Add broken test case from #1494.

Also, check a file with a subdirectory and extract_objects().

test cases/common/160 duplicate source names/dir1/file.c

@@ -0,0 +1 @@
+int main() { return 0; }

test cases/common/160 duplicate source names/dir1/meson.build

@@ -0,0 +1 @@
+sources += files('file.c')

test cases/common/160 duplicate source names/dir2/meson.build

@@ -0,0 +1 @@
+sources += files('file.c', 'dir1/file.c')

test cases/common/160 duplicate source names/dir3/meson.build

@@ -0,0 +1 @@
+lib = static_library('empty', 'file.c', 'dir1/file.c')

test cases/common/160 duplicate source names/meson.build

@@ -0,0 +1,7 @@
+project('proj', 'c')
+
+sources = []
+subdir('dir1')
+subdir('dir2')
+subdir('dir3')
+executable('a.out', sources : sources, objects : lib.extract_objects())