PY-27910 Add test for builtin breakpoint and add Python 3.7 to env tests

python/setup-test-environment/build.gradle

@@ -104,6 +104,12 @@ envs {
                "python3.6\npython3\ndjango\njinja2\npython34\npython36\npandas",
                true)
 
+  createPython("py37",
+               "3.7.0",
+               [],
+               "python3.7",
+               true)
+
   if (Os.isFamily(Os.FAMILY_UNIX)) {
     createPython("pyqt_env", "3.5.4", ["pyqt5==5.10.1"], "pyqt5", true)
   }

python/testData/debug/test_builtin_break.py

@@ -0,0 +1,8 @@
+
+def foo():
+    a = 1
+    breakpoint()
+    return a
+
+
+foo()

python/testSrc/com/jetbrains/env/python/PythonDebuggerTest.java

@@ -1452,5 +1452,28 @@ public class PythonDebuggerTest extends PyEnvTestCase {
       }
     });
   }
+
+  @Staging
+  @Test
+  public void testBuiltinBreakpoint() {
+    runPythonTest(new PyDebuggerTask("/debug", "test_builtin_break.py") {
+      @Override
+      public void before() {
+      }
+
+      @Override
+      public void testing() throws Exception {
+        waitForPause();
+        eval("a").hasValue("1");
+        resume();
+      }
+
+      @NotNull
+      @Override
+      public Set<String> getTags() {
+        return ImmutableSet.of("python3.7");
+      }
+    });
+  }
 }