Unit tests for evaluating expressions in the experimental debugger (microsoft#1579)

Fixes microsoft#1109

Author: DonJayamanne

news/3 Code Health/1109.md

@@ -0,0 +1 @@
+Add unit tests for evaluating expressions in the experimental debugger.

src/test/debugger/misc.test.ts

@@ -19,6 +19,7 @@ import { PYTHON_PATH, sleep } from '../common';
 import { IS_MULTI_ROOT_TEST, TEST_DEBUGGER } from '../initialize';
 import { DEBUGGER_TIMEOUT } from './common/constants';
 import { DebugClientEx } from './debugClient';
+import { continueDebugging } from './utils';
 
 const isProcessRunning = require('is-running') as (number) => boolean;
 
@@ -539,5 +540,33 @@ let testCounter = 0;
  expect(stackframes.body.stackFrames[2].line).to.be.equal(10);
  expect(fileSystem.arePathsSame(stackframes.body.stackFrames[2].source!.path!, pythonFile)).to.be.equal(true, 'paths do not match');
  });
+ test('Test Evaluation of Expressions', async function () {
+ if (debuggerType !== 'pythonExperimental') {
+ return this.skip();
+ }
+
+ const breakpointLocation = { path: path.join(debugFilesPath, 'sample2WithoutSleep.py'), column: 1, line: 5 };
+ const breakpointArgs = {
+ lines: [breakpointLocation.line],
+ breakpoints: [{ line: breakpointLocation.line, column: breakpointLocation.column }],
+ source: { path: breakpointLocation.path }
+ };
+ await Promise.all([
+ debugClient.launch(buildLauncArgs('sample2WithoutSleep.py', false)),
+ debugClient.waitForEvent('initialized')
+ .then(() => debugClient.setBreakpointsRequest(breakpointArgs))
+ .then(() => debugClient.configurationDoneRequest())
+ .then(() => debugClient.threadsRequest()),
+ debugClient.waitForEvent('thread'),
+ debugClient.assertStoppedLocation('breakpoint', breakpointLocation)
+ ]);
+
+ //Do not remove this, this is required to ensure PTVSD is ready to accept other requests.
+ await debugClient.threadsRequest();
+ const evaluateResponse = await debugClient.evaluateRequest({ context: 'repl', expression: 'a+b+2', frameId: 1 });
+ expect(evaluateResponse.body.type).to.equal('int');
+ expect(evaluateResponse.body.result).to.equal('5');
+ await continueDebugging(debugClient);
+ });
  });
 });

src/test/pythonFiles/debugging/sample2WithoutSleep.py

@@ -0,0 +1,13 @@
+import time
+# time.sleep(3)
+a = 1
+b = 2
+print(a + b)
+
+def do_something(name):
+ print("inside")
+ print(name)
+
+do_something("Do that")
+
+print("hello world")