194 lines
9.1 KiB
Bash
Executable File
194 lines
9.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# What rig has settled, written down as assertions.
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#
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# These are documentation that runs. Each check is ONE decision that has already
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# been made, with the reason above it — not coverage, and deliberately not an
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# exhaustive sweep of use cases. rig's own index says a rule without its reason
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# gets overridden the first time it is inconvenient; a rule nobody can restate
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# is worse. So the test says what was decided, and failing it should read as
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# "you are about to undo this" rather than "something broke".
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#
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# Scope, on purpose:
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# - no cluster, no docker, no network. It must be cheap enough to actually run.
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# - it asserts about RIG. `make check` asserts about the MACHINE and never
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# fails; this exits 1, the way `make pins` does.
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# - what actually deploys is not testable here. `tilt ci` stays a manual step.
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#
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# Usage: make selftest (or: bash ctrl/selftest.sh)
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set -uo pipefail # NOT -e: one failing check must not abort the rest
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cd "$(dirname "$0")"
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source ./lib/config.sh
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rc=0
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passed=0
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check() { # name, expected, actual
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if [ "$2" = "$3" ]; then
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printf ' ok %s\n' "$1"
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passed=$((passed + 1))
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else
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printf ' FAIL %s\n expected: %s\n got: %s\n' "$1" "$2" "$3"
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rc=1
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fi
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}
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note() { printf '\n%s\n' "$1"; }
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# Resolve one key the way every rig script does, in a clean shell so the
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# caller's exported value is the only thing in play.
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resolved() {
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bash -c 'source ./lib/config.sh; load_config >/dev/null 2>&1; printf "%s" "${!1}"' _ "$1"
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}
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note "the ports.sh active contract"
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# ports.sh active is read POSITIONALLY by two other files — the Makefile takes
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# $(word 2) and $(word 5), the Tiltfile takes _facts[0]..[6]. Insert a field in
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# the middle and nothing errors: Tilt simply guards on the wrong context or
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# binds the wrong port. The field count and order are the contract, so they are
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# pinned here rather than left to whoever edits ports.sh next.
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FACTS="$(bash ports.sh active)"
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check "active: exactly 7 fields" "7" "$(printf '%s' "$FACTS" | wc -w)"
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read -r F_CLUSTER F_CTX F_HTTP F_HTTPS F_TILT F_REG F_MANIFESTS <<< "$FACTS"
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check "active: field 2 is kind-<cluster>" "kind-$F_CLUSTER" "$F_CTX"
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check "active: fields 3-6 are numeric" "yes" \
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"$([[ "$F_HTTP$F_HTTPS$F_TILT$F_REG" =~ ^[0-9]+$ ]] && echo yes || echo no)"
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check "active: field 7 is a path" "yes" \
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"$([ -n "$F_MANIFESTS" ] && [ "${F_MANIFESTS#-}" = "$F_MANIFESTS" ] && echo yes || echo no)"
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# derive answers a different question and must keep its own shape: it reports
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# what the directory name implies, ignoring ctrl/.env, so nothing should
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# configure itself from it.
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check "derive: still 4 fields, not 7" "4" "$(bash ports.sh derive | wc -w)"
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note "the caller's env beats the files"
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# lib/config.sh states one precedence rule: versions.env < env.d/<profile> <
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# ctrl/.env < the caller's env. It is enforced by CONFIG_OVERRIDABLE, a
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# hand-maintained list — and a key missing from it loses to the file SILENTLY.
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# REGISTRY_PORT and MANIFESTS_DIR were both missing on 2026-09-13 and were found
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# by accident.
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#
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# So this loop is generated FROM the list: add a key to CONFIG_OVERRIDABLE and
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# this test starts asking about it without anyone remembering to come here.
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# Three keys name something that must exist and are validated at load, so they
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# get a real alternative rather than a sentinel.
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test_value() {
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case "$1" in
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PROFILE) echo "client" ;; # env.d/client.env exists
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K8S_VERSION) echo "v1_35" ;; # NODE_IMAGE_v1_35 is pinned
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KIND_CONFIG) echo "kind-config.client.yaml.tpl" ;; # the shape must exist
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*_PORT) echo "19999" ;;
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CLUSTER) echo "selftest-name" ;;
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MANIFESTS_DIR) echo "../elsewhere/overlays/dev" ;;
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ADDONS) echo "metallb" ;;
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*) echo "selftest-sentinel" ;;
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esac
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}
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for key in $CONFIG_OVERRIDABLE; do
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[ -n "$key" ] || continue
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want="$(test_value "$key")"
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if [ -z "$want" ]; then
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check "precedence: $key has a test value" "yes" "no — add one to test_value()"
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continue
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fi
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got="$(export "$key=$want"; resolved "$key")"
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check "precedence: caller's $key wins" "$want" "$got"
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done
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note "one derivation, not three"
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# The Makefile used to compute the cluster name itself and sed TILT_PORT out of
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# ctrl/.env — a second derivation of values lib/config.sh already owns, which
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# could disagree with it after `make ports persist`. It now reads ports.sh
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# active. Nothing structurally prevents the sed coming back, so the agreement is
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# asserted against the real `make -n` output rather than against the source.
