feat: git source test

tests/data/pixi_build/cpp-with-git-source/.gitignore

@@ -0,0 +1,5 @@
+# pixi environments
+.pixi
+
+# The build directory
+.build

tests/data/pixi_build/cpp-with-git-source/README.md

@@ -0,0 +1,14 @@
+# Simple C++ SDL Example with specified source path
+
+This is a simple pixi demo that showcases how to use C++ and SDL with specified source path.
+
+## How to use?
+
+Make sure you have `pixi` available in your terminal.
+Navigate to this directory and run:
+
+```shell
+
+# Start the build executable
+pixi run start
+```

tests/data/pixi_build/cpp-with-git-source/pixi.toml

@@ -0,0 +1,39 @@
+[workspace]
+channels = ["https://prefix.dev/conda-forge"]
+platforms = ["win-64", "linux-64", "osx-64", "osx-arm64"]
+preview = ["pixi-build"]
+
+[dependencies]
+# Define a dependency on ourselves. This will invoke the build backend to build
+# the C++ code and install the executable in an environment ready to be used.
+sdl_example = { path = "." }
+
+[tasks.start]
+cmd = "sdl_example"
+description = "A tasks to run the executable that is build by the package section."
+
+[tasks]
+test = "sdl_example -h"
+
+[package]
+authors = ["Bas Zalmstra <[email protected]>"]
+description = "Showcases how to create a simple C++ executable with Pixi"
+name = "sdl_example"
+version = "0.1.0"
+
+[package.build.source]
+branch = "main"
+git = "https://github.com/prefix-dev/pixi-build-testsuite.git"
+subdirectory = "tests/data/pixi_build/cpp-with-path-to-source/project"
+
+[package.build.backend]
+channels = [
+  "https://prefix.dev/pixi-build-backends",
+  "https://prefix.dev/conda-forge",
+]
+name = "pixi-build-cmake"
+version = "*"
+
+[package.host-dependencies]
+# This ensures that SDL2 is available at build time.
+sdl2 = ">=2.26.5,<3.0"

tests/integration_python/conftest.py

@@ -3,13 +3,12 @@
 import shutil
 from pathlib import Path
 from typing import Any, cast
+from urllib.parse import unquote, urlparse
+from urllib.request import url2pathname
 
 import dotenv
 import pytest
 
-from urllib.parse import urlparse, unquote
-from urllib.request import url2pathname
-
 from .common import (
     CURRENT_PLATFORM,
     Workspace,

tests/integration_python/test_build.py

@@ -459,13 +459,17 @@ def test_source_path(pixi: Path, build_data: Path, tmp_pixi_workspace: Path) ->
     """
     Test path in `[package.build.source]`
     """
-    project = "cpp-with-path-to-source"
-    test_data = build_data.joinpath(project)
+    test_data = build_data.joinpath("minimal-backend-workspaces", "pixi-build-cmake")
 
     copytree_with_local_backend(
         test_data, tmp_pixi_workspace, dirs_exist_ok=True, copy_function=copy_manifest
     )
 
+    manifest_path = tmp_pixi_workspace.joinpath("pixi.toml")
+    manifest = tomllib.loads(manifest_path.read_text())
+    manifest.setdefault("package", {}).setdefault("build", {})["source"] = {"path": "."}
+    manifest_path.write_text(tomli_w.dumps(manifest))
+
     verify_cli_command(
         [
             pixi,
@@ -512,7 +516,6 @@ def test_target_specific_dependency(
 ) -> None:
     """
     Check that target-specific dependencies are not solved for on other targets.
-    Regression test for prefix-dev/pixi#4542.
     """
     project = "target-specific"
     test_data = build_data.joinpath(project)

tests/integration_python/test_specified_build_source/conftest.py

@@ -0,0 +1,90 @@
+import subprocess
+from dataclasses import dataclass
+from pathlib import Path
+
+import pytest
+
+from ..common import copytree_with_local_backend
+
+
+@dataclass(frozen=True)
+class LocalGitRepo:
+    path: Path
+    main_rev: str
+    other_feature_rev: str
+    tag: str
+
+
+@pytest.fixture
+def local_cpp_git_repo(
+    pixi: Path,
+    build_data: Path,
+    tmp_path_factory: pytest.TempPathFactory,
+) -> LocalGitRepo:
+    """
+    Create a local git repository mirroring the minimal pixi-build-cmake workspace so tests can
+    exercise git sources without touching the network.
+    """
+
+    source_root = build_data.joinpath("minimal-backend-workspaces", "pixi-build-cmake")
+    repo_root = tmp_path_factory.mktemp("git-repo")
+    repo_path = repo_root.joinpath("repo")
+    copytree_with_local_backend(source_root, repo_path)
+
+    marker = repo_path.joinpath("src", "LOCAL_MARKER.txt")
+    marker.write_text("local git fixture marker\n", encoding="utf-8")
+
+    main_source_path = repo_path.joinpath("src", "main.cpp")
+    original_source = main_source_path.read_text(encoding="utf-8")
+
+    def run_git(*args: str) -> str:
+        result = subprocess.run(
+            [str(pixi), "run", "git", *args],
+            cwd=repo_path,
+            capture_output=True,
+            text=True,
+        )
+        if result.returncode != 0:
+            raise RuntimeError(
+                "git command failed ({}):\nstdout: {}\nstderr: {}".format(
+                    " ".join(args), result.stdout, result.stderr
+                )
+            )
+        return result.stdout.strip()
+
+    run_git("init", "-b", "main")
+    run_git("config", "user.email", "[email protected]")
+    run_git("config", "user.name", "Pixi Build Tests")
+    run_git("add", ".")
+    run_git("commit", "-m", "Initial commit")
+
+    run_git("checkout", "-b", "other-feature")
+    feature_text = original_source.replace(
+        "Build backend works", "Build backend works from other-feature branch"
+    )
+    if feature_text == original_source:
+        feature_text = original_source + "\n// other-feature branch tweak\n"
+    main_source_path.write_text(feature_text)
+    run_git("add", main_source_path.relative_to(repo_path).as_posix())
+    run_git("commit", "-m", "Add branch change")
+    other_feature_rev = run_git("rev-parse", "HEAD")
+
+    run_git("checkout", "main")
+    main_update_text = original_source.replace(
+        "Build backend works", "Build backend works on main branch"
+    )
+    if main_update_text == original_source:
+        main_update_text = original_source + "\n// main branch tweak\n"
+    main_source_path.write_text(main_update_text)
+    run_git("add", main_source_path.relative_to(repo_path).as_posix())
+    run_git("commit", "-m", "Update main")
+    main_rev = run_git("rev-parse", "HEAD")
+
+    run_git("tag", "fixture-v1")
+
+    return LocalGitRepo(
+        path=repo_path,
+        main_rev=main_rev,
+        other_feature_rev=other_feature_rev,
+        tag="fixture-v1",
+    )