test-compression: allow the file to compress to be specified

I'm seeing strange decompression errors with lz4, which
might be content-dependent. Extend test-compression to allow
testing specific content.

(Edit: PEBKAC: lzcat and lz4cat are not the same beast.
Nevertheless, the test might still be useful in the future.)

diff --git a/src/journal/test-compress.c b/src/journal/test-compress.c
index 00e5222a1c090440519963f714e4d86cfd0b1135..72cadf1771dd43f94d3e109c00c94d1b7f572e0e 100644 (file)
--- a/src/journal/test-compress.c
+++ b/src/journal/test-compress.c
@@ -247,6 +247,9 @@ int main(int argc, char *argv[]) {
                 "text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
                 "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
 
+        /* The file to test compression on can be specified as the first argument */
+        const char *srcfile = argc > 1 ? argv[1] : argv[0];
+
         char data[512] = "random\0";
 
         char huge[4096*1024];
@@ -275,7 +278,7 @@ int main(int argc, char *argv[]) {
                                    huge, sizeof(huge), true);
 
         test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
-                             compress_stream_xz, decompress_stream_xz, argv[0]);
+                             compress_stream_xz, decompress_stream_xz, srcfile);
 #else
         log_info("/* XZ test skipped */");
 #endif
@@ -297,7 +300,7 @@ int main(int argc, char *argv[]) {
                                    huge, sizeof(huge), true);
 
         test_compress_stream(OBJECT_COMPRESSED_LZ4, "lz4cat",
-                             compress_stream_lz4, decompress_stream_lz4, argv[0]);
+                             compress_stream_lz4, decompress_stream_lz4, srcfile);
 
         test_lz4_decompress_partial();
 #else