[PATCH 2/7] tests/cooker: add a bitbake -b bbappend test

From: Adrian Freihofer <[email protected]>

The buildfile ("bitbake -b") mode had no test coverage at all. Add
BuildFileTest.test_buildfile_applies_bbappends(), which writes a recipe
plus a matching .bbappend to a temporary directory, points EXTRA_BBFILES
at both and runs a task recording a variable the bbappend overrides.

It uses the parse-tests BBPATH because that bitbake.conf already globs
*.bbappend. Without the preceding fix the recipe's own default is
recorded, i.e. -b dropped the bbappend silently.

If the previous commit is reverted, this test faila with:

    AssertionError: 'no-bbappend' != 'bbappend-applied'
    - no-bbappend
    + bbappend-applied

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <[email protected]>
---
 lib/bb/tests/cooker.py | 52 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/lib/bb/tests/cooker.py b/lib/bb/tests/cooker.py
index 9e524ae34..76ec65540 100644
--- a/lib/bb/tests/cooker.py
+++ b/lib/bb/tests/cooker.py
@@ -8,6 +8,8 @@
 
 import unittest
 import os
+import subprocess
+import tempfile
 import bb, bb.cooker
 import re
 import logging
@@ -69,3 +71,53 @@ class CookerTest(unittest.TestCase):
         expected = []
 
         self.assertEqual(log_handler.logdata, expected)
+
+
+class BuildFileTest(unittest.TestCase):
+    """Tests for the buildfile ("bitbake -b") mode."""
+
+    # parse-tests BBPATH: minimal bitbake.conf whose BBFILES honours
+    # EXTRA_BBFILES and already includes *.bbappend
+    _parsetests = os.path.realpath(os.path.join(os.path.dirname(__file__), "parse-tests"))
+
+    recipe = """\
+MARKER ??= "no-bbappend"
+python do_marker() {
+    with open(d.expand("${TOPDIR}/marker.log"), "w") as f:
+        f.write(d.getVar("MARKER"))
+}
+addtask marker
+"""
+
+    bbappend = 'MARKER = "bbappend-applied"\n'
+
+    def test_buildfile_applies_bbappends(self):
+        """bitbake -b must build the recipe with its bbappends applied.
+
+        buildFileInternal() looks the appends up in self.collections[mc], which
+        on the -b path is only ever populated by matchFiles().
+        """
+        with tempfile.TemporaryDirectory(prefix="buildfilerecipes") as recipes, \
+             tempfile.TemporaryDirectory(prefix="buildfiletest") as builddir:
+            recipe = os.path.join(recipes, "appendtest.bb")
+            with open(recipe, "w") as f:
+                f.write(self.recipe)
+            with open(os.path.join(recipes, "appendtest.bbappend"), "w") as f:
+                f.write(self.bbappend)
+
+            env = os.environ.copy()
+            env["BBPATH"] = self._parsetests
+            env["BB_ENV_PASSTHROUGH_ADDITIONS"] = "TOPDIR EXTRA_BBFILES"
+            env["TOPDIR"] = builddir
+            env["EXTRA_BBFILES"] = "%s/*.bb %s/*.bbappend" % (recipes, recipes)
+
+            cmd = ["bitbake", "-b", recipe, "-c", "marker"]
+            try:
+                subprocess.check_output(cmd, env=env, stderr=subprocess.STDOUT,
+                                        universal_newlines=True, cwd=builddir)
+            except subprocess.CalledProcessError as e:
+                self.fail("Command %s failed with %s" % (cmd, e.output))
+
+            with open(os.path.join(builddir, "marker.log")) as f:
+                self.assertEqual(f.read(), "bbappend-applied",
+                                 "bitbake -b did not apply the recipe's bbappend")
-- 
2.55.0