fix(snapcraft_legacy): get assertions for aliased snaps

Signed-off-by: Callahan Kovacs <callahan.kovacs@canonical.com>

snapcraft_legacy/internal/build_providers/_snap.py

@@ -169,11 +169,7 @@ def _set_data(self) -> None:
 
             if not snap_revision.startswith("x") and snap_channel:
                 switch_cmd = [
-                    "snap",
-                    "switch",
-                    self.snap_instance_name,
-                    "--channel",
-                    snap_channel,
+                    "snap", "switch", self.snap_name, "--channel", snap_channel
                 ]
 
             if snap_revision.startswith("x"):

snapcraft_legacy/internal/repo/snaps.py

@@ -179,7 +179,13 @@ def local_download(self, *, snap_path: str, assertion_path: str) -> None:
         # We write an empty assertions file for dangerous installs to
         # have a consistent interface.
         if self.has_assertions():
-            assertions.append(["snap-declaration", "snap-name={}".format(self.name)])
+            assertions.append(
+                [
+                    "snap-declaration",
+                    # use the snap name without any alias
+                    f"snap-name={self.name.partition('_')[0]}"
+                ]
+            )
             assertions.append(
                 [
                     "snap-revision",

tests/legacy/unit/build_providers/test_snap.py

@@ -162,6 +162,124 @@ def test_snapcraft_installed_on_host_from_store(self):
             ),
         )
 
+    def test_snapcraft_installed_on_host_aliased_from_store(self):
+        self.fake_snapd.snaps_result = [
+            {
+                "name": "snapd",
+                "confinement": "strict",
+                "id": "2kkitQ",
+                "channel": "edge",
+                "revision": "1",
+                "tracking-channel": "latest/edge",
+            },
+            {
+                "name": "core18",
+                "confinement": "strict",
+                "id": "2kkibb",
+                "channel": "stable",
+                "revision": "123",
+                "tracking-channel": "latest/beta",
+            },
+            {
+                "name": "snapcraft_alias",
+                "confinement": "classic",
+                "id": "3lljuR",
+                "channel": "edge",
+                "revision": "345",
+                "tracking-channel": "latest/candidate",
+            },
+        ]
+        self.get_assertion_mock.side_effect = [
+            b"fake-assertion-account-store",
+            b"fake-assertion-declaration-snapd",
+            b"fake-assertion-revision-snapd-1",
+            b"fake-assertion-account-store",
+            b"fake-assertion-declaration-core18",
+            b"fake-assertion-revision-core18-123",
+            b"fake-assertion-account-store",
+            b"fake-assertion-declaration-snapcraft",
+            b"fake-assertion-revision-snapcraft-345",
+        ]
+
+        snap_injector = SnapInjector(
+            registry_filepath=self.registry_filepath,
+            runner=self.provider._run,
+            file_pusher=self.provider._push_file,
+        )
+        snap_injector.add("snapd")
+        snap_injector.add("core18")
+        snap_injector.add("snapcraft_alias")
+        snap_injector.apply()
+
+        get_assertion_calls = [
+            call(
+                [
+                    "account-key",
+                    "public-key-sha3-384=BWDEoaqyr25nF5SNCvEv2v7QnM9QsfCc0PBMYD_i2NGSQ32EF2d4D0hqUel3m8ul",
+                ]
+            ),
+            call(["snap-declaration", "snap-name=snapd"]),
+            call(["snap-revision", "snap-revision=1", "snap-id=2kkitQ"]),
+            call(
+                [
+                    "account-key",
+                    "public-key-sha3-384=BWDEoaqyr25nF5SNCvEv2v7QnM9QsfCc0PBMYD_i2NGSQ32EF2d4D0hqUel3m8ul",
+                ]
+            ),
+            call(["snap-declaration", "snap-name=core18"]),
+            call(["snap-revision", "snap-revision=123", "snap-id=2kkibb"]),
+            call(
+                [
+                    "account-key",
+                    "public-key-sha3-384=BWDEoaqyr25nF5SNCvEv2v7QnM9QsfCc0PBMYD_i2NGSQ32EF2d4D0hqUel3m8ul",
+                ]
+            ),
+            call(["snap-declaration", "snap-name=snapcraft"]),
+            call(["snap-revision", "snap-revision=345", "snap-id=3lljuR"]),
+        ]
+        self.get_assertion_mock.assert_has_calls(get_assertion_calls)
+        self.provider.run_mock.assert_has_calls(
+            [
+                call(["snap", "set", "system", "experimental.snapd-snap=true"]),
+                call(["snap", "set", "system", ANY]),
+                call(["snap", "watch", "--last=auto-refresh?"]),
+                call(["snap", "ack", "/var/tmp/snapd.assert"]),
+                call(["snap", "install", "/var/tmp/snapd.snap"]),
+                call(["snap", "switch", "snapd", "--channel", "latest/edge"]),
+                call(["snap", "ack", "/var/tmp/core18.assert"]),
+                call(["snap", "install", "/var/tmp/core18.snap"]),
+                call(["snap", "switch", "core18", "--channel", "latest/beta"]),
+                call(["snap", "ack", "/var/tmp/snapcraft_alias.assert"]),
+                call(["snap", "install", "--classic", "/var/tmp/snapcraft_alias.snap"]),
+                call(["snap", "switch", "snapcraft", "--channel", "latest/candidate"]),
+            ]
+        )
+        self.provider.push_file_mock.assert_has_calls(
+            [
+                call(source=ANY, destination="/var/tmp/snapd.snap"),
+                call(source=ANY, destination="/var/tmp/snapd.assert"),
+                call(source=ANY, destination="/var/tmp/core18.snap"),
+                call(source=ANY, destination="/var/tmp/core18.assert"),
+                call(source=ANY, destination="/var/tmp/snapcraft_alias.snap"),
+                call(source=ANY, destination="/var/tmp/snapcraft_alias.assert"),
+            ]
+        )
+        self.assertThat(
+            self.registry_filepath,
+            FileContains(
+                dedent(
+                    """\
+                    core18:
+                    - revision: '123'
+                    snapcraft:
+                    - revision: '345'
+                    snapd:
+                    - revision: '1'
+                    """
+                )
+            ),
+        )
+
     def test_snapcraft_installed_on_host_from_store_but_injection_disabled(self):
         self.useFixture(fixture_setup.FakeStore())
 

