test: add test to convert name to path

If we create a kmod_module from a name, the path returned is relative to
the module dirname, as passed during kmod_ctx creation. Note that if
kmod_ctx is created with kmod_new(NULL), the dir used is the one
returned by uname.

Makefile.am

@@ -58,7 +58,7 @@ test_test_loaded_SOURCES = test/test-loaded.c
 test_test_loaded_LDADD = libkmod/libkmod.la
 
 noinst_PROGRAMS = test/test-insmod test/test-rmmod test/test-rmmod2 \
-		  test/test-lookup $(check_PROGRAMS)
+		  test/test-lookup test/test-path-from-name $(check_PROGRAMS)
 test_test_rmmod_SOURCES = test/test-rmmod.c
 test_test_rmmod_LDADD = libkmod/libkmod.la
 
@@ -70,3 +70,6 @@ test_test_insmod_LDADD = libkmod/libkmod.la
 
 test_test_lookup_SOURCES = test/test-lookup.c
 test_test_lookup_LDADD = libkmod/libkmod.la
+
+test_test_path_from_name_SOURCES = test/test-path-from-name.c
+test_test_path_from_name_LDADD = libkmod/libkmod.la

test/.gitignore

@@ -5,3 +5,4 @@ test-rmmod
 test-rmmod2
 test-insmod
 test-lookup
+test-path-from-name

test/test-path-from-name.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <errno.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <string.h>
+#include <libkmod.h>
+
+
+int main(int argc, char *argv[])
+{
+	struct kmod_ctx *ctx;
+	struct kmod_module *mod;
+	const char *path, *modname;
+	int err;
+
+	if (argc < 2) {
+		fprintf(stderr, "ERR: Provide an alias name\n");
+		return EXIT_FAILURE;
+	}
+
+	modname = argv[1];
+
+	ctx = kmod_new(NULL);
+	if (ctx == NULL)
+		exit(EXIT_FAILURE);
+
+	printf("libkmod version %s\n", VERSION);
+
+	err = kmod_module_new_from_name(ctx, modname, &mod);
+	if (err < 0) {
+		fprintf(stderr, "error creating module: '%s'\n", strerror(-err));
+		goto fail;
+	}
+
+	path = kmod_module_get_path(mod);
+
+	printf("modname: '%s'  path: '%s'\n", modname, path);
+	kmod_module_unref(mod);
+	kmod_unref(ctx);
+
+	return EXIT_SUCCESS;
+
+fail:
+	kmod_unref(ctx);
+	return EXIT_FAILURE;
+}