tests/frontend/buildcheckout.py: Add default target test with junction

Test that `bst build` does not fail in a project where the list of
default targets includes a junction (junctions cannot be built).

4 files changed, 56 insertions, 0 deletions

diff --git a/tests/frontend/buildcheckout.py b/tests/frontend/buildcheckout.py
index 156fab990..b35b14820 100644
--- a/tests/frontend/buildcheckout.py
+++ b/tests/frontend/buildcheckout.py
@@ -580,6 +580,53 @@ def test_build_checkout_junction(cli, tmpdir, datafiles):
     assert contents == 'animal=Pony\n'
 
 
+# Test that default targets work with projects with junctions
+@pytest.mark.datafiles(DATA_DIR + "_world")
+def test_build_checkout_junction_default_targets(cli, tmpdir, datafiles):
+    project = os.path.join(datafiles.dirname, datafiles.basename)
+    subproject_path = os.path.join(project, 'files', 'sub-project')
+    junction_path = os.path.join(project, 'elements', 'junction.bst')
+    element_path = os.path.join(project, 'elements', 'junction-dep.bst')
+    checkout = os.path.join(cli.directory, 'checkout')
+
+    # Create a repo to hold the subproject and generate a junction element for it
+    ref = generate_junction(tmpdir, subproject_path, junction_path)
+
+    # Create a stack element to depend on a cross junction element
+    #
+    element = {
+        'kind': 'stack',
+        'depends': [
+            {
+                'junction': 'junction.bst',
+                'filename': 'import-etc.bst'
+            }
+        ]
+    }
+    _yaml.dump(element, element_path)
+
+    # Now try to build it, this should automatically result in fetching
+    # the junction itself at load time.
+    result = cli.run(project=project, args=['build'])
+    result.assert_success()
+
+    # Assert that it's cached now
+    assert cli.get_element_state(project, 'junction-dep.bst') == 'cached'
+
+    # Now check it out
+    result = cli.run(project=project, args=[
+        'artifact', 'checkout', 'junction-dep.bst', '--directory', checkout
+    ])
+    result.assert_success()
+
+    # Assert the content of /etc/animal.conf
+    filename = os.path.join(checkout, 'etc', 'animal.conf')
+    assert os.path.exists(filename)
+    with open(filename, 'r') as f:
+        contents = f.read()
+    assert contents == 'animal=Pony\n'
+
+
 @pytest.mark.datafiles(DATA_DIR)
 def test_build_checkout_workspaced_junction(cli, tmpdir, datafiles):
     project = os.path.join(datafiles.dirname, datafiles.basename)
diff --git a/tests/frontend/project_world/files/sub-project/elements/import-etc.bst b/tests/frontend/project_world/files/sub-project/elements/import-etc.bst
new file mode 100644
index 000000000..f0171990e
--- /dev/null
+++ b/tests/frontend/project_world/files/sub-project/elements/import-etc.bst
@@ -0,0 +1,4 @@
+kind: import
+sources:
+- kind: local
+  path: files/etc-files
diff --git a/tests/frontend/project_world/files/sub-project/files/etc-files/etc/animal.conf b/tests/frontend/project_world/files/sub-project/files/etc-files/etc/animal.conf
new file mode 100644
index 000000000..db8c36cba
--- /dev/null
+++ b/tests/frontend/project_world/files/sub-project/files/etc-files/etc/animal.conf
@@ -0,0 +1 @@
+animal=Pony
diff --git a/tests/frontend/project_world/files/sub-project/project.conf b/tests/frontend/project_world/files/sub-project/project.conf
new file mode 100644
index 000000000..bbb8414a3
--- /dev/null
+++ b/tests/frontend/project_world/files/sub-project/project.conf
@@ -0,0 +1,4 @@
+# Project config for frontend build test
+name: subtest
+
+element-path: elements