1 files changed, 57 insertions, 0 deletions
diff --git a/flit_core/flit_core/tests/test_build_thyself.py b/flit_core/flit_core/tests/test_build_thyself.py
new file mode 100644
index 0000000..ad15819
--- /dev/null
+++ b/flit_core/flit_core/tests/test_build_thyself.py
@@ -0,0 +1,57 @@
+"""Tests of flit_core building itself"""
+import os
+import os.path as osp
+import pytest
+import tarfile
+from testpath import assert_isdir, assert_isfile
+import zipfile
+
+from flit_core import buildapi
+
+@pytest.fixture()
+def cwd_project():
+    proj_dir = osp.dirname(osp.dirname(osp.abspath(buildapi.__file__)))
+    if not osp.isfile(osp.join(proj_dir, 'pyproject.toml')):
+        pytest.skip("need flit_core source directory")
+
+    old_cwd = os.getcwd()
+    try:
+        os.chdir(proj_dir)
+        yield
+    finally:
+        os.chdir(old_cwd)
+
+
+def test_prepare_metadata(tmp_path, cwd_project):
+    tmp_path = str(tmp_path)
+    dist_info = buildapi.prepare_metadata_for_build_wheel(tmp_path)
+
+    assert dist_info.endswith('.dist-info')
+    assert dist_info.startswith('flit_core')
+    dist_info = osp.join(tmp_path, dist_info)
+    assert_isdir(dist_info)
+
+    assert_isfile(osp.join(dist_info, 'WHEEL'))
+    assert_isfile(osp.join(dist_info, 'METADATA'))
+
+
+def test_wheel(tmp_path, cwd_project):
+    tmp_path = str(tmp_path)
+    filename = buildapi.build_wheel(tmp_path)
+
+    assert filename.endswith('.whl')
+    assert filename.startswith('flit_core')
+    path = osp.join(tmp_path, filename)
+    assert_isfile(path)
+    assert zipfile.is_zipfile(path)
+
+
+def test_sdist(tmp_path, cwd_project):
+    tmp_path = str(tmp_path)
+    filename = buildapi.build_sdist(tmp_path)
+
+    assert filename.endswith('.tar.gz')
+    assert filename.startswith('flit_core')
+    path = osp.join(tmp_path, filename)
+    assert_isfile(path)
+    assert tarfile.is_tarfile(path)