Tests: Replace non portable shell parameter expansion

The shell parameter expansion using # and ## is not supported in
Solaris 10 Bourne shell (/bin/sh). Even though this is POSIX, it is not fully
portable, so we should avoid it.

tests/create_compress_files.c

@@ -24,7 +24,7 @@
 // Avoid re-creating the test files every time the tests are run.
 #define maybe_create_test(argc, argv, name) \
 do { \
-	if ((argc < 2 || strcmp(argv[1], #name) == 0) \
+	if ((argc < 2 || strcmp(argv[1], "compress_generated_" #name) == 0) \
 			&& !file_exists("compress_generated_" #name)) { \
 		FILE *file = file_create("compress_generated_" #name); \
 		write_ ## name(file); \

tests/test_compress.sh

@@ -85,9 +85,16 @@ test -x ../src/xzdec/xzdec || XZDEC=
 
 # Create the required input file if needed.
 FILE=$1
+# Derive temporary filenames for compressed and uncompressed outputs
+# from the input filename. This is needed when multiple tests are
+# run in parallel.
+TMP_COMP="tmp_comp_$FILE"
+TMP_UNCOMP="tmp_uncomp_$FILE"
 case $FILE in
+#	compress_generated files will be created in the build directory
+#	in the /tests/ sub-directory.
 	compress_generated_*)
-		if ./create_compress_files "${FILE#compress_generated_}" ; then
+		if ./create_compress_files "$FILE" ; then
 			:
 		else
 			rm -f "$FILE"
@@ -95,18 +102,17 @@ case $FILE in
 			exit 1
 		fi
 		;;
+#	compress_prepared files exist in the source directory since they
+#       do not need to be copied or regenerated.
+	compress_prepared_*)
+		FILE="$srcdir/$FILE"
+		;;
 	'')
 		echo "No test file was specified."
 		exit 1
 		;;
 esac
 
-# Derive temporary filenames for compressed and uncompressed outputs
-# from the input filename. This is needed when multiple tests are
-# run in parallel.
-TMP_COMP="tmp_comp_${FILE##*/}"
-TMP_UNCOMP="tmp_uncomp_${FILE##*/}"
-
 # Remove temporary now (in case they are something weird), and on exit.
 rm -f "$TMP_COMP" "$TMP_UNCOMP"
 trap 'rm -f "$TMP_COMP" "$TMP_UNCOMP"' 0

tests/test_compress_prepared_bcj_sparc

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-exec "$srcdir/test_compress.sh" "$srcdir/compress_prepared_bcj_sparc"
+exec "$srcdir/test_compress.sh" compress_prepared_bcj_sparc

tests/test_compress_prepared_bcj_x86

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-exec "$srcdir/test_compress.sh" "$srcdir/compress_prepared_bcj_x86"
+exec "$srcdir/test_compress.sh" compress_prepared_bcj_x86