next integration tests (#1712)

* move integration tests pyscriptjs/tests/integration ->pyscript.core/tests/integration

* add information in regards to how to run integration tests to README

* fix fake server build paths

* fix paths to build and run tests. The change of path before integration tests is a glitch maybe due to pytest cache?

* remove test files created by mistake

* update readme with latest changes

---------

Co-authored-by: Fabio Pliger <fpliger@anaconda.com>

pyscript.core/tests/integration/test_interpreter.py

@@ -0,0 +1,98 @@
+import pytest
+
+from .support import PyScriptTest
+
+pytest.skip(
+    reason="FIXME: pyscript API changed doesn't expose pyscript to window anymore",
+    allow_module_level=True,
+)
+
+
+class TestInterpreterAccess(PyScriptTest):
+    """Test accessing Python objects from JS via pyscript.interpreter"""
+
+    def test_interpreter_python_access(self):
+        self.pyscript_run(
+            """
+            <py-script>
+                x = 1
+                def py_func():
+                    return 2
+            </py-script>
+            """
+        )
+
+        self.run_js(
+            """
+            const x = await pyscript.interpreter.globals.get('x');
+            const py_func = await pyscript.interpreter.globals.get('py_func');
+            const py_func_res = await py_func();
+            console.log(`x is ${x}`);
+            console.log(`py_func() returns ${py_func_res}`);
+            """
+        )
+        assert self.console.log.lines[-2:] == [
+            "x is 1",
+            "py_func() returns 2",
+        ]
+
+    def test_interpreter_script_execution(self):
+        """Test running Python code from js via pyscript.interpreter"""
+        self.pyscript_run("")
+
+        self.run_js(
+            """
+            const interface = pyscript.interpreter._remote.interface;
+            await interface.runPython('print("Interpreter Ran This")');
+            """
+        )
+
+        expected_message = "Interpreter Ran This"
+        assert self.console.log.lines[-1] == expected_message
+
+        py_terminal = self.page.wait_for_selector("py-terminal")
+        assert py_terminal.text_content() == expected_message
+
+    def test_backward_compatibility_runtime_script_execution(self):
+        """Test running Python code from js via pyscript.runtime"""
+        self.pyscript_run("")
+
+        self.run_js(
+            """
+            const interface = pyscript.runtime._remote.interpreter;
+            await interface.runPython('print("Interpreter Ran This")');
+            """
+        )
+
+        expected_message = "Interpreter Ran This"
+        assert self.console.log.lines[-1] == expected_message
+
+        py_terminal = self.page.wait_for_selector("py-terminal")
+        assert py_terminal.text_content() == expected_message
+
+    def test_backward_compatibility_runtime_python_access(self):
+        """Test accessing Python objects from JS via pyscript.runtime"""
+        self.pyscript_run(
+            """
+            <py-script>
+                x = 1
+                def py_func():
+                    return 2
+            </py-script>
+            """
+        )
+
+        self.run_js(
+            """
+            const x = await pyscript.interpreter.globals.get('x');
+            const py_func = await pyscript.interpreter.globals.get('py_func');
+            const py_func_res = await py_func();
+            console.log(`x is ${x}`);
+            console.log(`py_func() returns ${py_func_res}`);
+            """
+        )
+
+        assert self.console.log.lines[-2:] == [
+            "x is 1",
+            "py_func() returns 2",
+        ]