[Buildroot] [PATCH 1/1] support/testing: add micropython runtime test

* [Buildroot] [PATCH 1/1] support/testing: add micropython runtime test
@ 2024-01-16 21:05 Julien Olivain
  2024-01-21 13:59 ` Yann E. MORIN
  0 siblings, 1 reply; 2+ messages in thread
From: Julien Olivain @ 2024-01-16 21:05 UTC (permalink / raw)
  To: buildroot; +Cc: Julien Olivain

Signed-off-by: Julien Olivain <ju.o@free.fr>
---
Test is working on tag 2023.11, but fails on tag 2023.11.1 and branch
master at commit e07402a (micropython fail to compile, maybe due to
the bump to version 1.22.0?).

This is unrelated to this test, since the failure can be reproduced
with:

    cat > .config <<EOF
    BR2_aarch64=y
    BR2_TOOLCHAIN_EXTERNAL=y
    BR2_PACKAGE_MICROPYTHON=y
    EOF
    make olddefconfig
    make

Build fail with:

    /buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-none-linux-gnu/13.2.1/../../../../aarch64-none-linux-gnu/bin/ld: build-standard/modffi.o: in function 'char2ffi_type':
    /buildroot/output/build/micropython-1.22.0/ports/unix/modffi.c:119:(.text.char2ffi_type+0x28): undefined reference to 'ffi_type_sint8'
    [...and many others...]

The test is also working when patch [1] is applied, because libffi is
no longer compiled.

[1] https://patchwork.ozlabs.org/project/buildroot/patch/20240116183629.365115-1-fontaine.fabrice@gmail.com/
---
 DEVELOPERS                                    |  2 +
 .../testing/tests/package/test_micropython.py | 66 +++++++++++++++++++
 .../rootfs-overlay/root/mandel.py             | 25 +++++++
 3 files changed, 93 insertions(+)
 create mode 100644 support/testing/tests/package/test_micropython.py
 create mode 100755 support/testing/tests/package/test_micropython/rootfs-overlay/root/mandel.py

diff --git a/DEVELOPERS b/DEVELOPERS
index f5b04937b6..0f961ea486 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1789,6 +1789,8 @@ F:	support/testing/tests/package/test_lzip.py
 F:	support/testing/tests/package/test_lsof.py
 F:	support/testing/tests/package/test_lz4.py
 F:	support/testing/tests/package/test_lzop.py
+F:	support/testing/tests/package/test_micropython.py
+F:	support/testing/tests/package/test_micropython/
 F:	support/testing/tests/package/test_mtools.py
 F:	support/testing/tests/package/test_ncdu.py
 F:	support/testing/tests/package/test_nftables.py
diff --git a/support/testing/tests/package/test_micropython.py b/support/testing/tests/package/test_micropython.py
new file mode 100644
index 0000000000..6d213c7ea5
--- /dev/null
+++ b/support/testing/tests/package/test_micropython.py
@@ -0,0 +1,66 @@
+import os
+
+import infra.basetest
+
+
+class TestMicroPython(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        f"""
+        BR2_PACKAGE_MICROPYTHON=y
+        BR2_ROOTFS_OVERLAY="{infra.filepath("tests/package/test_micropython/rootfs-overlay")}"
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def run_upy_code(self, python_code):
+        cmd = f'micropython -c "{python_code}"'
+        self.assertRunOk(cmd)
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        # The micropython binary can execute.
+        self.assertRunOk("micropython -h")
+
+        # Check implementation is 'micropython'.
+        py_code = "import sys ; assert sys.implementation.name == 'micropython'"
+        self.run_upy_code(py_code)
+
+        # Query interpreter version and implementation.
+        py_code = "import sys ; "
+        py_code += "print('Version:', sys.version) ; "
+        py_code += "print('Implementation:', sys.implementation)"
+        self.run_upy_code(py_code)
+
+        # Check micropython optimization are correctly reported.
+        for opt_level in range(4):
+            py_code = "import micropython ; "
+            py_code += "opt = micropython.opt_level() ; "
+            py_code += "print(opt) ; "
+            py_code += f"assert opt == {opt_level}"
+            cmd = f"micropython -O{opt_level} -c '{py_code}'"
+            self.assertRunOk(cmd)
+
+        # Check micropython can return a non-zero exit code.
+        expected_code = 123
+        py_code = "import sys ; "
+        py_code += f"sys.exit({expected_code})"
+        cmd = f'micropython -c "{py_code}"'
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, expected_code)
+
+        # We check micropython computes correctly.
+        input_value = 1234
+        expected_output = str(sum(range(input_value)))
+        py_code = f"print(sum(range(({input_value}))))"
+        cmd = f'micropython -c "{py_code}"'
+        output, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(output[0], expected_output)
+
+        # Finally, we check check a small script can execute.
+        self.assertRunOk("/root/mandel.py", timeout=10)
diff --git a/support/testing/tests/package/test_micropython/rootfs-overlay/root/mandel.py b/support/testing/tests/package/test_micropython/rootfs-overlay/root/mandel.py
new file mode 100755
index 0000000000..0552f6894c
--- /dev/null
+++ b/support/testing/tests/package/test_micropython/rootfs-overlay/root/mandel.py
@@ -0,0 +1,25 @@
+#! /usr/bin/env micropython
+
+from micropython import mem_info
+
+POINTS = list(",.:-;!/>)|&IH%*Z")
+
+
+def mandel():
+    for y in range(-15, 16):
+        for x in range(1, 85):
+            i = 0
+            r = 0
+            for k in range(112):
+                j = (r*r) - (i*i) - 2 + (x/25)
+                i = 2 * r * i + (y/10)
+                if j*j + i*i >= 11:
+                    break
+                r = j
+            print(POINTS[k & 0xF], end='')
+        print()
+
+
+if __name__ == '__main__':
+    mandel()
+    mem_info()
-- 
2.43.0

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