tests: use fewer default paths (#44432)

Set config:install_tree:root and modules:default:roots to something
sensible.

5 files changed, 60 insertions, 69 deletions

diff --git a/lib/spack/spack/test/config.py b/lib/spack/spack/test/config.py
index 64fe403daa..14b76b06bf 100644
--- a/lib/spack/spack/test/config.py
+++ b/lib/spack/spack/test/config.py
@@ -492,7 +492,7 @@ full_padded_string = os.path.join(os.sep + "path", os.sep.join(reps))[:MAX_PADDE
     ],
 )
 def test_parse_install_tree(config_settings, expected, mutable_config):
-    expected_root = expected[0] or spack.store.DEFAULT_INSTALL_TREE_ROOT
+    expected_root = expected[0] or mutable_config.get("config:install_tree:root")
     expected_unpadded_root = expected[1] or expected_root
     expected_proj = expected[2] or spack.directory_layout.default_projections
 
@@ -575,7 +575,7 @@ def test_change_or_add(mutable_config, mock_packages):
     ],
 )
 def test_parse_install_tree_padded(config_settings, expected, mutable_config):
-    expected_root = expected[0] or spack.store.DEFAULT_INSTALL_TREE_ROOT
+    expected_root = expected[0] or mutable_config.get("config:install_tree:root")
     expected_unpadded_root = expected[1] or expected_root
     expected_proj = expected[2] or spack.directory_layout.default_projections
 
@@ -761,25 +761,20 @@ def test_internal_config_from_data():
     assert config.get("config:checksum", scope="higher") is True
 
 
-def test_keys_are_ordered():
+def test_keys_are_ordered(configuration_dir):
     """Test that keys in Spack YAML files retain their order from the file."""
     expected_order = (
-        "bin",
-        "man",
-        "share/man",
-        "share/aclocal",
-        "lib",
-        "lib64",
-        "include",
-        "lib/pkgconfig",
-        "lib64/pkgconfig",
-        "share/pkgconfig",
-        "",
+        "./bin",
+        "./man",
+        "./share/man",
+        "./share/aclocal",
+        "./lib/pkgconfig",
+        "./lib64/pkgconfig",
+        "./share/pkgconfig",
+        "./",
     )
 
-    config_scope = spack.config.ConfigScope(
-        "modules", os.path.join(spack.paths.test_path, "data", "config")
-    )
+    config_scope = spack.config.ConfigScope("modules", configuration_dir.join("site"))
 
     data = config_scope.get_section("modules")
 
diff --git a/lib/spack/spack/test/conftest.py b/lib/spack/spack/test/conftest.py
index 99eac4004f..7a6bd0622f 100644
--- a/lib/spack/spack/test/conftest.py
+++ b/lib/spack/spack/test/conftest.py
@@ -12,6 +12,7 @@ import itertools
 import json
 import os
 import os.path
+import pathlib
 import re
 import shutil
 import stat
@@ -32,6 +33,7 @@ import llnl.util.tty as tty
 from llnl.util.filesystem import copy_tree, mkdirp, remove_linked_tree, touchp, working_dir
 
 import spack.binary_distribution
+import spack.bootstrap.core
 import spack.caches
 import spack.cmd.buildcache
 import spack.compiler
@@ -682,36 +684,34 @@ def configuration_dir(tmpdir_factory, linux_os):
     directory path.
     """
     tmpdir = tmpdir_factory.mktemp("configurations")
+    install_tree_root = tmpdir_factory.mktemp("opt")
+    modules_root = tmpdir_factory.mktemp("share")
+    tcl_root = modules_root.ensure("modules", dir=True)
+    lmod_root = modules_root.ensure("lmod", dir=True)
 
     # <test_path>/data/config has mock config yaml files in it
     # copy these to the site config.
-    test_config = py.path.local(spack.paths.test_path).join("data", "config")
-    test_config.copy(tmpdir.join("site"))
+    test_config = pathlib.Path(spack.paths.test_path) / "data" / "config"
+    shutil.copytree(test_config, tmpdir.join("site"))
 
