fix: do not propagate build-base to snap.yaml

Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>

snapcraft/meta/__init__.py

@@ -16,5 +16,12 @@
 
 """Snap metadata definitions and helpers."""
 
-from .extracted_metadata import ExtractedMetadata  # noqa: F401
-from .metadata import extract_metadata  # noqa: F401
+from .extracted_metadata import ExtractedMetadata
+from .metadata import extract_metadata
+from .snap_yaml import SnapMetadata
+
+__all__ = [
+    "extract_metadata",
+    "ExtractedMetadata",
+    "SnapMetadata",
+]

snapcraft/meta/snap_yaml.py

@@ -235,7 +235,6 @@ class SnapMetadata(SnapcraftMetadata):
     type: Optional[str]
     architectures: List[str]
     base: Optional[str]
-    build_base: Optional[str]
     assumes: Optional[List[str]]
     epoch: Optional[str]
     apps: Optional[Dict[str, SnapApp]]

tests/spread/core24/environment/snaps/paths-all-null/expected_snap.yaml

@@ -9,7 +9,6 @@ description: |
 architectures:
 - amd64
 base: core24
-build-base: devel
 apps:
   paths-all-null:
     command: usr/bin/hello

tests/spread/core24/environment/snaps/paths-one-null/expected_snap.yaml

@@ -8,7 +8,6 @@ description: |
 architectures:
 - amd64
 base: core24
-build-base: devel
 apps:
   paths-one-null:
     command: usr/bin/hello

tests/spread/core24/environment/snaps/paths-user-defined/expected_snap.yaml

@@ -5,7 +5,6 @@ description: Defining LD_LIBRARY_PATH or PATH should override default values.
 architectures:
 - amd64
 base: core24
-build-base: devel
 apps:
   paths-user-defined:
     command: usr/bin/hello

tests/spread/core24/environment/snaps/staged-common-library/expected_snap.yaml

@@ -7,7 +7,6 @@ description: |
 architectures:
 - amd64
 base: core24
-build-base: devel
 apps:
   staged-common-library:
     command: test-cmd

tests/unit/conftest.py

@@ -367,3 +367,63 @@ def launched_environment(
             yield mock_instance
 
     return FakeProvider()
+
+
+@pytest.fixture()
+def extra_project_params():
+    """Configuration fixture for the Project used by the default services."""
+    return {"confinement": "devmode"}
+
+
+# The factory setup from CraftApplication is imported at the fixture level.
+# pylint: disable=import-outside-toplevel
+
+
+@pytest.fixture()
+def default_project(extra_project_params):
+    from craft_application.models import SummaryStr, VersionStr
+
+    from snapcraft.models.project import Project
+
+    parts = extra_project_params.pop("parts", {})
+
+    return Project(
+        name="default",
+        version=VersionStr("1.0"),
+        summary=SummaryStr("default project"),
+        description="default project",
+        base="core24",
+        build_base="devel",
+        parts=parts,
+        license="MIT",
+        **extra_project_params,
+    )
+
+
+@pytest.fixture()
+def default_factory(default_project):
+    from snapcraft.application import APP_METADATA
+    from snapcraft.services import SnapcraftServiceFactory
+
+    factory = SnapcraftServiceFactory(
+        app=APP_METADATA,
+        project=default_project,
+    )
+    return factory
+
+
+@pytest.fixture()
+def package_service(default_project, default_factory):
+    from snapcraft.application import APP_METADATA
+    from snapcraft.services import Package
+
+    return Package(
+        app=APP_METADATA,
+        project=default_project,
+        services=default_factory,
+        platform="amd64",
+        build_for="amd64",
+    )
+
+
+# pylint: enable=import-outside-toplevel

tests/unit/meta/test_snap_yaml.py

@@ -124,6 +124,70 @@ def test_assumes(simple_project, new_dir):
     )
 
