From f3bb6bb227af00411346cfe3d901532c00ceeb55 Mon Sep 17 00:00:00 2001
From: Nirbheek Chauhan <nirbheek@centricular.com>
Date: Tue, 25 Oct 2016 14:14:44 +0530
Subject: Add a unit test to ensure object file order

Part of the changes to make input and output filenames in targets be
deterministic.
---
 run_unittests.py                           | 11 +++++++++++
 test cases/common/5 linkstatic/libfile2.c  |  3 +++
 test cases/common/5 linkstatic/libfile3.c  |  3 +++
 test cases/common/5 linkstatic/libfile4.c  |  3 +++
 test cases/common/5 linkstatic/meson.build |  2 +-
 5 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 test cases/common/5 linkstatic/libfile2.c
 create mode 100644 test cases/common/5 linkstatic/libfile3.c
 create mode 100644 test cases/common/5 linkstatic/libfile4.c

diff --git a/run_unittests.py b/run_unittests.py
index b9c1397d4..9391eaef7 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -136,5 +136,16 @@ class LinuxlikeTests(unittest.TestCase):
         self.assertTrue('-Werror' in vala_command)
         self.assertTrue('-Werror' in c_command)
 
+    def test_static_compile_order(self):
+        testdir = os.path.join(self.common_test_dir, '5 linkstatic')
+        self.init(testdir)
+        compdb = self.get_compdb()
+        # Rules will get written out in this order
+        self.assertTrue(compdb[0]['file'].endswith("libfile.c"))
+        self.assertTrue(compdb[1]['file'].endswith("libfile2.c"))
+        self.assertTrue(compdb[2]['file'].endswith("libfile3.c"))
+        self.assertTrue(compdb[3]['file'].endswith("libfile4.c"))
+        # FIXME: We don't have access to the linker command
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/test cases/common/5 linkstatic/libfile2.c b/test cases/common/5 linkstatic/libfile2.c
new file mode 100644
index 000000000..89780f593
--- /dev/null
+++ b/test cases/common/5 linkstatic/libfile2.c	
@@ -0,0 +1,3 @@
+int func2() {
+    return 2;
+}
diff --git a/test cases/common/5 linkstatic/libfile3.c b/test cases/common/5 linkstatic/libfile3.c
new file mode 100644
index 000000000..5e0d08bb9
--- /dev/null
+++ b/test cases/common/5 linkstatic/libfile3.c	
@@ -0,0 +1,3 @@
+int func3() {
+    return 3;
+}
diff --git a/test cases/common/5 linkstatic/libfile4.c b/test cases/common/5 linkstatic/libfile4.c
new file mode 100644
index 000000000..3645c31f1
--- /dev/null
+++ b/test cases/common/5 linkstatic/libfile4.c	
@@ -0,0 +1,3 @@
+int func4() {
+    return 4;
+}
diff --git a/test cases/common/5 linkstatic/meson.build b/test cases/common/5 linkstatic/meson.build
index c1cb8b639..1f02a5c88 100644
--- a/test cases/common/5 linkstatic/meson.build	
+++ b/test cases/common/5 linkstatic/meson.build	
@@ -1,6 +1,6 @@
 project('static library linking test', 'c')
 
-lib = build_target('mylib', 'libfile.c', target_type : 'static_library')
+lib = build_target('mylib', 'libfile.c', 'libfile2.c', 'libfile3.c', 'libfile4.c', target_type : 'static_library')
 exe = executable('prog', 'main.c', link_with : lib)
 
 test('runtest', exe)
-- 
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