test/integration/projects/create-pkg-config: Add

create-pkg-config's output is not covered by any test, even though the
template and the Requires cleanup produce exact text that pkg-config
consumes, so regressions in the generated file went unnoticed for a long
time.

Add an integration test that runs create-pkg-config with a full option set,
with space- and comma-mixed Requires input, and with a
Requires.private-only input, and compares the output against a reference
file.

Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: Jan Lindemann <jan@janware.com>

test/integration/jw-pkg/projects/create-pkg-config/Makefile

@@ -0,0 +1,19 @@
+TOPDIR = ../../../../..
+
+OUTPUT = test-out.txt
+REFERENCE = test-expected.txt
+
+include $(TOPDIR)/make/proj.mk
+include $(TOPDIR)/make/test-jw-pkg.mk
+
+all:
+
+$(OUTPUT): Makefile test.sh
+	bash ./test.sh $(TEST_CMD_LINE) > $(OUTPUT).tmp
+	diff $(REFERENCE) $(OUTPUT).tmp
+	mv $(OUTPUT).tmp $(OUTPUT)
+
+test: $(OUTPUT)
+clean: test.integration.in-tree.clean
+test.integration.in-tree.clean:
+	rm -f $(OUTPUT) $(OUTPUT).tmp

test/integration/jw-pkg/projects/create-pkg-config/test-expected.txt

@@ -0,0 +1,31 @@
+============= Running: jw-pkg.py -t ../../../../.. --log-level info projects create-pkg-config -n jw-pkg -s jw-pkg test -p /usr -v 1.0 --cflags=-I/usr/include --libflags=-L/usr/lib -ljw-pkg -r jw-core >= 1.0, jw-base -R jw-devel
+prefix = /usr
+exec_prefix = ${prefix}
+includedir = ${prefix}/include
+libdir = ${exec_prefix}/lib
+
+Name: jw-pkg
+Description: jw-pkg test
+Version: 1.0
+Cflags: -I/usr/include
+Libs: -L/usr/lib -ljw-pkg
+Requires: jw-core >= 1.0, jw-base
+Requires.private: jw-devel============= Running: jw-pkg.py -t ../../../../.. --log-level info projects create-pkg-config -n jw-pkg -p /usr -v 1.0 -r foo bar>=2.0, baz
+prefix = /usr
+exec_prefix = ${prefix}
+includedir = ${prefix}/include
+libdir = ${exec_prefix}/lib
+
+Name: jw-pkg
+Description: 
+Version: 1.0
+Requires: foo, bar >= 2.0, baz============= Running: jw-pkg.py -t ../../../../.. --log-level info projects create-pkg-config -n jw-pkg -p /usr -v 1.0 -R qux
+prefix = /usr
+exec_prefix = ${prefix}
+includedir = ${prefix}/include
+libdir = ${exec_prefix}/lib
+
+Name: jw-pkg
+Description: 
+Version: 1.0
+Requires.private: qux

test/integration/jw-pkg/projects/create-pkg-config/test.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# shellcheck disable=SC2048,SC2086
+# Unquoted $* is intentional — the jw-pkg command line
+
+export LC_ALL="C"
+set -euo pipefail
+
+jw_pkg_py="$*"
+
+run()
+{
+	local log_cmd
+	# shellcheck disable=SC2001
+	log_cmd=$(echo "$*" | sed 's|.*python3[0-9.]*\s\+\(\.\.\/\)*scripts/||')
+	printf '============= Running: %s\n' "$log_cmd"
+	"$@"
+}
+
+run $jw_pkg_py projects create-pkg-config \
+	-n jw-pkg -s 'jw-pkg test' -p /usr -v 1.0 \
+	--cflags=-I/usr/include --libflags=-L/usr/lib\ -ljw-pkg \
+	-r 'jw-core >= 1.0, jw-base' -R 'jw-devel'
+
+run $jw_pkg_py projects create-pkg-config \
+	-n jw-pkg -p /usr -v 1.0 -r 'foo bar>=2.0, baz'
+
+run $jw_pkg_py projects create-pkg-config \
+	-n jw-pkg -p /usr -v 1.0 -R 'qux'