func LoadFormulaFromFile(path string) def.Formula {
filename, _ := filepath.Abs(path)
content, err := ioutil.ReadFile(filename)
if err != nil {
panic(Error.Wrap(fmt.Errorf("Could not read formula file %q: %s", filename, err)))
}
content = tab2space(content)
var raw interface{}
if err := yaml.Unmarshal(content, &raw); err != nil {
panic(Error.New("Could not parse formula file %q: %s", filename, err))
}
raw = stringifyMapKeys(raw)
formula := def.Formula{}
if err := formula.Unmarshal(raw); err != nil {
panic(Error.New("Could not parse formula file %q: %s", filename, err))
}
return formula
}
/*
Check the basics of exec:
- Does it work at all?
- Can we see error codes?
- Can we stream stdout?
- If there's no rootfs, does it panic?
- If the command's not found, does it panic?
Anything that requires *more than the one rootfs input* or anything
about outputs belongs in another part of the spec tests.
If any of these fail, most other parts of the specs will also fail.
*/
func CheckBasicExecution(execEng executor.Executor) {
Convey("SPEC: Attempting launch with a rootfs that doesn't exist should error", func() {
formula := def.Formula{
Inputs: []def.Input{
{
Type: "tar",
Location: "/",
// Funny thing is, the URI isn't even necessarily where the buck stops;
// Remote URIs need not be checked if caches are in play, etc.
// So the hash needs to be set (and needs to be invalid).
URI: "file:///nonexistance/in/its/most/essential/unform.tar.gz",
Hash: "defnot",
},
},
}
Convey("We should get an error from the warehouse", func() {
result := execEng.Start(formula, def.JobID(guid.New()), nil, ioutil.Discard).Wait()
So(result.Error, testutil.ShouldBeErrorClass, integrity.WarehouseError)
})
Convey("The job exit code should clearly indicate failure", FailureContinues, func() {
formula.Accents = def.Accents{
Entrypoint: []string{"echo", "echococo"},
}
job := execEng.Start(formula, def.JobID(guid.New()), nil, ioutil.Discard)
So(job, ShouldNotBeNil)
So(job.Wait().Error, ShouldNotBeNil)
// Even though one should clearly also check the error status,
// zero here could be very confusing, so jobs that error before start should be -1.
So(job.Wait().ExitCode, ShouldEqual, -1)
})
})
Convey("SPEC: Launching a command with a working rootfs should work", func() {
formula := getBaseFormula()
Convey("The executor should be able to invoke echo", FailureContinues, func() {
formula.Accents = def.Accents{
Entrypoint: []string{"echo", "echococo"},
}
job := execEng.Start(formula, def.JobID(guid.New()), nil, ioutil.Discard)
So(job, ShouldNotBeNil)
// note that we can read output concurrently.
// no need to wait for job done.
msg, err := ioutil.ReadAll(job.OutputReader())
So(err, ShouldBeNil)
So(string(msg), ShouldEqual, "echococo\n")
So(job.Wait().Error, ShouldBeNil)
So(job.Wait().ExitCode, ShouldEqual, 0)
})
Convey("The executor should be able to check exit codes", func() {
formula.Accents = def.Accents{
Entrypoint: []string{"sh", "-c", "exit 14"},
}
job := execEng.Start(formula, def.JobID(guid.New()), nil, ioutil.Discard)
So(job, ShouldNotBeNil)
So(job.Wait().Error, ShouldBeNil)
So(job.Wait().ExitCode, ShouldEqual, 14)
})
Convey("The executor should report command not found clearly", FailureContinues, func() {
formula.Accents = def.Accents{
Entrypoint: []string{"not a command"},
}
job := execEng.Start(formula, def.JobID(guid.New()), nil, ioutil.Discard)
So(job.Wait().Error, testutil.ShouldBeErrorClass, executor.NoSuchCommandError)
So(job.Wait().ExitCode, ShouldEqual, -1)
msg, err := ioutil.ReadAll(job.OutputReader())
So(err, ShouldBeNil)
So(string(msg), ShouldEqual, "")
})
})
}