Add end-to-end test with serve building several targets

... simultaneously, in order to find race conditions during
the build.

3 files changed, 135 insertions, 0 deletions

diff --git a/test/end-to-end/serve-service/TARGETS b/test/end-to-end/serve-service/TARGETS
index 17e83785..47f273ff 100644
--- a/test/end-to-end/serve-service/TARGETS
+++ b/test/end-to-end/serve-service/TARGETS
@@ -113,6 +113,18 @@
   , "repos": ["describe (data)"]
   , "keep": ["out/describe.orig", "out/describe"]
   }
+, "serve-many-targets (data)":
+  { "type": "install"
+  , "files": {"ROOT": "data/ROOT", "TARGETS": "data/targets/TARGETS.transform"}
+  }
+, "serve-many-targets":
+  { "type": ["end-to-end", "with serve"]
+  , "name": ["serve-many-targets"]
+  , "test": ["serve_many_targets.sh"]
+  , "deps":
+    [["end-to-end", "tool-under-test"], ["end-to-end", "mr-tool-under-test"]]
+  , "repos": ["serve-many-targets (data)"]
+  }
 , "TESTS":
   { "type": "install"
   , "tainted": ["test"]
@@ -122,6 +134,7 @@
     , "$1":
       [ [ "serve-target-remote-build"
         , "serve-target-remote-build-dispatch"
+        , "serve-many-targets"
         , "serve-target-cache-hit"
         , "serve-start-execute"
         , "serve-start-execute-sharding"
diff --git a/test/end-to-end/serve-service/data/targets/TARGETS.transform b/test/end-to-end/serve-service/data/targets/TARGETS.transform
new file mode 100644
index 00000000..2a2d4ade
--- /dev/null
+++ b/test/end-to-end/serve-service/data/targets/TARGETS.transform
@@ -0,0 +1,21 @@
+{ "":
+  {"type": "export", "target": "multiple, upper", "flexible_config": ["DATA"]}
+, "blob":
+  { "type": "file_gen"
+  , "arguments_config": ["DATA"]
+  , "name": "data.orig"
+  , "data": {"type": "var", "name": "DATA"}
+  }
+, "multiple":
+  { "type": "generic"
+  , "outs": ["data.tripple"]
+  , "cmds": ["cat data.orig data.orig data.orig > data.tripple"]
+  , "deps": ["blob"]
+  }
+, "multiple, upper":
+  { "type": "generic"
+  , "outs": ["data.txt"]
+  , "cmds": ["cat data.tripple | tr a-z A-Z > data.txt"]
+  , "deps": ["multiple"]
+  }
+}
diff --git a/test/end-to-end/serve-service/serve_many_targets.sh b/test/end-to-end/serve-service/serve_many_targets.sh
new file mode 100644
index 00000000..c5da4606
--- /dev/null
+++ b/test/end-to-end/serve-service/serve_many_targets.sh
@@ -0,0 +1,101 @@
+#!/bin/sh
+# Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eu
+
+env
+readonly JUST="${PWD}/bin/tool-under-test"
+readonly JUST_MR="${PWD}/bin/mr-tool-under-test"
+readonly LBR="${TEST_TMPDIR}/local-build-root"
+readonly OUT="${TEST_TMPDIR}/output-dir"
+
+COMPAT=""
+if [ "${COMPATIBLE:-}" = "YES" ]; then
+  COMPAT="--compatible"
+fi
+
+mkdir work
+cd work
+touch ROOT
+cat > repos.json <<EOF
+{ "repositories":
+  { "":
+    { "repository": {"type": "file", "path": "."}
+    , "bindings": {"transform": "transform"}
+    }
+  , "transform":
+    { "repository":
+      { "type": "git"
+      , "commit": "$COMMIT_0"
+      , "pragma": {"absent": true}
+      , "repository": "http://non-existent.example.org/data.git"
+      , "branch": "master"
+      }
+    }
+  }
+}
+EOF
+cat repos.json
+
+cat > TARGETS <<'EOF'
+{ "":
+  { "type": "install"
+  , "files": {"a": "a", "b": "b", "c": "c", "d": "d", "e": "e", "f": "f"}
+  }
+, "a":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "a"}
+  }
+, "b":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "b"}
+  }
+, "c":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "c"}
+  }
+, "d":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "d"}
+  }
+, "e":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "e"}
+  }
+, "f":
+  { "type": "configure"
+  , "target": ["@", "transform", "", ""]
+  , "config": {"type": "singleton_map", "key": "DATA", "value": "f"}
+  }
+}
+EOF
+
+"${JUST_MR}" --norc --local-build-root "${LBR}" --just "${JUST}" \
+             -R "${SERVE}" -r "${REMOTE_EXECUTION_ADDRESS}" ${COMPAT} \
+             install -o "${OUT}" 2>&1
+
+[ "$(cat "${OUT}/a")" = "AAA" ]
+[ "$(cat "${OUT}/b")" = "BBB" ]
+[ "$(cat "${OUT}/c")" = "CCC" ]
+[ "$(cat "${OUT}/d")" = "DDD" ]
+[ "$(cat "${OUT}/e")" = "EEE" ]
+[ "$(cat "${OUT}/f")" = "FFF" ]
+
+echo OK