arm/oeqa: Add selftests for FVP library

Create basic tests for conffile and runner in meta-arm/lib/fvp

Issue-Id: SCM-4957
Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Change-Id: I1684b0c99fb4fd5299df19f00abb30e8faab3495
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm/lib/oeqa/selftest/cases/runfvp.py

@@ -1,6 +1,9 @@
+import asyncio
 import os
 import pathlib
 import subprocess
+import tempfile
+import unittest.mock
 
 from oeqa.selftest.case import OESelftestTestCase
 
@@ -49,3 +52,58 @@ class RunFVPTests(OESelftestTestCase):
     def test_fvp_options(self):
         # test-parameter sets one argument, add another manually
         self.run_fvp(testdir / "test-parameter.json", "--", "--parameter", "board.dog=woof")
+
+class ConfFileTests(OESelftestTestCase):
+    def test_no_exe(self):
+        from fvp import conffile
+        with tempfile.NamedTemporaryFile('w') as tf:
+            tf.write('{}')
+            tf.flush()
+
+            with self.assertRaises(ValueError):
+                conffile.load(tf.name)
+
+    def test_minimal(self):
+        from fvp import conffile
+        with tempfile.NamedTemporaryFile('w') as tf:
+            tf.write('{"exe": "FVP_Binary"}')
+            tf.flush()
+
+            conf = conffile.load(tf.name)
+            self.assertTrue('fvp-bindir' in conf)
+            self.assertTrue('fvp-bindir' in conf)
+            self.assertTrue("exe" in conf)
+            self.assertTrue("parameters" in conf)
+            self.assertTrue("data" in conf)
+            self.assertTrue("applications" in conf)
+            self.assertTrue("terminals" in conf)
+            self.assertTrue("args" in conf)
+            self.assertTrue("console" in conf)
+
+
+class RunnerTests(OESelftestTestCase):
+    def create_mock(self):
+        return unittest.mock.patch("asyncio.create_subprocess_exec")
+
+    def test_start(self):
+        from fvp import runner
+        with self.create_mock() as m:
+            fvp = runner.FVPRunner(self.logger)
+            asyncio.run(fvp.start({
+                "fvp-bindir": "/usr/bin",
+                "exe": "FVP_Binary",
+                "parameters": {'foo': 'bar'},
+                "data": ['data1'],
+                "applications": {'a1': 'file'},
+                "terminals": {},
+                "args": ['--extra-arg'],
+            }))
+
+            m.assert_called_once_with('/usr/bin/FVP_Binary',
+                '--parameter', 'foo=bar',
+                '--data', 'data1',
+                '--application', 'a1=file',
+                '--extra-arg',
+                stdin=unittest.mock.ANY,
+                stdout=unittest.mock.ANY,
+                stderr=unittest.mock.ANY)