60 lines
2.1 KiB
Go
60 lines
2.1 KiB
Go
package testbus
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"regexp"
|
|
"strings"
|
|
"testing"
|
|
|
|
"encoding/json"
|
|
|
|
"github.com/novox/mesh-controller/internal/beside"
|
|
)
|
|
|
|
// **The bus the tests run is the bus the mesh runs** (novox/hq ADR 0227 rule 9, to-be 45 §9). The server
|
|
// linked into the tests is held to the release the catalogue's bus image is — the catalogue a merge check
|
|
// clones beside this one, or the copy captured in testdata/beside (internal/beside, novox/hq issue 432) —
|
|
// and, in a merge check that has the facts snapshot, to the release the mesh's bus server says it runs. A
|
|
// bus upgrade moves the catalogue's pin; this then fails in the merge check until the tests' pin moves
|
|
// with it, so the controller is never tested against a bus the mesh no longer runs, or not yet.
|
|
func TestTheBusTheTestsRunIsTheBusTheMeshRuns(t *testing.T) {
|
|
dockerfile := filepath.Join(beside.Catalogue(t), "nats", "Dockerfile")
|
|
raw, err := os.ReadFile(dockerfile)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
pinned := regexp.MustCompile(`upstream: nats ([0-9.]+)-alpine`).FindSubmatch(raw)
|
|
if pinned == nil {
|
|
t.Fatalf("%s says no release its digest is", dockerfile)
|
|
}
|
|
if string(pinned[1]) != Version {
|
|
t.Errorf("the tests run bus %s and the catalogue's bus image is %s: move go.mod's nats-server pin "+
|
|
"(and `go mod vendor`) with the image", Version, pinned[1])
|
|
}
|
|
path := os.Getenv("MESH_FACTS")
|
|
if path == "" {
|
|
t.Logf("no MESH_FACTS: the bus the mesh runs is compared in a merge check, which has it")
|
|
return
|
|
}
|
|
body, err := os.ReadFile(path)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// Read as little of the snapshot as this needs (internal/facts holds the whole shape).
|
|
var f struct {
|
|
Taken string `json:"taken"`
|
|
Versions struct {
|
|
Bus string `json:"bus"`
|
|
} `json:"versions"`
|
|
}
|
|
if err := json.Unmarshal(body, &f); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if f.Versions.Bus != "" && strings.TrimPrefix(f.Versions.Bus, "v") != Version {
|
|
t.Errorf("the tests run bus %s and the mesh's bus runs %s (facts of %s)", Version, f.Versions.Bus, f.Taken)
|
|
}
|
|
}
|
|
|
|
// A test's bus is its own: what one test makes, the next never sees.
|