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# --no-print-directory and a grep, not `tail -1`: run from `make selftest` this
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# is a RECURSIVE make, and the "Entering/Leaving directory" lines go to STDOUT.
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# tail -1 then reads "make[1]: Leaving directory ..." and both checks below fail
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# — but only when invoked through make, never when the script is run directly.
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# A test that passes one way and fails the other is worse than no test.
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MK="$(cd .. && make --no-print-directory -n tilt 2>/dev/null | grep -m1 'tilt ')"
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check "Makefile: --context comes from active" "$F_CTX" \
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"$(printf '%s' "$MK" | sed -n 's/.*--context \([^ ]*\).*/\1/p')"
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check "Makefile: --port comes from active" "$F_TILT" \
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"$(printf '%s' "$MK" | sed -n 's/.*--port \([^ ]*\).*/\1/p')"
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note "identity follows the folder, safely"
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# The cluster name is NOT the bare directory name: kind needs a DNS label, so
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# default_cluster_name lowercases it and replaces everything outside [a-z0-9-].
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# Re-deriving that anywhere else is how a copy ends up guarding the wrong
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# context — which is exactly why the Tiltfile asks instead of computing.
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TMP="$(mktemp -d)"
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trap 'rm -rf "$TMP"' EXIT
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mkdir -p "$TMP/My_Proj"
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cp -r . "$TMP/My_Proj/ctrl"
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# A pinned CLUSTER in .env would be an override, not a derivation, and this
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# check is about the derivation.
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sed -i '/^CLUSTER=/d' "$TMP/My_Proj/ctrl/.env" 2>/dev/null
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COPY="$(cd "$TMP/My_Proj/ctrl" && bash ports.sh active)"
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check "a dir named My_Proj derives a DNS label" "my-proj" "$(awk '{print $1}' <<< "$COPY")"
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check "and a context to match" "kind-my-proj" "$(awk '{print $2}' <<< "$COPY")"
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check "a renamed copy gets a DIFFERENT block" "different" \
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"$([ "$(awk '{print $3}' <<< "$COPY")" != "$F_HTTP" ] && echo different || echo COLLIDES)"
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note "ports are stable across versions"
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# Not a change-detector. The block is derived, never stored, so if the
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# derivation shifts then every EXISTING environment's ports move underneath it —
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# a running cluster keeps its old ports while rig starts reporting new ones, and
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# `make ports` stops describing reality. Anchored to three known names.
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check "derive_port_base rig" "20310" "$(derive_port_base rig)"
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check "derive_port_base foo" "21690" "$(derive_port_base foo)"
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check "derive_port_base my-proj" "21030" "$(derive_port_base my-proj)"
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note "rig stays standalone"
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# rig sits inside a host project's tree but must be copyable straight out of it:
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# no imports, no paths, no assumption the host is there. This grep is the whole
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# test of that claim, and until now it lived only in prose and in whoever
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# remembered to run it.
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#
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# The pattern is assembled from fragments so this file does not match ITSELF.
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# Writing it literally would fail forever; excluding this file instead would put
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# a blind spot in the one check that guards the boundary.
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HOST_PAT="$(printf '%s' 'sole' 'print' '|\b' 'sp' 'r\b')"
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check "no host-project references" "0" \
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"$(cd .. && grep -rIl -iE "$HOST_PAT" . --exclude-dir=def 2>/dev/null | wc -l)"
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note "the Tiltfile hardcodes nothing"
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# Every other Tiltfile on this machine writes its slug in five or six times by
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# hand, so a copied project deploys into the original's cluster until someone
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# edits all of them. rig's asks ports.sh. A literal kind-<name> here would mean
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# that has been undone.
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check "no literal kind-<name>" "0" "$(grep -cE "['\"]kind-[a-z0-9]" Tiltfile)"
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check "guards on the variable" "1" "$(grep -c 'allow_k8s_contexts(CTX)' Tiltfile)"
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check "asks ports.sh for facts" "1" "$(grep -c "local('bash ports.sh active'" Tiltfile)"
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note "optional — needs tilt and this rig's cluster"
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# Parsing the Tiltfile for real is the only way to know it still evaluates, but
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# Tilt snapshots a kubectl context before parsing, so it cannot run without a
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# cluster. Skipped rather than failed when there is none, the same way docgen
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# skips its graphgen section.
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if ! command -v tilt >/dev/null; then
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printf ' skip tilt is not installed\n'
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elif ! kubectl config get-contexts -o name 2>/dev/null | grep -qx "$F_CTX"; then
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printf " skip no %s context — run 'make cluster up' to include this\n" "$F_CTX"
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else
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out="$(tilt alpha tiltfile-result --context "$F_CTX" 2>&1)"
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check "Tiltfile evaluates" "yes" \
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"$(printf '%s' "$out" | grep -q '"Manifests"' && echo yes || echo "no: $(printf '%s' "$out" | tail -1)")"
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fi
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printf '\n'
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if [ "$rc" -eq 0 ]; then
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printf '%d checks passed — rig still does what it says\n' "$passed"
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else
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printf 'FAILED — a decision above has drifted; read the comment next to it\n' >&2
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fi
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exit "$rc"
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