thodg/libgit2/tests/merge/workdir/recursive.c

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• Hash : 78859c63
  Author :
  Date : 2015-11-20T17:33:49
  

  merge: handle conflicts in recursive base building When building a recursive merge base, allow conflicts to occur. Use the file (with conflict markers) as the common ancestor. The user has already seen and dealt with this conflict by virtue of having a criss-cross merge. If they resolved this conflict identically in both branches, then there will be no conflict in the result. This is the best case scenario. If they did not resolve the conflict identically in the two branches, then we will generate a new conflict. If the user is simply using standard conflict output then the results will be fairly sensible. But if the user is using a mergetool or using diff3 output, then the common ancestor will be a conflict file (itself with diff3 output, haha!). This is quite terrible, but it matches git's behavior.

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• tests/merge/workdir/recursive.c

• #include "clar_libgit2.h"
  #include "git2/repository.h"
  #include "git2/merge.h"
  #include "merge.h"
  #include "../merge_helpers.h"
  #include "../conflict_data.h"
  
  static git_repository *repo;
  
  #define TEST_REPO_PATH "merge-recursive"
  
  void test_merge_workdir_recursive__initialize(void)
  {
  	repo = cl_git_sandbox_init(TEST_REPO_PATH);
  }
  
  void test_merge_workdir_recursive__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  }
  
  void test_merge_workdir_recursive__writes_conflict_with_virtual_base(void)
  {
  	git_index *index;
  	git_merge_options opts = GIT_MERGE_OPTIONS_INIT;
  	git_buf conflicting_buf = GIT_BUF_INIT;
  
  	struct merge_index_entry merge_index_entries[] = {
  		{ 0100644, "ffb36e513f5fdf8a6ba850a20142676a2ac4807d", 0, "asparagus.txt" },
  		{ 0100644, "68f6182f4c85d39e1309d97c7e456156dc9c0096", 0, "beef.txt" },
  		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
  		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
  		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
  		{ 0100644, "fa567f568ed72157c0c617438d077695b99d9aac", 1, "veal.txt" },
  		{ 0100644, "21950d5e4e4d1a871b4dfcf72ecb6b9c162c434e", 2, "veal.txt" },
  		{ 0100644, "3855170cef875708da06ab9ad7fc6a73b531cda1", 3, "veal.txt" },
  	};
  
  	cl_git_pass(merge_branches(repo, GIT_REFS_HEADS_DIR "branchF-1", GIT_REFS_HEADS_DIR "branchF-2", &opts, NULL));
  
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(merge_test_index(index, merge_index_entries, 8));
  
  	cl_git_pass(git_futils_readbuffer(&conflicting_buf, "merge-recursive/veal.txt"));
  
  	cl_assert_equal_s(CONFLICTING_RECURSIVE_F1_TO_F2, conflicting_buf.ptr);
  	
  	git_index_free(index);
  	git_buf_free(&conflicting_buf);
  }
  
  void test_merge_workdir_recursive__conflicting_merge_base_with_diff3(void)
  {
  	git_index *index;
  	git_merge_options opts = GIT_MERGE_OPTIONS_INIT;
  	git_checkout_options checkout_opts = GIT_CHECKOUT_OPTIONS_INIT;
  	git_buf conflicting_buf = GIT_BUF_INIT;
  
  	struct merge_index_entry merge_index_entries[] = {
  		{ 0100644, "ffb36e513f5fdf8a6ba850a20142676a2ac4807d", 0, "asparagus.txt" },
  		{ 0100644, "68f6182f4c85d39e1309d97c7e456156dc9c0096", 0, "beef.txt" },
  		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
  		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
  		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
  		{ 0100644, "cd17a91513f3aee9e44114d1ede67932dd41d2fc", 1, "veal.txt" },
  		{ 0100644, "d604c75019c282144bdbbf3fd3462ba74b240efc", 2, "veal.txt" },
  		{ 0100644, "37a5054a9f9b4628e3924c5cb8f2147c6e2a3efc", 3, "veal.txt" },
  	};
  
  	opts.file_flags |= GIT_MERGE_FILE_STYLE_DIFF3;
  	checkout_opts.checkout_strategy |= GIT_CHECKOUT_CONFLICT_STYLE_DIFF3;
  
  	cl_git_pass(merge_branches(repo, GIT_REFS_HEADS_DIR "branchH-1", GIT_REFS_HEADS_DIR "branchH-2", &opts, &checkout_opts));
  
  	cl_git_pass(git_repository_index(&index, repo));
  	cl_assert(merge_test_index(index, merge_index_entries, 8));
  
  	cl_git_pass(git_futils_readbuffer(&conflicting_buf, "merge-recursive/veal.txt"));
  
  	cl_assert_equal_s(CONFLICTING_RECURSIVE_H1_TO_H2_WITH_DIFF3, conflicting_buf.ptr);
  
  	git_index_free(index);
  	git_buf_free(&conflicting_buf);
  }
  

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