install: tests: migrate to dir helpers

tests/func/test_install.py

@@ -1,23 +1,23 @@
 import os
+import pathlib
 import sys
 
 import pytest
 
 from dvc.exceptions import GitHookAlreadyExistsError
-from dvc.main import main
-from dvc.stage import Stage
-from dvc.utils import file_md5
+from dvc.remote import RemoteConfig
+from dvc.utils import file_md5, fspath
 
 
 @pytest.mark.skipif(
     sys.platform == "win32", reason="Git hooks aren't supported on Windows"
 )
 class TestInstall(object):
     def _hook(self, name):
-        return os.path.join(".git", "hooks", name)
+        return pathlib.Path(".git") / "hooks" / name
 
-    def test_should_create_hooks(self, git, dvc_repo):
-        assert main(["install"]) == 0
+    def test_create_hooks(self, scm, dvc):
+        scm.install()
 
         hooks_with_commands = [
             ("post-checkout", "exec dvc checkout"),
@@ -26,55 +26,46 @@ def test_should_create_hooks(self, git, dvc_repo):
         ]
 
         for fname, command in hooks_with_commands:
-            assert os.path.isfile(self._hook(fname))
+            hook_path = self._hook(fname)
+            assert hook_path.is_file()
+            assert command in hook_path.read_text()
 
-            with open(self._hook(fname), "r") as fobj:
-                assert command in fobj.read()
-
-    def test_should_fail_if_file_already_exists(self, git, dvc_repo):
-        with open(self._hook("post-checkout"), "w") as fobj:
-            fobj.write("hook content")
+    def test_fail_if_hook_exists(self, scm):
+        self._hook("post-checkout").write_text("hook content")
 
         with pytest.raises(GitHookAlreadyExistsError):
-            dvc_repo.scm.install()
-
-    def test_should_post_checkout_hook_checkout(self, repo_dir, git, dvc_repo):
-        assert main(["install"]) == 0
-
-        stage_file = repo_dir.FOO + Stage.STAGE_FILE_SUFFIX
-
-        dvc_repo.add(repo_dir.FOO)
-        dvc_repo.scm.add([".gitignore", stage_file])
-        dvc_repo.scm.commit("add")
-
-        os.unlink(repo_dir.FOO)
-        dvc_repo.scm.checkout("new_branch", create_new=True)
-
-        assert os.path.isfile(repo_dir.FOO)
+            scm.install()
 
-    def test_should_pre_push_hook_push(self, repo_dir, git, dvc_repo):
-        assert main(["install"]) == 0
+    def test_post_checkout(self, tmp_dir, scm, dvc):
+        scm.install()
+        tmp_dir.dvc_gen({"file": "file content"}, commit="add")
 
-        temp = repo_dir.mkdtemp()
-        git_remote = os.path.join(temp, "project.git")
-        storage_path = os.path.join(temp, "dvc_storage")
+        os.unlink("file")
+        scm.checkout("new_branch", create_new=True)
 
-        foo_checksum = file_md5(repo_dir.FOO)[0]
-        expected_cache_path = dvc_repo.cache.local.get(foo_checksum)
+        assert os.path.isfile("file")
 
-        ret = main(["remote", "add", "-d", "store", storage_path])
-        assert ret == 0
+    def test_pre_push_hook(self, tmp_dir, scm, dvc, tmp_path_factory):
+        scm.install()
 
-        ret = main(["add", repo_dir.FOO])
-        assert ret == 0
+        temp = tmp_path_factory.mktemp("external")
+        git_remote = temp / "project.git"
+        storage_path = temp / "dvc_storage"
 
-        stage_file = repo_dir.FOO + Stage.STAGE_FILE_SUFFIX
-        dvc_repo.scm.repo.index.add([stage_file, ".gitignore"])
-        dvc_repo.scm.repo.index.commit("commit message")
+        RemoteConfig(dvc.config).add(
+            "store", fspath(storage_path), default=True
+        )
+        tmp_dir.dvc_gen("file", "file_content", "commit message")
 
-        dvc_repo.scm.repo.clone(git_remote)
-        dvc_repo.scm.repo.create_remote("origin", git_remote)
+        file_checksum = file_md5("file")[0]
+        expected_storage_path = (
+            storage_path / file_checksum[:2] / file_checksum[2:]
+        )
 
-        dvc_repo.scm.repo.git.push("origin", "master")
+        scm.repo.clone(fspath(git_remote))
+        scm.repo.create_remote("origin", fspath(git_remote))
 
-        assert os.path.isfile(expected_cache_path)
+        assert not expected_storage_path.is_file()
+        scm.repo.git.push("origin", "master")
+        assert expected_storage_path.is_file()
+        assert expected_storage_path.read_text() == "file_content"