Add test for logging functionality

Just to make sure everything works properly.

Signed-off-by: Ran Benita <ran234@gmail.com>

Makefile.am

@@ -117,7 +117,8 @@ TESTS = \
 	test/rules-file \
 	test/dump \
 	test/stringcomp \
-	test/keyseq
+	test/keyseq \
+	test/log
 TESTS_LDADD = libtest.la
 
 test_xkey_LDADD = $(TESTS_LDADD)
@@ -131,6 +132,7 @@ test_rules_file_LDADD = $(TESTS_LDADD)
 test_dump_LDADD = $(TESTS_LDADD)
 test_stringcomp_LDADD = $(TESTS_LDADD)
 test_keyseq_LDADD = $(TESTS_LDADD)
+test_log_LDADD = $(TESTS_LDADD)
 
 check_PROGRAMS = $(TESTS)
 

test/.gitignore

@@ -11,3 +11,4 @@ rules-file
 stringcomp
 dump
 keyseq
+log

test/log.c

@@ -0,0 +1,121 @@
+/*
+ * Copyright © 2012 Ran Benita
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <syslog.h>
+
+#include "test.h"
+#include "xkb-priv.h"
+
+#pragma GCC diagnostic ignored "-Wmissing-format-attribute"
+
+static const char *
+priority_to_string(int priority)
+{
+    switch (priority) {
+    case LOG_ERR:
+        return "error";
+    case LOG_WARNING:
+        return "warning";
+    case LOG_INFO:
+        return "info";
+    case LOG_DEBUG:
+        return "debug";
+    }
+
+    return "unknown";
+}
+
+ATTR_PRINTF(3, 0) static void
+log_fn(struct xkb_context *ctx, int priority, const char *fmt, va_list args)
+{
+    char *s;
+    int size;
+    darray_char *ls = xkb_get_user_data(ctx);
+    assert(ls);
+
+    size = vasprintf(&s, fmt, args);
+    assert(size != -1);
+
+    darray_append_string(*ls, priority_to_string(priority));
+    darray_append_lit(*ls, ": ");
+    darray_append_string(*ls, s);
+    free(s);
+}
+
+int
+main(void)
+{
+    darray_char log_string;
+    struct xkb_context *ctx;
+    int ret;
+
+    ret = setenv("XKB_LOG", "warn", 1);
+    ret = setenv("XKB_VERBOSITY", "5", 1);
+    assert(ret == 0);
+    ctx = test_get_context();
+    assert(ctx);
+
+    darray_init(log_string);
+    xkb_set_user_data(ctx, &log_string);
+    xkb_set_log_fn(ctx, log_fn);
+
+    log_warn(ctx, "first warning: %d\n", 87);
+    log_info(ctx, "first info\n");
+    log_dbg(ctx, "first debug: %s\n", "hello");
+    log_err(ctx, "first error: %lu\n", 115415UL);
+    log_lvl(ctx, 5, "first verbose 5\n");
+
+    xkb_set_log_priority(ctx, LOG_DEBUG);
+    log_warn(ctx, "second warning: %d\n", 87);
+    log_dbg(ctx, "second debug: %s %s\n", "hello", "world");
+    log_info(ctx, "second info\n");
+    log_err(ctx, "second error: %lu\n", 115415UL);
+    log_lvl(ctx, 6, "second verbose 6\n");
+
+    xkb_set_log_verbosity(ctx, 0);
+    xkb_set_log_priority(ctx, -1);
+    log_warn(ctx, "third warning: %d\n", 87);
+    log_dbg(ctx, "third debug: %s %s\n", "hello", "world");
+    log_info(ctx, "third info\n");
+    log_err(ctx, "third error: %lu\n", 115415UL);
+    log_lvl(ctx, 0, "third verbose 0\n");
+
+    printf("%s", log_string.item);
+
+    assert(strcmp(log_string.item,
+                  "warning: first warning: 87\n"
+                  "error: first error: 115415\n"
+                  "warning: first verbose 5\n"
+                  "warning: second warning: 87\n"
+                  "debug: second debug: hello world\n"
+                  "info: second info\n"
+                  "error: second error: 115415\n") == 0);
+
+    xkb_context_unref(ctx);
+    darray_free(log_string);
+    return 0;
+}