end-to-end/just-mr: Add test to check special entries are correctly ignored

...during setup of git roots, when the appropriate pragma is set.

Check both symlinks and other special entries, e.g., submodules.

2 files changed, 124 insertions, 0 deletions

diff --git a/test/end-to-end/just-mr/TARGETS b/test/end-to-end/just-mr/TARGETS
index c1d00623..c0c5bad3 100644
--- a/test/end-to-end/just-mr/TARGETS
+++ b/test/end-to-end/just-mr/TARGETS
@@ -226,6 +226,12 @@
   , "test": ["gc-drop.sh"]
   , "deps": [["", "mr-tool-under-test"], ["", "tool-under-test"]]
   }
+, "ignore-special":
+  { "type": ["@", "rules", "shell/test", "script"]
+  , "name": ["ignore-special"]
+  , "test": ["ignore-special.sh"]
+  , "deps": [["", "mr-tool-under-test"], ["", "tool-under-test"]]
+  }
 , "TESTS":
   { "type": ["@", "rules", "test", "suite"]
   , "arguments_config": ["TEST_BOOTSTRAP_JUST_MR", "TEST_COMPATIBLE_REMOTE"]
@@ -265,6 +271,7 @@
               , "fetch-absent-archives"
               , "fetch-absent-archives-symlinks"
               , "fetch-absent-distdir-archive"
+              , "ignore-special"
               ]
             ]
           }
diff --git a/test/end-to-end/just-mr/ignore-special.sh b/test/end-to-end/just-mr/ignore-special.sh
new file mode 100644
index 00000000..ea4cbf1d
--- /dev/null
+++ b/test/end-to-end/just-mr/ignore-special.sh
@@ -0,0 +1,117 @@
+#!/bin/sh
+# Copyright 2025 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.
+
+###
+# This test checks that special entries, be it symlinks or git submodules, are
+# properly ignored during setup of git roots when the "special":"ignore" pragma
+# is provided.
+##
+
+set -eu
+
+env
+
+readonly ROOT="${PWD}"
+readonly JUST="${PWD}/bin/tool-under-test"
+readonly JUST_MR="${PWD}/bin/mr-tool-under-test"
+readonly LBR="${TEST_TMPDIR}/local-build-root"
+readonly OUT="${TEST_TMPDIR}/build-output"
+readonly REPO_DIRS="${TEST_TMPDIR}/repos"
+readonly WRKDIR="${PWD}/work"
+
+# Create a Git repo 'foo'
+mkdir -p "${REPO_DIRS}/foo"
+cd "${REPO_DIRS}/foo"
+git init
+git checkout --orphan foomaster
+git config user.name 'N.O.Body'
+git config user.email 'nobody@example.org'
+touch data
+git add . -f
+git commit -m 'Init foo' 2>&1
+
+# Create a Git repo 'foo' with a submodule
+mkdir -p "${REPO_DIRS}/bar"
+cd "${REPO_DIRS}/bar"
+git init
+git checkout --orphan barmaster
+git config user.name 'N.O.Body'
+git config user.email 'nobody@example.org'
+git -c protocol.file.allow=always submodule add "${REPO_DIRS}/foo/.git" # submodule foo
+ln -s ../nonexistent a_link  # a symlink to be ignored
+echo '{"":{"type":"install","deps":[["TREE", null, "."]]}}' >TARGETS
+git add . -f
+git commit -m 'Init bar' 2>&1
+
+# Main repo depending on repo 'bar'
+mkdir -p "${WRKDIR}"
+cd "${WRKDIR}"
+touch ROOT
+echo '{"":{"type":"install","deps":[["@", "bar", "", ""]]}}' >TARGETS
+
+echo
+echo Check git root fails without pragma:ignore
+echo
+
+cat > repos.json << EOF
+{ "main": ""
+, "repositories":
+  { "":
+    { "repository": {"type": "file", "path": "."}
+    , "bindings": {"bar": "bar"}
+    }
+  , "bar":
+    { "repository":
+      { "type": "file"
+      , "path": "${REPO_DIRS}/bar"
+      , "pragma": {"to_git": true}
+      }
+    }
+  }
+}
+EOF
+
+"${JUST_MR}" --norc --just "${JUST}" --local-build-root "${LBR}" build 2>&1 \
+    && echo "this should fail" && exit 1
+echo
+echo "failed as expected"
+
+cat > repos.json << EOF
+{ "main": ""
+, "repositories":
+  { "":
+    { "repository": {"type": "file", "path": "."}
+    , "bindings": {"bar": "bar"}
+    }
+  , "bar":
+    { "repository":
+      { "type": "file"
+      , "path": "${REPO_DIRS}/bar"
+      , "pragma": {"to_git": true, "special":"ignore"}
+      }
+    }
+  }
+}
+EOF
+
+echo
+echo Check git root with pragma:ignore succeeds
+echo
+"${JUST_MR}" --norc --just "${JUST}" --local-build-root "${LBR}" install -o "${OUT}" 2>&1
+
+[ ! -e "${OUT}/a_link" ]     # symlink should not be there
+[ ! -e "${OUT}/foo" ]        # submodule should not be there
+
+echo OK