add a scope class to manage the context of interaction with Python and simplify the variable exchanging

yagweb · yagweb · commit f413784aad78 · 2017-02-19T12:16:07.000+08:00
diff --git a/src/embed_tests/Python.EmbeddingTest.csproj b/src/embed_tests/Python.EmbeddingTest.csproj
@@ -84,6 +84,7 @@
     <Compile Include="pyobject.cs" />
     <Compile Include="pythonexception.cs" />
     <Compile Include="pytuple.cs" />
+    <Compile Include="pyscope.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\runtime\Python.Runtime.csproj">
diff --git a/src/embed_tests/pyscope.cs b/src/embed_tests/pyscope.cs
@@ -0,0 +1,93 @@
+using NUnit.Framework;
+using Python.Runtime;
+
+namespace Python.EmbeddingTest
+{
+    [TestFixture]
+    public class PyScopeTest
+    {
+        PyScope ps;
+        
+        public PyScopeTest()
+        {
+            ps = Py.Session("test");
+        }
+
+        [SetUp]
+        public void SetUp()
+        {
+            ps = Py.Session("test");
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            ps.Dispose();
+        }
+
+        /// <summary>
+        /// Evaluation a Python expression and obtain the value.
+        /// </summary>
+        [Test]
+        public void TestEval()
+        {
+            ps.SetLocal("a", 1);
+            PyInt result = PyInt.AsInt(ps.Eval("a+2"));
+            Assert.AreEqual(result.ToInt32(), 3);
+        }
+
+        [Test]
+        public void TestExec()
+        {
+            ps.SetGlobal("bb", 100); //declare a global variable
+            ps.SetLocal("cc", 10); //declare a local variable
+            ps.Exec("aa=bb+cc+3");
+            int result = ps.Get<System.Int32>("aa");
+            Assert.AreEqual(result, 113);
+        }
+
+        [Test]
+        public void TestSubScope()
+        {
+            ps.SetGlobal("bb", 100); //declare a global variable
+            ps.SetLocal("cc", 10); //declare a local variable
+
+            PyScope scope = ps.SubScope();
+            scope.Exec("aa=bb+cc+3");
+            int result = scope.Get<System.Int32>("aa");
+            Assert.AreEqual(result, 113); //
+            scope.Dispose();
+
+            Assert.IsFalse(ps.Exists("aa"));
+        }
+
+        [Test]
+        public void TestImport()
+        {
+            ps.Import("sys");
+            Assert.IsTrue(ps.Exists("sys"));
+        }
+
+        [Test]
+        public void TestImportAs()
+        {
+            ps.ImportAs("sys", "sys1");
+            Assert.IsTrue(ps.Exists("sys1"));
+        }
+
+        [Test]
+        public void TestSuspend()
+        {
+            ps.SetGlobal("bb", 100);
+            ps.SetLocal("cc", 10);
+            ps.Suspend();
+            using (Py.GIL())
+            {
+                PythonEngine.RunSimpleString("import sys;");
+            }
+            ps.Exec("aa=bb+cc+3");
+            int result = ps.Get<System.Int32>("aa");
+            Assert.AreEqual(result, 113);
+        }
+    }
+}
diff --git a/src/runtime/pythonengine.cs b/src/runtime/pythonengine.cs
