{"action":"created","comment":{"url":"https://api.github.com/repos/palantir/plottable/pulls/comments/27847686","id":27847686,"diff_hunk":"@@ -68,14 +68,41 @@ describe(\"Tables\", () => {\n     assert.isNull(rows[1][0], \"component at (1, 0) is null\");\n   });\n \n-  it(\"can't add a component where one already exists\", () => {\n+  it(\"Add a component where one already exists creates a new group\", () => {\n     var c1 = new Plottable.Component.AbstractComponent();\n     var c2 = new Plottable.Component.AbstractComponent();\n     var c3 = new Plottable.Component.AbstractComponent();\n     var t = new Plottable.Component.Table();\n+\n     t.addComponent(0, 2, c1);\n     t.addComponent(0, 0, c2);\n-    assert.throws(() => t.addComponent(0, 2, c3), Error, \"component already exists\");\n+    t.addComponent(0, 2, c3);\n+\n+    assert.isTrue(Plottable.Component.Group.prototype.isPrototypeOf((<any> t)._rows[0][2]));","path":"test/core/tableTests.ts","position":16,"original_position":16,"commit_id":"d3322aca623f54611cbcdf1ed7ed9fe31f58277f","original_commit_id":"d3322aca623f54611cbcdf1ed7ed9fe31f58277f","user":{"login":"jtlan","id":1440449,"avatar_url":"https://avatars.githubusercontent.com/u/1440449?v=3","gravatar_id":"","url":"https://api.github.com/users/jtlan","html_url":"https://github.com/jtlan","followers_url":"https://api.github.com/users/jtlan/followers","following_url":"https://api.github.com/users/jtlan/following{/other_user}","gists_url":"https://api.github.com/users/jtlan/gists{/gist_id}","starred_url":"https://api.github.com/users/jtlan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jtlan/subscriptions","organizations_url":"https://api.github.com/users/jtlan/orgs","repos_url":"https://api.github.com/users/jtlan/repos","events_url":"https://api.github.com/users/jtlan/events{/privacy}","received_events_url":"https://api.github.com/users/jtlan/received_events","type":"User","site_admin":false},"body":"Probably add a message to this `assert` statement, something like \"A group was created\". Consider that if this test fails all that the developer will see is \"Expected false to be true\".","created_at":"2015-04-07T02:27:49Z","updated_at":"2015-04-07T02:27:49Z","html_url":"https://github.com/palantir/plottable/pull/1803#discussion_r27847686","pull_request_url":"https://api.github.com/repos/palantir/plottable/pulls/1803","_links":{"self":{"href":"https://api.github.com/repos/palantir/plottable/pulls/comments/27847686"},"html":{"href":"https://github.com/palantir/plottable/pull/1803#discussion_r27847686"},"pull_request":{"href":"https://api.github.com/repos/palantir/plottable/pulls/1803"}}},"pull_request":{"url":"https://api.github.com/repos/palantir/plottable/pulls/1803","id":32728426,"html_url":"https://github.com/palantir/plottable/pull/1803","diff_url":"https://github.com/palantir/plottable/pull/1803.diff","patch_url":"https://github.com/palantir/plottable/pull/1803.patch","issue_url":"https://api.github.com/repos/palantir/plottable/issues/1803","number":1803,"state":"open","locked":false,"title":"1714 er","user":{"login":"aicioara","id":3248682,"avatar_url":"https://avatars.githubusercontent.com/u/3248682?v=3","gravatar_id":"","url":"https://api.github.com/users/aicioara","html_url":"https://github.com/aicioara","followers_url":"https://api.github.com/users/aicioara/followers","following_url":"https://api.github.com/users/aicioara/following{/other_user}","gists_url":"https://api.github.com/users/aicioara/gists{/gist_id}","starred_url":"https://api.github.com/users/aicioara/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aicioara/subscriptions","organizations_url":"https://api.github.com/users/aicioara/orgs","repos_url":"https://api.github.com/users/aicioara/repos","events_url":"https://api.github.com/users/aicioara/events{/privacy}","received_events_url":"https://api.github.com/users/aicioara/received_events","type":"User","site_admin":false},"body":"Closes #1714 \r\nNothing fancy going on. Added unit testing for the 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