+if ! grep -q "DWARF compression not beneficial" dwz.err; then
+    cat dwz.err
+    exit 1
+fi
+
+if [ $(grep -qv "DWARF compression not beneficial" dwz.err \
+	   | wc -l) -gt 0 ]; then
+    cat dwz.err
+    exit 1
+fi
+
+if [ $status -eq 1 ]; then
+    # PR24354
+    true
+else
+    [ $status -eq 0 ]
+fi
+
+cmp 1 1.saved
+
+rm -f 1 1.saved 2 2.saved dwz.err
diff --git a/testsuite/dwz.tests/twice.sh b/testsuite/dwz.tests/twice.sh
new file mode 100644
index 0000000..4db798e
--- /dev/null
+++ b/testsuite/dwz.tests/twice.sh
@@ -0,0 +1,28 @@
+cp ../hello 1
+
+dwz 1
+
+smaller-than.sh 1 ../hello
+
+cp 1 1.saved
+
+if dwz 1 2>dwz.err; status=$?; then
+    true
+fi
+
+if ! grep -q "DWARF compression not beneficial" dwz.err; then
+    cat dwz.err
+    exit 1
+fi
+
+if [ $(grep -qv "DWARF compression not beneficial" dwz.err \
+	   | wc -l) -gt 0 ]; then
+    cat dwz.err
+    exit 1
+fi
+
+[ $status -eq 0 ]
+
+cmp 1 1.saved
+
+rm -f 1 1.saved dwz.err