     # Create temporary 'defaults', 'site' and 'user' folders
     tmpdir.ensure("user", dir=True)
 
-    # Slightly modify config.yaml and compilers.yaml
-    if sys.platform == "win32":
-        locks = False
-    else:
-        locks = True
-
+    # Fill out config.yaml, compilers.yaml and modules.yaml templates.
     solver = os.environ.get("SPACK_TEST_SOLVER", "clingo")
-    config_yaml = test_config.join("config.yaml")
-    modules_root = tmpdir_factory.mktemp("share")
-    tcl_root = modules_root.ensure("modules", dir=True)
-    lmod_root = modules_root.ensure("lmod", dir=True)
-    content = "".join(config_yaml.read()).format(solver, locks, str(tcl_root), str(lmod_root))
-    t = tmpdir.join("site", "config.yaml")
-    t.write(content)
-
-    compilers_yaml = test_config.join("compilers.yaml")
-    content = "".join(compilers_yaml.read()).format(
-        linux_os=linux_os, target=str(archspec.cpu.host().family)
-    )
-    t = tmpdir.join("site", "compilers.yaml")
-    t.write(content)
+    locks = sys.platform != "win32"
+    config = tmpdir.join("site", "config.yaml")
+    config_template = test_config / "config.yaml"
+    config.write(config_template.read_text().format(install_tree_root, solver, locks))
+
+    target = str(archspec.cpu.host().family)
+    compilers = tmpdir.join("site", "compilers.yaml")
+    compilers_template = test_config / "compilers.yaml"
+    compilers.write(compilers_template.read_text().format(linux_os=linux_os, target=target))
+
+    modules = tmpdir.join("site", "modules.yaml")
+    modules_template = test_config / "modules.yaml"
+    modules.write(modules_template.read_text().format(tcl_root, lmod_root))
     yield tmpdir
 
 
@@ -1702,7 +1702,7 @@ def mock_executable(tmp_path):
         executable_path = executable_dir / name
         if sys.platform == "win32":
             executable_path = executable_dir / (name + ".bat")
-        executable_path.write_text(f"{ shebang }{ output }\n")
+        executable_path.write_text(f"{shebang}{output}\n")
         executable_path.chmod(0o755)
         return executable_path
 
diff --git a/lib/spack/spack/test/data/config/concretizer.yaml b/lib/spack/spack/test/data/config/concretizer.yaml
index 538182c957..a89a42a906 100644
--- a/lib/spack/spack/test/data/config/concretizer.yaml
+++ b/lib/spack/spack/test/data/config/concretizer.yaml
@@ -1,5 +1,5 @@
 concretizer:
-  reuse: True
+  reuse: true
   targets:
     granularity: microarchitectures
     host_compatible: false
diff --git a/lib/spack/spack/test/data/config/config.yaml b/lib/spack/spack/test/data/config/config.yaml
index eb239a5b99..4a8da4e25f 100644
--- a/lib/spack/spack/test/data/config/config.yaml
+++ b/lib/spack/spack/test/data/config/config.yaml
@@ -1,6 +1,6 @@
 config:
   install_tree:
-    root: $spack/opt/spack
+    root: {0}
   template_dirs:
   - $spack/share/spack/templates
   - $spack/lib/spack/spack/test/data/templates
@@ -13,5 +13,5 @@ config:
   ssl_certs: $SSL_CERT_FILE
   checksum: true
   dirty: false
-  concretizer: {0}
-  locks: {1}
+  concretizer: {1}
+  locks: {2}
diff --git a/lib/spack/spack/test/data/config/modules.yaml b/lib/spack/spack/test/data/config/modules.yaml
index f217dd7eaf..bd19ca066a 100644
--- a/lib/spack/spack/test/data/config/modules.yaml
+++ b/lib/spack/spack/test/data/config/modules.yaml
@@ -14,29 +14,25 @@
 #   ~/.spack/modules.yaml
 # -------------------------------------------------------------------------
 modules:
-  default: {}
   prefix_inspections:
-    bin:
-      - PATH
-    man:
-      - MANPATH
-    share/man:
-      - MANPATH
-    share/aclocal:
-      - ACLOCAL_PATH
-    lib:
-      - LIBRARY_PATH
-      - LD_LIBRARY_PATH
-    lib64:
-      - LIBRARY_PATH
-      - LD_LIBRARY_PATH
-    include:
-      - CPATH
-    lib/pkgconfig:
-      - PKG_CONFIG_PATH
-    lib64/pkgconfig:
-      - PKG_CONFIG_PATH
-    share/pkgconfig:
-      - PKG_CONFIG_PATH
-    '':
-      - CMAKE_PREFIX_PATH
+    ./bin: [PATH]
+    ./man: [MANPATH]
+    ./share/man: [MANPATH]    
+    ./share/aclocal: [ACLOCAL_PATH]
+    ./lib/pkgconfig: [PKG_CONFIG_PATH]
+    ./lib64/pkgconfig: [PKG_CONFIG_PATH]
+    ./share/pkgconfig: [PKG_CONFIG_PATH]
+    ./: [CMAKE_PREFIX_PATH]
+  default:
+    roots:
+     tcl: {0}
+     lmod: {1}
+    enable: []
+    tcl:
+      all:
+        autoload: direct
+    lmod:
+      all:
+        autoload: direct
+      hierarchy:
+        - mpi