support/testing: new python-pydantic runtime test

While in theory, the fastapi tests finds problems with the pydantic
package, it's not obvious that this test should be run when the pydantic
package is updated.

Add a new test that just covers pydantic.

Signed-off-by: Marcus Hoffmann <buildroot@bubu1.eu>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>

support/testing/tests/package/test_python_pydantic.py

@@ -0,0 +1,27 @@
+import os
+
+from tests.package.test_python import TestPythonPackageBase
+
+
+class TestPythonPy3Pydantic(TestPythonPackageBase):
+    __test__ = True
+    config = """
+        BR2_arm=y
+        BR2_cortex_a9=y
+        BR2_ARM_ENABLE_NEON=y
+        BR2_ARM_ENABLE_VFP=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_PYDANTIC=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+    sample_scripts = ["tests/package/sample_python_pydantic.py"]
+    timeout = 30
+
+    def login(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(
+            arch="armv7", kernel="builtin", options=["-initrd", cpio_file]
+        )
+        self.emulator.login()