thodg/libgit2/tests/config/snapshot.c

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• Hash : 146e5bf7
  Author :
  Date : 2019-11-06T07:27:35
  

  config_mem: implement support for snapshots Similar as in commit dadbb33b6 (Fix crash if snapshotting a config_snapshot, 2019-11-01), let's implement snapshots for in-memory configuration entries. As this deletes more code than it adds, it doesn't make any sense to not allow for this and allows users to treat config backends mostly the same.

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• tests/config/snapshot.c

• #include "clar_libgit2.h"
  
  #include "config_backend.h"
  
  static git_config *cfg;
  static git_config *snapshot;
  
  void test_config_snapshot__cleanup(void)
  {
  	git_config_free(cfg);
  	cfg = NULL;
  	git_config_free(snapshot);
  	snapshot = NULL;
  }
  
  void test_config_snapshot__create_snapshot(void)
  {
  	int32_t i;
  
  	cl_git_mkfile("config", "[old]\nvalue = 5\n");
  	cl_git_pass(git_config_open_ondisk(&cfg, "config"));
  	cl_git_pass(git_config_get_int32(&i, cfg, "old.value"));
  	cl_assert_equal_i(5, i);
  
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  
  	/* Change the value on the file itself (simulate external process) */
  	cl_git_mkfile("config", "[old]\nvalue = 56\n");
  
  	cl_git_pass(git_config_get_int32(&i, cfg, "old.value"));
  	cl_assert_equal_i(56, i);
  	cl_git_pass(git_config_get_int32(&i, snapshot, "old.value"));
  	cl_assert_equal_i(5, i);
  
  	/* Change the value on the file itself (simulate external process) */
  	cl_git_mkfile("config", "[old]\nvalue = 999\n");
  
  	/* Old snapshot should still have the old value */
  	cl_git_pass(git_config_get_int32(&i, snapshot, "old.value"));
  	cl_assert_equal_i(5, i);
  
  	/* New snapshot should see new value */
  	git_config_free(snapshot);
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  	cl_git_pass(git_config_get_int32(&i, snapshot, "old.value"));
  	cl_assert_equal_i(999, i);
  
  	cl_git_pass(p_unlink("config"));
  }
  
  static int count_me(const git_config_entry *entry, void *payload)
  {
  	int *n = (int *) payload;
  
  	GIT_UNUSED(entry);
  
  	(*n)++;
  
  	return 0;
  }
  
  void test_config_snapshot__multivar(void)
  {
  	int count;
  
  	count = 0;
  	cl_git_mkfile("config", "[old]\nvalue = 5\nvalue = 6\n");
  	cl_git_pass(git_config_open_ondisk(&cfg, "config"));
  	cl_git_pass(git_config_get_multivar_foreach(cfg, "old.value", NULL, count_me, &count));
  	cl_assert_equal_i(2, count);
  
  	count = 0;
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  	cl_git_pass(git_config_get_multivar_foreach(snapshot, "old.value", NULL, count_me, &count));
  	cl_assert_equal_i(2, count);
  
  	cl_git_pass(p_unlink("config"));
  }
  
  void test_config_snapshot__includes(void)
  {
  	int i;
  
  	cl_git_mkfile("including", "[include]\npath = included");
  	cl_git_mkfile("included", "[section]\nkey = 1\n");
  
  	cl_git_pass(git_config_open_ondisk(&cfg, "including"));
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  
  	cl_git_pass(git_config_get_int32(&i, snapshot, "section.key"));
  	cl_assert_equal_i(i, 1);
  
  	/* Rewrite "included" config */
  	cl_git_mkfile("included", "[section]\nkey = 11\n");
  
  	/* Assert that the live config changed, but snapshot remained the same */
  	cl_git_pass(git_config_get_int32(&i, cfg, "section.key"));
  	cl_assert_equal_i(i, 11);
  	cl_git_pass(git_config_get_int32(&i, snapshot, "section.key"));
  	cl_assert_equal_i(i, 1);
  
  	cl_git_pass(p_unlink("including"));
  	cl_git_pass(p_unlink("included"));
  }
  
  void test_config_snapshot__snapshot(void)
  {
  	git_config *snapshot_snapshot;
  	int i;
  
  	cl_git_mkfile("configfile", "[section]\nkey = 1\n");
  
  	cl_git_pass(git_config_open_ondisk(&cfg, "configfile"));
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  
  	cl_git_pass(git_config_snapshot(&snapshot_snapshot, snapshot));
  
  	cl_git_pass(git_config_get_int32(&i, snapshot_snapshot, "section.key"));
  	cl_assert_equal_i(i, 1);
  
  	git_config_free(snapshot_snapshot);
  
  	cl_git_pass(p_unlink("configfile"));
  }
  
  void test_config_snapshot__snapshot_from_in_memony(void)
  {
  	const char *configuration = "[section]\nkey = 1\n";
  	git_config_backend *backend;
  	int i;
  
  	cl_git_pass(git_config_new(&cfg));
  	cl_git_pass(git_config_backend_from_string(&backend, configuration, strlen(configuration)));
  	cl_git_pass(git_config_add_backend(cfg, backend, 0, NULL, 0));
  
  	cl_git_pass(git_config_snapshot(&snapshot, cfg));
  	cl_git_pass(git_config_get_int32(&i, snapshot, "section.key"));
  	cl_assert_equal_i(i, 1);
  }
  

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