Unit tests for router download functions.

Also, sort test suites alphabetically.

src/test/include.am

@@ -22,6 +22,7 @@ src_test_test_SOURCES = \
 	src/test/test_cell_formats.c \
 	src/test/test_circuitlist.c \
 	src/test/test_circuitmux.c \
+	src/test/test_config.c \
 	src/test/test_containers.c \
 	src/test/test_controller_events.c \
 	src/test/test_crypto.c \
@@ -29,19 +30,19 @@ src_test_test_SOURCES = \
 	src/test/test_data.c \
 	src/test/test_dir.c \
 	src/test/test_extorport.c \
+	src/test/test_hs.c \
 	src/test/test_introduce.c \
 	src/test/test_logging.c \
 	src/test/test_microdesc.c \
+	src/test/test_nodelist.c \
 	src/test/test_oom.c \
 	src/test/test_options.c \
 	src/test/test_pt.c \
 	src/test/test_replay.c \
 	src/test/test_routerkeys.c \
+	src/test/test_routerlist.c \
 	src/test/test_socks.c \
 	src/test/test_util.c \
-	src/test/test_config.c \
-	src/test/test_hs.c \
-	src/test/test_nodelist.c \
 	src/ext/tinytest.c
 
 src_test_test_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)

src/test/test.c

@@ -1637,33 +1637,35 @@ extern struct testcase_t hs_tests[];
 extern struct testcase_t nodelist_tests[];
 extern struct testcase_t routerkeys_tests[];
 extern struct testcase_t oom_tests[];
+extern struct testcase_t routerlist_tests[];
 
 static struct testgroup_t testgroups[] = {
   { "", test_array },
-  { "buffer/", buffer_tests },
-  { "socks/", socks_tests },
   { "addr/", addr_tests },
-  { "crypto/", crypto_tests },
-  { "container/", container_tests },
-  { "util/", util_tests },
-  { "util/logging/", logging_tests },
+  { "buffer/", buffer_tests },
   { "cellfmt/", cell_format_tests },
   { "cellqueue/", cell_queue_tests },
-  { "dir/", dir_tests },
-  { "dir/md/", microdesc_tests },
-  { "pt/", pt_tests },
-  { "config/", config_tests },
-  { "replaycache/", replaycache_tests },
-  { "introduce/", introduce_tests },
   { "circuitlist/", circuitlist_tests },
   { "circuitmux/", circuitmux_tests },
-  { "options/", options_tests },
-  { "extorport/", extorport_tests },
+  { "config/", config_tests },
+  { "container/", container_tests },
   { "control/", controller_event_tests },
+  { "crypto/", crypto_tests },
+  { "dir/", dir_tests },
+  { "dir/md/", microdesc_tests },
+  { "extorport/", extorport_tests },
   { "hs/", hs_tests },
+  { "introduce/", introduce_tests },
   { "nodelist/", nodelist_tests },
-  { "routerkeys/", routerkeys_tests },
   { "oom/", oom_tests },
+  { "options/", options_tests },
+  { "pt/", pt_tests },
+  { "routerkeys/", routerkeys_tests },
+  { "routerlist/", routerlist_tests },
+  { "replaycache/", replaycache_tests },
+  { "socks/", socks_tests },
+  { "util/", util_tests },
+  { "util/logging/", logging_tests },
   END_OF_GROUPS
 };
 

src/test/test_dir.c

@@ -2357,6 +2357,30 @@ test_dir_http_handling(void *args)
   tor_free(url);
 }
 
+static void
+test_dir_purpose_needs_anonymity(void *arg)
+{
+  (void)arg;
+  tt_int_op(1, ==, purpose_needs_anonymity(0, ROUTER_PURPOSE_BRIDGE));
+  tt_int_op(1, ==, purpose_needs_anonymity(0, ROUTER_PURPOSE_GENERAL));
+  tt_int_op(0, ==, purpose_needs_anonymity(DIR_PURPOSE_FETCH_MICRODESC,
+                                            ROUTER_PURPOSE_GENERAL));
+ done: ;
+}
+
+static void
+test_dir_fetch_type(void *arg)
+{
+  (void)arg;
+  test_eq(dir_fetch_type(DIR_PURPOSE_FETCH_MICRODESC, ROUTER_PURPOSE_GENERAL,
+                         NULL), MICRODESC_DIRINFO);
+  test_eq(dir_fetch_type(DIR_PURPOSE_FETCH_SERVERDESC, ROUTER_PURPOSE_BRIDGE,
+                         NULL), BRIDGE_DIRINFO);
+  test_eq(dir_fetch_type(DIR_PURPOSE_FETCH_CONSENSUS, ROUTER_PURPOSE_GENERAL,
+                         "microdesc"), V3_DIRINFO | MICRODESC_DIRINFO);
+ done: ;
+}
+
 #define DIR_LEGACY(name)                                                   \
   { #name, legacy_test_helper, TT_FORK, &legacy_setup, test_dir_ ## name }
 
@@ -2379,6 +2403,8 @@ struct testcase_t dir_tests[] = {
   DIR_LEGACY(clip_unmeasured_bw_kb_alt),
   DIR(fmt_control_ns, 0),
   DIR(http_handling, 0),
+  DIR(purpose_needs_anonymity, 0),
+  DIR(fetch_type, 0),
   END_OF_TESTCASES
 };
 

src/test/test_nodelist.c

@@ -10,7 +10,7 @@
 #include "nodelist.h"
 #include "test.h"
 
-/** Tese the case when node_get_by_id() returns NULL,
+/** Test the case when node_get_by_id() returns NULL,
  * node_get_verbose_nickname_by_id should return the base 16 encoding
  * of the id.
  */