merge: tests for bare repo merge analysis

dupe of workdir/analysis.c against a bare repo.

1 files changed, 170 insertions, 0 deletions

diff --git a/tests/merge/trees/analysis.c b/tests/merge/trees/analysis.c
new file mode 100644
index 000000000..c57d8c2ed
--- /dev/null
+++ b/tests/merge/trees/analysis.c
@@ -0,0 +1,170 @@
+#include "clar_libgit2.h"
+#include "git2/repository.h"
+#include "git2/merge.h"
+#include "git2/annotated_commit.h"
+#include "git2/sys/index.h"
+#include "merge.h"
+#include "../merge_helpers.h"
+#include "refs.h"
+#include "posix.h"
+
+static git_repository *repo;
+static git_index *repo_index;
+
+#define TEST_REPO_PATH "merge-resolve.git"
+#define TEST_INDEX_PATH TEST_REPO_PATH "/index"
+
+#define UPTODATE_BRANCH         "master"
+#define PREVIOUS_BRANCH         "previous"
+
+#define FASTFORWARD_BRANCH      "ff_branch"
+#define FASTFORWARD_ID          "fd89f8cffb663ac89095a0f9764902e93ceaca6a"
+
+#define NOFASTFORWARD_BRANCH    "branch"
+#define NOFASTFORWARD_ID        "7cb63eed597130ba4abb87b3e544b85021905520"
+
+
+/* Fixture setup and teardown */
+void test_merge_trees_analysis__initialize(void)
+{
+    repo = cl_git_sandbox_init(TEST_REPO_PATH);
+    git_repository_index(&repo_index, repo);
+}
+
+void test_merge_trees_analysis__cleanup(void)
+{
+    git_index_free(repo_index);
+    cl_git_sandbox_cleanup();
+}
+
+static void analysis_from_branch(
+    git_merge_analysis_t *merge_analysis,
+    git_merge_preference_t *merge_pref,
+    const char *our_branchname,
+    const char *their_branchname)
+{
+    git_buf our_refname = GIT_BUF_INIT;
+    git_buf their_refname = GIT_BUF_INIT;
+    git_reference *our_ref;
+    git_reference *their_ref;
+    git_annotated_commit *their_head;
+
+    if (our_branchname != NULL) {
+        cl_git_pass(git_buf_printf(&our_refname, "%s%s", GIT_REFS_HEADS_DIR, our_branchname));
+        cl_git_pass(git_reference_lookup(&our_ref, repo, git_buf_cstr(&our_refname)));
+    } else {
+        cl_git_pass(git_reference_lookup(&our_ref, repo, GIT_HEAD_FILE));
+    }
+
+    cl_git_pass(git_buf_printf(&their_refname, "%s%s", GIT_REFS_HEADS_DIR, their_branchname));
+
+    cl_git_pass(git_reference_lookup(&their_ref, repo, git_buf_cstr(&their_refname)));
+    cl_git_pass(git_annotated_commit_from_ref(&their_head, repo, their_ref));
+
+    cl_git_pass(git_merge_analysis_for_ref(merge_analysis, merge_pref, repo, our_ref, (const git_annotated_commit **)&their_head, 1));
+
+    git_buf_dispose(&our_refname);
+    git_buf_dispose(&their_refname);
+    git_annotated_commit_free(their_head);
+    git_reference_free(our_ref);
+    git_reference_free(their_ref);
+}
+
+void test_merge_trees_analysis__fastforward(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, FASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL|GIT_MERGE_ANALYSIS_FASTFORWARD, merge_analysis);
+}
+
+void test_merge_trees_analysis__no_fastforward(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
+}
+
+void test_merge_trees_analysis__uptodate(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, UPTODATE_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
+}
+
+void test_merge_trees_analysis__uptodate_merging_prev_commit(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, PREVIOUS_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
+}
+
+void test_merge_trees_analysis__unborn(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+    git_buf master = GIT_BUF_INIT;
+
+    git_buf_joinpath(&master, git_repository_path(repo), "refs/heads/master");
+    p_unlink(git_buf_cstr(&master));
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_FASTFORWARD|GIT_MERGE_ANALYSIS_UNBORN, merge_analysis);
+
+    git_buf_dispose(&master);
+}
+
+void test_merge_trees_analysis__fastforward_with_config_noff(void)
+{
+    git_config *config;
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    git_repository_config(&config, repo);
+    git_config_set_string(config, "merge.ff", "false");
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, FASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL|GIT_MERGE_ANALYSIS_FASTFORWARD, merge_analysis);
+
+    cl_assert_equal_i(GIT_MERGE_PREFERENCE_NO_FASTFORWARD, (merge_pref & GIT_MERGE_PREFERENCE_NO_FASTFORWARD));
+}
+
+void test_merge_trees_analysis__no_fastforward_with_config_ffonly(void)
+{
+    git_config *config;
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    git_repository_config(&config, repo);
+    git_config_set_string(config, "merge.ff", "only");
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
+
+    cl_assert_equal_i(GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY, (merge_pref & GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY));
+}
+
+void test_merge_trees_analysis__between_uptodate_refs(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, NOFASTFORWARD_BRANCH, PREVIOUS_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
+}
+
+void test_merge_trees_analysis__between_noff_refs(void)
+{
+    git_merge_analysis_t merge_analysis;
+    git_merge_preference_t merge_pref;
+
+    analysis_from_branch(&merge_analysis, &merge_pref, "branch", FASTFORWARD_BRANCH);
+    cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
+}