add test for correctly resolving stdlib

conda_smithy/configure_feedstock.py

@@ -509,6 +509,8 @@ def _collapse_subpackage_variants(
         "macos_machine",
         "channel_sources",
         "channel_targets",
+        "c_stdlib",
+        "c_stdlib_version",
         "docker_image",
         "build_number_decrement",
         # The following keys are required for some of our aarch64 builds

news/1888-ensure-stdlib-renders-correctly.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* Ensure new ``{{ stdlib("c") }}`` correctly populates CI config. (#1840 via #1888)
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>

tests/conftest.py

@@ -196,6 +196,51 @@ def py_recipe(config_yaml, request):
     )
 
 
+@pytest.fixture(scope="function")
+def stdlib_recipe(config_yaml, request):
+    with open(os.path.join(config_yaml, "recipe", "meta.yaml"), "w") as fh:
+        fh.write(
+            """
+package:
+    name: stdlib-test
+    version: 1.0.0
+requirements:
+    build:
+        - {{ compiler("c") }}
+        - {{ stdlib("c") }}
+    host:
+        - zlib
+about:
+    home: home
+    """
+        )
+    with open(
+        os.path.join(config_yaml, "recipe", "stdlib_config.yaml"), "w"
+    ) as f:
+        f.write(
+            """\
+c_stdlib:
+  - sysroot                     # [linux]
+  - macosx_deployment_target    # [osx]
+  - vs                          # [win]
+c_stdlib_version:               # [unix]
+  - 2.12                        # [linux64]
+  - 2.17                        # [aarch64 or ppc64le]
+  - 10.9                        # [osx and x86_64]
+  - 11.0                        # [osx and arm64]
+"""
+        )
+    return RecipeConfigPair(
+        str(config_yaml),
+        _load_forge_config(
+            config_yaml,
+            exclusive_config_file=os.path.join(
+                config_yaml, "recipe", "stdlib_config.yaml"
+            ),
+        ),
+    )
+
+
 @pytest.fixture(scope="function")
 def upload_on_branch_recipe(config_yaml, request):
     with open(os.path.join(config_yaml, "recipe", "meta.yaml"), "w") as fh:

tests/test_configure_feedstock.py

@@ -1,6 +1,7 @@
 import copy
 import logging
 import os
+import re
 import textwrap
 
 import pytest
@@ -210,6 +211,41 @@ def test_py_matrix_on_azure(py_recipe, jinja_env):
     assert len(os.listdir(matrix_dir)) == 6
 
 
+def test_stdlib_on_azure(stdlib_recipe, jinja_env):
+    configure_feedstock.render_azure(
+        jinja_env=jinja_env,
+        forge_config=stdlib_recipe.config,
+        forge_dir=stdlib_recipe.recipe,
+    )
+    # this configuration should be run
+    assert stdlib_recipe.config["azure"]["enabled"]
+    matrix_dir = os.path.join(stdlib_recipe.recipe, ".ci_support")
+    assert os.path.isdir(matrix_dir)
+    # find stdlib-config in generated yaml files (plus version, on unix)
+    with open(os.path.join(matrix_dir, "linux_64_.yaml")) as f:
+        linux_lines = f.readlines()
+        linux_content = "".join(linux_lines)
+    # multiline pattern to ensure we don't match other stuff accidentally
+    assert bool(re.match(r"(?s).*c_stdlib:\s*- sysroot", linux_content))
+    assert bool(
+        re.match(r"(?s).*c_stdlib_version:\s*- ['\"]?2\.\d+", linux_content)
+    )
+    with open(os.path.join(matrix_dir, "osx_64_.yaml")) as f:
+        osx_lines = f.readlines()
+        osx_content = "".join(osx_lines)
+    assert bool(
+        re.match(r"(?s).*c_stdlib:\s*- macosx_deployment_target", osx_content)
+    )
+    assert bool(
+        re.match(r"(?s).*c_stdlib_version:\s*- ['\"]?1\d\.\d+", osx_content)
+    )
+    with open(os.path.join(matrix_dir, "win_64_.yaml")) as f:
+        win_lines = f.readlines()
+        win_content = "".join(win_lines)
+    assert bool(re.match(r"(?s).*c_stdlib:\s*- vs", win_content))
+    # no stdlib-version expected on windows
+
+
 def test_upload_on_branch_azure(upload_on_branch_recipe, jinja_env):
     configure_feedstock.render_azure(
         jinja_env=jinja_env,