oeqa: add "maturin develop" SDK test case

'maturin develop' first checks that a virtual environment
has been created, which is a good test for our python3 SDK
environment ;)

Source for guessing-game lifted from https://www.maturin.rs/tutorial

The test case is expected to fetch any necessary crates, build a
development version of the crate and package it as a wheel

Needs at a minimum the following in e.g. local.conf:
TOOLCHAIN_HOST_TASK:append = " nativesdk-python3-maturin"
SDK_INCLUDE_TOOLCHAIN = '1'
SDK_TOOLCHAIN_LANGS += 'rust'

The output of 'maturin develop' should be something like:
...
🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.8
🐍 Not using a specific python interpreter
📡 Using build options features from pyproject.toml
   ...
   Compiling guessing-game v0.1.0 (/path/to/guessing-game)
    Finished dev [unoptimized + debuginfo] target(s) in 7.14s
📦 Built wheel for abi3 Python ≥ 3.8 to /path/to/tmpdir/guessing_game-0.1.0-cp38-abi3-linux_x86_64.whl
🛠 Installed guessing-game-0.1.0

Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 47 insertions, 1 deletions

diff --git a/meta/lib/oeqa/sdk/cases/maturin.py b/meta/lib/oeqa/sdk/cases/maturin.py
index 14245bc36e..ea10f568b2 100644
--- a/meta/lib/oeqa/sdk/cases/maturin.py
+++ b/meta/lib/oeqa/sdk/cases/maturin.py
@@ -4,9 +4,12 @@
 # SPDX-License-Identifier: MIT
 #
 
+import os
+import shutil
 import unittest
-from oeqa.sdk.case import OESDKTestCase
 
+from oeqa.core.utils.path import remove_safe
+from oeqa.sdk.case import OESDKTestCase
 from oeqa.utils.subprocesstweak import errors_have_output
 
 errors_have_output()
@@ -31,3 +34,46 @@ class MaturinTest(OESDKTestCase):
             output,
             r" - CPython %s (.+)/usr/bin/python%s$" % (python_version, python_version),
         )
+
+
+class MaturinDevelopTest(OESDKTestCase):
+    @classmethod
+    def setUpClass(self):
+        targetdir = os.path.join(self.tc.sdk_dir, "guessing-game")
+        try:
+            shutil.rmtree(targetdir)
+        except FileNotFoundError:
+            pass
+        shutil.copytree(
+            os.path.join(self.tc.files_dir, "maturin/guessing-game"), targetdir
+        )
+
+    def setUp(self):
+        machine = self.td.get("MACHINE")
+        if not (
+            self.tc.hasHostPackage("nativesdk-python3-maturin")
+            or self.tc.hasHostPackage("python3-maturin-native")
+        ):
+            raise unittest.SkipTest("No python3-maturin package in the SDK")
+        if not (
+            self.tc.hasHostPackage("packagegroup-rust-cross-canadian-%s" % machine)
+        ):
+            raise unittest.SkipTest(
+                "Testing 'maturin develop' requires Rust cross-canadian in the SDK"
+            )
+
+    def test_maturin_develop(self):
+        """
+        This test case requires:
+          (1) that a .venv can been created.
+          (2) a functional 'rustc' and 'cargo'
+        """
+        self._run("cd %s/guessing-game; python3 -m venv .venv" % self.tc.sdk_dir)
+        cmd = "cd %s/guessing-game; maturin develop" % self.tc.sdk_dir
+        output = self._run(cmd)
+        self.assertRegex(output, r"🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.8")
+        self.assertRegex(output, r"🐍 Not using a specific python interpreter")
+        self.assertRegex(output, r"📡 Using build options features from pyproject.toml")
+        self.assertRegex(output, r"Compiling guessing-game v0.1.0")
+        self.assertRegex(output, r"📦 Built wheel for abi3 Python ≥ 3.8")
+        self.assertRegex(output, r"🛠 Installed guessing-game-0.1.0")