// Demo returns one problem for each active track.
func Demo(ctx *cli.Context) {
c, err := config.New(ctx.GlobalString("config"))
if err != nil {
log.Fatal(err)
}
client := api.NewClient(c)
problems, err := client.Demo()
if err != nil {
log.Fatal(err)
}
if dirOpt := ctx.String("dir"); dirOpt != "" {
c.Dir = paths.Exercises(dirOpt)
}
fmt.Printf("Your exercises will be saved at: %s\n", c.Dir)
hw := user.NewHomework(problems, c)
if err := hw.Save(); err != nil {
log.Fatal(err)
}
hw.Report(user.HWAll)
fmt.Println("Next step: choose a language, read the README, and make the test suite pass.")
}
func (c *Config) setDefaults() error {
if c.API == "" {
c.API = hostAPI
}
if c.XAPI == "" {
c.XAPI = hostXAPI
}
c.Dir = paths.Exercises(c.Dir)
return nil
}
// Update sets new values where given.
func (c *Config) Update(key, host, dir, xapi string) error {
key = strings.TrimSpace(key)
if key != "" {
c.APIKey = key
}
host = strings.TrimSpace(host)
if host != "" {
c.API = host
}
if dir != "" {
c.Dir = paths.Exercises(dir)
}
xapi = strings.TrimSpace(xapi)
if xapi != "" {
c.XAPI = xapi
}
return nil
}
func TestLoad(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "")
if err != nil {
t.Fatal(err)
}
configPath := filepath.Join(tmpDir, "config.json")
if err := os.Link(fixturePath(t, "config.json"), configPath); err != nil {
t.Fatal(err)
}
dirtyPath := filepath.Join(tmpDir, "dirty.json")
if err := os.Link(fixturePath(t, "dirty.json"), dirtyPath); err != nil {
t.Fatal(err)
}
paths.Home = tmpDir
testCases := []struct {
desc string
in string // the name of the file passed as a command line argument
out string // the name of the file that the config will be written to
dir, key, api, xapi string // the actual config values
}{
{
desc: "defaults",
in: "",
out: paths.Config(""),
dir: paths.Exercises(""),
key: "",
api: hostAPI,
xapi: hostXAPI,
},
{
desc: "file exists",
in: configPath,
out: configPath,
dir: "/a/b/c",
key: "abc123",
api: "http://api.example.com",
xapi: "http://x.example.com",
},
{
desc: "unexpanded path",
in: "~/config.json",
out: configPath,
dir: "/a/b/c",
key: "abc123",
api: "http://api.example.com",
xapi: "http://x.example.com",
},
{
desc: "sanitizes whitespace",
in: "~/dirty.json",
out: filepath.Join(tmpDir, "dirty.json"),
dir: "/a/b/c",
key: "abc123",
api: "http://api.example.com",
xapi: "http://x.example.com",
},
}
for _, tc := range testCases {
c, err := New(tc.in)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, tc.out, c.File, tc.desc)
assert.Equal(t, tc.dir, c.Dir, tc.desc)
assert.Equal(t, tc.key, c.APIKey, tc.desc)
assert.Equal(t, tc.api, c.API, tc.desc)
assert.Equal(t, tc.xapi, c.XAPI, tc.desc)
}
}