Post solution

3 files changed, 37 insertions, 2 deletions

diff --git a/lambda-calcul/javascript/index.js b/lambda-calcul/javascript/index.js
index c01c39e..d8b5e68 100644
--- a/lambda-calcul/javascript/index.js
+++ b/lambda-calcul/javascript/index.js
@@ -15,7 +15,8 @@ const solveNextChallenge = (token) => client
   .nextChallenge(token)
   .then(challenge => console.log(`Next challenge: ${challenge}`) || challenge)
   .then(client.solve)
-  .then(solution => console.log(`… solved into: ${solution}`));
+  .then(solution => console.log(`Posting solution: ${solution}`) || solution)
+  .then(solution => client.postSolution(token, solution));
 
 const waitForEnterToBePressed = () => {
     const readlineInterface = createInterface({
diff --git a/lambda-calcul/javascript/src/client.js b/lambda-calcul/javascript/src/client.js
index 08b967d..e6b4fd3 100644
--- a/lambda-calcul/javascript/src/client.js
+++ b/lambda-calcul/javascript/src/client.js
@@ -16,11 +16,18 @@ const newClient = ({
   })
     .then(({ data: { expr } }) => expr);
 
+  const postSolution = (token, solution) => axios({
+    method: 'POST',
+    url: `${challengerURL}/api/challenge?token=${token}`,
+    headers: { 'Content-Type': 'application/json;charset=utf-8' },
+    data: solution,
+  });
+
   const solve = (challenge) => {
     const parsedExpression = parser.parse(challenge);
     const evaluatedExpression = interpreter.evaluate(parsedExpression);
     return printer.print(evaluatedExpression);
-  }
+  };
 
   const start = () => axios({
     method: 'POST',
@@ -37,6 +44,7 @@ const newClient = ({
 
   return {
     nextChallenge,
+    postSolution,
     solve,
     start,
     unregister,
diff --git a/lambda-calcul/javascript/test/client.test.js b/lambda-calcul/javascript/test/client.test.js
index 8a5ebff..a001c6f 100644
--- a/lambda-calcul/javascript/test/client.test.js
+++ b/lambda-calcul/javascript/test/client.test.js
@@ -80,6 +80,32 @@ describe('λ-calculator', () => {
     expect(client.solve('Some challenge')).toBe('Expression to print');
   });
 
+  it('posts solution', () => {
+    let challengerCalled = false;
+
+    challenger.on('request', (request, response) => {
+      challengerCalled = true;
+      expect(request.headers).toHaveProperty('content-type', 'application/json;charset=utf-8');
+      expect(request.method).toBe('POST');
+      expect(request.url).toBe('/api/challenge?token=SomeToken');
+
+      let payload = '';
+      request.on('data', (d) => (payload += d));
+      request.on('end', () => {
+        expect(payload).toEqual('"answer"');
+      });
+
+      response.end();
+    });
+
+    const client = LC.newClient({
+      playerName: 'John Smith',
+      challengerURL: `http://localhost:${port}`,
+    });
+    return client.postSolution('SomeToken', "answer")
+      .then(() => expect(challengerCalled).toBe(true));
+  });
+
   it('unregisters user', () => {
     let challengerCalled = false;