source.py: Allow access to element's variable

This automatically expands the variables from the element into
the sources config

5 files changed, 54 insertions, 0 deletions

diff --git a/tests/sources/variables.py b/tests/sources/variables.py
new file mode 100644
index 000000000..3e9a08fd8
--- /dev/null
+++ b/tests/sources/variables.py
@@ -0,0 +1,35 @@
+# Pylint doesn't play well with fixtures and dependency injection from pytest
+# pylint: disable=redefined-outer-name
+
+import os
+
+import pytest
+
+from buildstream.exceptions import ErrorDomain, LoadErrorReason
+from buildstream.testing.runcli import cli  # pylint: disable=unused-import
+
+
+DATA_DIR = os.path.join(os.path.dirname(os.path.realpath(__file__)), "variables")
+
+
+@pytest.mark.datafiles(DATA_DIR)
+def test_variables_are_resolved(cli, tmpdir, datafiles):
+    project = str(datafiles)
+    checkoutdir = os.path.join(str(tmpdir), "checkout")
+
+    # Build, checkout
+    result = cli.run(project=project, args=["build", "target.bst"])
+    result.assert_success()
+    result = cli.run(project=project, args=["artifact", "checkout", "target.bst", "--directory", checkoutdir])
+    result.assert_success()
+
+    # Check that the checkout contains the expected file
+    assert os.path.exists(os.path.join(checkoutdir, "file.txt"))
+
+
+@pytest.mark.datafiles(DATA_DIR)
+def test_handles_unresolved_variables(cli, tmpdir, datafiles):
+    project = str(datafiles)
+
+    result = cli.run(project=project, args=["build", "unresolveable-target.bst"])
+    result.assert_main_error(ErrorDomain.LOAD, LoadErrorReason.UNRESOLVED_VARIABLE)
diff --git a/tests/sources/variables/folder/file.txt b/tests/sources/variables/folder/file.txt
new file mode 100644
index 000000000..a496efee8
--- /dev/null
+++ b/tests/sources/variables/folder/file.txt
@@ -0,0 +1 @@
+This is a text file
diff --git a/tests/sources/variables/project.conf b/tests/sources/variables/project.conf
new file mode 100644
index 000000000..dc34380a4
--- /dev/null
+++ b/tests/sources/variables/project.conf
@@ -0,0 +1,3 @@
+# Basic project
+name: foo
+min-version: 2.0
diff --git a/tests/sources/variables/target.bst b/tests/sources/variables/target.bst
new file mode 100644
index 000000000..0b492fdf3
--- /dev/null
+++ b/tests/sources/variables/target.bst
@@ -0,0 +1,9 @@
+kind: import
+description: This is the pony
+
+sources:
+- kind: local
+  path: "%{my-folder}/file.txt"
+
+variables:
+  my-folder: folder
diff --git a/tests/sources/variables/unresolveable-target.bst b/tests/sources/variables/unresolveable-target.bst
new file mode 100644
index 000000000..b6ce77363
--- /dev/null
+++ b/tests/sources/variables/unresolveable-target.bst
@@ -0,0 +1,6 @@
+kind: import
+description: This is the pony
+
+sources:
+- kind: local
+  path: "%{my-folder}/file.txt"