Fix 1.0.0 issues

src/poetry_plugin_export/command.py

@@ -41,6 +41,10 @@ class ExportCommand(InstallerCommand):
         option("with-credentials", None, "Include credentials for extra indices."),
     ]
 
+    @property
+    def non_optional_groups(self) -> set[str]:
+        return {"default"}
+
     def handle(self) -> None:
         fmt = self.option("format")
 

src/poetry_plugin_export/exporter.py

@@ -30,7 +30,7 @@ def __init__(self, poetry: Poetry) -> None:
         self._with_credentials = False
         self._with_urls = True
         self._extras: list[str] = []
-        self._groups: Iterable[str] | None = None
+        self._groups: Iterable[str] = ["default"]
 
     @classmethod
     def is_format_supported(cls, fmt: str) -> bool:
@@ -78,14 +78,11 @@ def _export_requirements_txt(self, cwd: Path, output: IO | str) -> None:
         content = ""
         dependency_lines = set()
 
-        if self._groups is not None:
-            root = self._poetry.package.with_dependency_groups(
-                list(self._groups), only=True
-            )
-        else:
-            root = self._poetry.package.without_optional_dependency_groups()
+        root = self._poetry.package.with_dependency_groups(
+            list(self._groups), only=True
+        )
 
-        locked_repository = self._poetry.locker.locked_repository(True)
+        locked_repository = self._poetry.locker.locked_repository()
 
         pool = Pool(ignore_repository_names=True)
         pool.add_repository(locked_repository)
@@ -98,17 +95,9 @@ def _export_requirements_txt(self, cwd: Path, output: IO | str) -> None:
         ops = solver.solve().calculate_operations()
         packages = sorted((op.package for op in ops), key=lambda pkg: pkg.name)
 
-        # Get project dependencies.
-        if self._groups is not None:
-            root_package = self._poetry.package.with_dependency_groups(
-                list(self._groups), only=True
-            )
-        else:
-            root_package = self._poetry.package.without_optional_dependency_groups()
-
         for dependency_package in self._poetry.locker.get_project_dependency_packages(
-            project_requires=root_package.all_requires,
-            project_python_marker=root_package.python_marker,
+            project_requires=root.all_requires,
+            project_python_marker=root.python_marker,
             extras=self._extras,
         ):
             line = ""
@@ -161,11 +150,9 @@ def _export_requirements_txt(self, cwd: Path, output: IO | str) -> None:
 
                     hashes.append(f"{algorithm}:{h}")
 
-                if hashes:
-                    line += " \\\n"
-                    for i, h in enumerate(hashes):
-                        suffix = " \\\n" if i < len(hashes) - 1 else ""
-                        line += f"    --hash={h}{suffix}"
+                for h in hashes:
+                    line += f" \\\n    --hash={h}"
+
             dependency_lines.add(line)
 
         content += "\n".join(sorted(dependency_lines))

tests/command/test_command_export.py

@@ -50,6 +50,16 @@
 foo = "^1.0"
 bar = { version = "^1.1", optional = true }
 
+[tool.poetry.group.dev.dependencies]
+baz = "^2.0"
+
+[tool.poetry.group.opt]
+optional = true
+
+[tool.poetry.group.opt.dependencies]
+opt = "^2.2"
+
+
 [tool.poetry.extras]
 feature_bar = ["bar"]
 """
@@ -59,6 +69,8 @@
 def setup(repo: Repository) -> None:
     repo.add_package(Package("foo", "1.0.0"))
     repo.add_package(Package("bar", "1.1.0"))
+    repo.add_package(Package("baz", "2.0.0"))
+    repo.add_package(Package("opt", "2.2.0"))
 
 
 @pytest.fixture
@@ -88,7 +100,7 @@ def _export_requirements(tester: CommandTester, poetry: Poetry) -> None:
 foo==1.0.0 ; {MARKER_PY}
 """
 
-    assert expected == content
+    assert content == expected
 
 
 def test_export_exports_requirements_txt_file_locks_if_no_lock_file(
@@ -116,7 +128,7 @@ def test_export_prints_to_stdout_by_default(tester: CommandTester, do_lock: None
     expected = f"""\
 foo==1.0.0 ; {MARKER_PY}
 """
-    assert expected == tester.io.fetch_output()
+    assert tester.io.fetch_output() == expected
 
 
 def test_export_uses_requirements_txt_format_by_default(
@@ -126,7 +138,34 @@ def test_export_uses_requirements_txt_format_by_default(
     expected = f"""\
 foo==1.0.0 ; {MARKER_PY}
 """
-    assert expected == tester.io.fetch_output()
+    assert tester.io.fetch_output() == expected
+
+
+@pytest.mark.parametrize(
+    "options, expected",
+    [
+        ("", f"foo==1.0.0 ; {MARKER_PY}\n"),
+        ("--with dev", f"baz==2.0.0 ; {MARKER_PY}\nfoo==1.0.0 ; {MARKER_PY}\n"),
+        ("--with opt", f"foo==1.0.0 ; {MARKER_PY}\nopt==2.2.0 ; {MARKER_PY}\n"),
+        (
+            "--with dev,opt",
+            f"baz==2.0.0 ; {MARKER_PY}\nfoo==1.0.0 ; {MARKER_PY}\nopt==2.2.0 ;"
+            f" {MARKER_PY}\n",
+        ),
+        ("--without default", "\n"),
+        ("--without dev", f"foo==1.0.0 ; {MARKER_PY}\n"),
+        ("--without opt", f"foo==1.0.0 ; {MARKER_PY}\n"),
+        ("--without default,dev,opt", "\n"),
+        ("--only default", f"foo==1.0.0 ; {MARKER_PY}\n"),
+        ("--only dev", f"baz==2.0.0 ; {MARKER_PY}\n"),
+        ("--only default,dev", f"baz==2.0.0 ; {MARKER_PY}\nfoo==1.0.0 ; {MARKER_PY}\n"),
+    ],
+)
+def test_export_groups(
+    tester: CommandTester, do_lock: None, options: str, expected: str
+):
+    tester.execute(options)
+    assert tester.io.fetch_output() == expected
 
 
 def test_export_includes_extras_by_flag(tester: CommandTester, do_lock: None):
@@ -135,7 +174,7 @@ def test_export_includes_extras_by_flag(tester: CommandTester, do_lock: None):
 bar==1.1.0 ; {MARKER_PY}
 foo==1.0.0 ; {MARKER_PY}
 """
-    assert expected == tester.io.fetch_output()
+    assert tester.io.fetch_output() == expected
 
 
 def test_export_with_urls(