Add tests

Author: hoodmane

tests/test_paths.py

@@ -0,0 +1,65 @@
+from sphinx_js.analyzer_utils import search_node_modules
+import pytest
+from pathlib import Path
+from sphinx.errors import SphinxError
+
+@pytest.fixture
+def global_install(tmp_path_factory, monkeypatch):
+    tmpdir = tmp_path_factory.mktemp("my_program_global")
+    my_program = tmpdir/ "my_program"
+    my_program.write_text("")
+    my_program.chmod(0o777)
+    monkeypatch.setenv("PATH", tmpdir, prepend=":")
+    return tmpdir
+
+
+@pytest.fixture
+def no_local_install(tmp_path_factory):
+    my_program = tmp_path_factory.mktemp("my_program_local")
+    working_dir = my_program / "a" / "b" / "c"
+    return working_dir
+
+my_prog_path = Path("my_program/sub/bin.js")
+
+@pytest.fixture
+def local_install(no_local_install):
+    working_dir = no_local_install
+    bin_path = working_dir.parents[1] / "node_modules" / my_prog_path
+    bin_path.parent.mkdir(parents=True)
+    bin_path.write_text("")
+    return (working_dir, bin_path)
+
+@pytest.fixture
+def env_install(monkeypatch):
+    env_path = Path("/a/b/c")
+    monkeypatch.setenv("SPHINX_JS_NODE_MODULES", env_path)
+    return env_path / my_prog_path
+
+
+def test_global(global_install, no_local_install):
+    # If no env or local, use global
+    working_dir = no_local_install
+    assert search_node_modules("my_program", my_prog_path, working_dir) == str(global_install / "my_program")
+
+def test_node_modules1(global_install, local_install):
+    # If local and global, use local
+    [working_dir, bin_path] = local_install
+    assert search_node_modules("my_program", my_prog_path, working_dir) == str(bin_path)
+
+def test_node_modules2(local_install):
+    # If local only, use local
+    [working_dir, bin_path] = local_install
+    assert search_node_modules("my_program", my_prog_path, working_dir) == str(bin_path)
+
+def test_env1(env_install):
+    # If env only, use env
+    assert search_node_modules("my_program", my_prog_path, "/x/y/z") == str(env_install)
+
+def test_env2(env_install, local_install, global_install):
+    # If env, local, and global, use env
+    [working_dir, _] = local_install
+    assert search_node_modules("my_program", my_prog_path, working_dir) == str(env_install)
+
+def test_err():
+    with pytest.raises(SphinxError, match='my_program was not found. Install it using "npm install my_program"'):
+        search_node_modules("my_program", my_prog_path, "/a/b/c")