tests/testthat/test-network-Github.R

In jsonlite: A Simple and Robust JSON Parser and Generator for R

test_that("Non Nested", {
  mydata <- fromJSON("https://api.github.com/users/hadley/orgs");
  expect_s3_class(mydata, "data.frame");
});

test_that("Nested 1 Level", {
  mydata <- fromJSON("https://api.github.com/users/hadley/repos");
  expect_s3_class(mydata, "data.frame");
  expect_s3_class(mydata$owner, "data.frame");
  expect_equal(nrow(mydata), nrow(mydata$owner));
});


test_that("Nested 1 Level", {
  mydata <- fromJSON("https://api.github.com/repos/hadley/ggplot2/issues");
  expect_s3_class(mydata, "data.frame");
  expect_s3_class(mydata$user, "data.frame");
  expect_s3_class(mydata$pull_request, "data.frame");
  expect_equal(nrow(mydata), nrow(mydata$pull_request));
});

test_that("Nested 1 Level within list", {
  mydata <- fromJSON("https://api.github.com/search/repositories?q=tetris+language:assembly&sort=stars&order=desc");
  expect_type(mydata, "list");
  expect_s3_class(mydata$items, "data.frame");
  expect_s3_class(mydata$items$owner, "data.frame");
  expect_equal(nrow(mydata$items), nrow(mydata$items$owner));
});

test_that("Nested 2 Level", {
  mydata <- fromJSON("https://api.github.com/repos/hadley/ggplot2/commits");
  expect_s3_class(mydata, "data.frame");
  expect_s3_class(mydata$commit, "data.frame");
  expect_s3_class(mydata$commit$author, "data.frame");
  expect_type(mydata$commit$author$name, "character");
  expect_equal(nrow(mydata), nrow(mydata$commit));
  expect_equal(nrow(mydata), nrow(mydata$commit$author));
});

test_that("Nested inconsistent (payload), one-to-many", {
  mydata <- fromJSON("https://api.github.com/users/hadley/events");
  expect_s3_class(mydata, "data.frame");
  expect_s3_class(mydata$actor, "data.frame");
  expect_s3_class(mydata$repo, "data.frame");
  expect_type(mydata$type, "character");
  expect_s3_class(mydata$payload, "data.frame");

  #this is dynamic, depends on data
  if(any(mydata$type == "PushEvent")){
    expect_true(all(vapply(mydata$payload$commits, function(x){is.null(x) || is.data.frame(x)}, logical(1))));
  }
});

test_that("Nested inconsistent (payload), one-to-many", {
  mydata <- fromJSON("https://api.github.com/repos/hadley/ggplot2/events");
  if(any("ForkEvent" %in% mydata$type)){
    expect_s3_class(mydata$payload$forkee$owner, "data.frame");
  }

  if(any(mydata$type %in% c("IssuesEvent", "IssueCommentEvent"))){
    expect_s3_class(mydata$payload$issue, "data.frame");
    expect_s3_class(mydata$payload$issue$user, "data.frame");
  }
});