 
+def test_build_base_devel(simple_project, new_dir):
+    """Devel base return devel grade and no build-base in snap.yaml."""
+    snap_yaml.write(
+        simple_project(build_base="devel"),
+        prime_dir=Path(new_dir),
+        arch="amd64",
+    )
+    yaml_file = Path("meta/snap.yaml")
+    assert yaml_file.is_file()
+
+    content = yaml_file.read_text()
+    assert content == textwrap.dedent(
+        """\
+        name: mytest
+        version: 1.29.3
+        summary: Single-line elevator pitch for your amazing snap
+        description: test-description
+        architectures:
+        - amd64
+        base: core22
+        apps:
+          app1:
+            command: bin/mytest
+        confinement: strict
+        grade: devel
+        environment:
+          LD_LIBRARY_PATH: ${SNAP_LIBRARY_PATH}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
+          PATH: $SNAP/usr/sbin:$SNAP/usr/bin:$SNAP/sbin:$SNAP/bin:$PATH
+        """
+    )
+
+
+def test_build_base_stable(simple_project, new_dir):
+    """Stable base return stable grade and no build-base in snap.yaml."""
+    snap_yaml.write(
+        simple_project(build_base="core22"),
+        prime_dir=Path(new_dir),
+        arch="amd64",
+    )
+    yaml_file = Path("meta/snap.yaml")
+    assert yaml_file.is_file()
+
+    content = yaml_file.read_text()
+    assert content == textwrap.dedent(
+        """\
+        name: mytest
+        version: 1.29.3
+        summary: Single-line elevator pitch for your amazing snap
+        description: test-description
+        architectures:
+        - amd64
+        base: core22
+        apps:
+          app1:
+            command: bin/mytest
+        confinement: strict
+        grade: stable
+        environment:
+          LD_LIBRARY_PATH: ${SNAP_LIBRARY_PATH}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
+          PATH: $SNAP/usr/sbin:$SNAP/usr/bin:$SNAP/sbin:$SNAP/bin:$PATH
+        """
+    )
+
+
 def test_links_scalars(simple_project, new_dir):
     snap_yaml.write(
         simple_project(

tests/unit/services/test_package.py

@@ -0,0 +1,74 @@
+# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
+#
+# Copyright 2024 Canonical Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Tests for the Snapcraft Package service."""
+
+from pathlib import Path
+
+from snapcraft import linters, meta, pack
+
+
+def test_pack(package_service, default_factory, mocker):
+    mock_pack_snap = mocker.patch.object(pack, "pack_snap")
+    mock_linters_run = mocker.patch.object(linters, "run_linters")
+    mock_linters_report = mocker.patch.object(linters, "report")
+
+    package_service.pack(prime_dir=Path("prime"), dest=Path())
+
+    # Check that the regular pack.pack_snap() function was called with the correct
+    # parameters.
+    mock_pack_snap.assert_called_once_with(
+        Path("prime"),
+        name="default",
+        version="1.0",
+        compression="xz",
+        output=".",
+        target_arch="amd64",
+    )
+
+
+def test_metadata(package_service, default_factory, new_dir):
+    default_factory.set_kwargs(
+        "lifecycle", work_dir=Path("work"), cache_dir=new_dir, build_for="amd64"
+    )
+
+    assert package_service.metadata == meta.SnapMetadata(
+        name="default",
+        title=None,
+        version="1.0",
+        summary="default project",
+        description="default project",
+        license="MIT",
+        type=None,
+        architectures=["amd64"],
+        base="core24",
+        assumes=None,
+        epoch=None,
+        apps=None,
+        confinement="devmode",
+        grade="devel",
+        environment={
+            "LD_LIBRARY_PATH": "${SNAP_LIBRARY_PATH}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}",
+            "PATH": "$SNAP/usr/sbin:$SNAP/usr/bin:$SNAP/sbin:$SNAP/bin:$PATH",
+        },
+        plugs=None,
+        slots=None,
+        hooks=None,
+        layout=None,
+        system_usernames=None,
+        provenance=None,
+        links=None,
+    )