Split the unit level from the integration level in cmd, builder, link, catalogue, inventory; cheap fixtures for the archive-entry bound, the registry waits and the catalogue copy (issue 895)

internal/builder/registry_wait_test.go

@@ -76,13 +76,13 @@ func TestABuildWaitsForARegistryHeldStillAndGoesOn(t *testing.T) {
 	waitingFor(t, 5*time.Second)
 	said := saying(t)
 	f := &fakeRegistry{}
-	r := Registry{Address: heldStill(t, f, 400*time.Millisecond)}
+	r := Registry{Address: heldStill(t, f, 100*time.Millisecond)}
 	body := []byte("a theme")
 	sum := sha256.Sum256(body)
 	digest := "sha256:" + hex.EncodeToString(sum[:])
 
 	if _, err := r.PublishArchive(context.Background(), "shell/config", body, digest); err != nil {
-		t.Fatalf("a registry refusing for 400ms failed the build: %v", err)
+		t.Fatalf("a registry refusing for 100ms failed the build: %v", err)
 	}
 	if string(f.blobs[digest]) != "a theme" {
 		t.Fatalf("the registry holds %q", f.blobs[digest])
@@ -97,7 +97,7 @@ func TestABuildWaitsForARegistryHeldStillAndGoesOn(t *testing.T) {
 }
 
 func TestABuildFailsLoudlyOnARegistryRefusingPastTheBound(t *testing.T) {
-	waitingFor(t, 300*time.Millisecond)
+	waitingFor(t, 100*time.Millisecond)
 	said := saying(t)
 	f := &fakeRegistry{}
 	r := Registry{Address: heldStill(t, f, -1)}
@@ -113,7 +113,7 @@ func TestABuildFailsLoudlyOnARegistryRefusingPastTheBound(t *testing.T) {
 	if !strings.Contains(err.Error(), "refused every connection for") || !strings.Contains(err.Error(), "connection refused") {
 		t.Errorf("the failure does not say it waited and was refused throughout: %v", err)
 	}
-	if waited := time.Since(started); waited < 300*time.Millisecond {
+	if waited := time.Since(started); waited < 100*time.Millisecond {
 		t.Errorf("failed after %s, before the bound", waited)
 	}
 	if log := strings.Join(said(), "\n"); !strings.Contains(log, "waits for the registry") {