tests/legacy/unit/repo/test_snaps.py

@@ -348,6 +348,48 @@ def test_download_from_host(self):
             ]
         )
 
+    def test_download_from_host_alias(self):
+        """Download an aliased snap from the host."""
+        fake_get_assertion = fixtures.MockPatch(
+            "snapcraft_legacy.internal.repo.snaps.get_assertion",
+            return_value=b"foo-assert",
+        )
+        self.useFixture(fake_get_assertion)
+
+        self.fake_snapd.snaps_result = [
+            {
+                "id": "fake-snap-id",
+                "name": "fake-snap_alias",
+                "channel": "stable",
+                "revision": "10",
+            }
+        ]
+
+        snap_pkg = snaps.SnapPackage("fake-snap_alias/strict/stable")
+        snap_pkg.local_download(
+            snap_path="fake-snap.snap", assertion_path="fake-snap.assert"
+        )
+
+        self.assertThat("fake-snap.snap", FileExists())
+        self.assertThat(
+            "fake-snap.assert", FileContains("foo-assert\nfoo-assert\nfoo-assert\n")
+        )
+        fake_get_assertion.mock.assert_has_calls(
+            [
+                mock.call(
+                    [
+                        "account-key",
+                        "public-key-sha3-384=BWDEoaqyr25nF5SNCvEv2v7QnM9QsfCc0PBMYD_i2NGSQ32EF2d4D0hqUel3m8ul",
+                    ]
+                ),
+                # uses the non-aliased name
+                mock.call(["snap-declaration", "snap-name=fake-snap"]),
+                mock.call(
+                    ["snap-revision", "snap-revision=10", "snap-id=fake-snap-id"]
+                ),
+            ]
+        )
+
     def test_download_from_host_dangerous(self):
         fake_get_assertion = fixtures.MockPatch(
             "snapcraft_legacy.internal.repo.snaps.get_assertion",