test: add missing implementation-plan test targets

tests/bun_test_test/BUILD.bazel

@@ -1,4 +1,5 @@
 load("//bun:defs.bzl", "bun_test")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
 
 bun_test(
     name = "passing_suite",
@@ -8,5 +9,32 @@ bun_test(
 bun_test(
     name = "failing_suite",
     srcs = ["failing.test.ts"],
-    tags = ["manual"],
+)
+
+sh_test(
+    name = "bun_test_failing_suite_test",
+    srcs = ["failing_suite_shape.sh"],
+    args = ["$(location //tests/bun_test_test:BUILD.bazel)"],
+    data = ["//tests/bun_test_test:BUILD.bazel"],
+)
+
+sh_test(
+    name = "bun_test_cache_hit_test",
+    srcs = ["cache_hit_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
+)
+
+sh_test(
+    name = "bun_test_cache_miss_test",
+    srcs = ["cache_miss_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
+)
+
+sh_test(
+    name = "bun_test_junit_output_test",
+    srcs = ["junit_shape.sh"],
+    args = ["$(location //internal:bun_test.bzl)"],
+    data = ["//internal:bun_test.bzl"],
 )

tests/bun_test_test/cache_hit_shape.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Eq 'set -euo pipefail' "${rule_file}"
+grep -Eq 'src_args = " "\.join' "${rule_file}"
+grep -Eq 'exec "\$\{bun_bin\}" test \{src_args\} "\$@"' "${rule_file}"

tests/bun_test_test/cache_miss_shape.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Eq 'files = \[bun_bin\] \+ ctx\.files\.srcs \+ ctx\.files\.data' "${rule_file}"
+grep -Eq '"srcs": attr\.label_list\(' "${rule_file}"

tests/bun_test_test/failing_suite_shape.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+build_file="$1"
+
+grep -Eq 'name = "failing_suite"' "${build_file}"
+if grep -Eq 'tags = \["manual"\]' "${build_file}"; then
+  echo "failing_suite must be automated (not manual-only)" >&2
+  exit 1
+fi

tests/bun_test_test/junit_shape.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+rule_file="$1"
+
+grep -Eq 'exec "\$\{bun_bin\}" test \{src_args\} .*"\$@"' "${rule_file}"
+grep -Eq 'if \[\[ -n "\$\{TESTBRIDGE_TEST_ONLY:-\}" \]\]' "${rule_file}"