From 56b89d952cd55daaa3564311e24bb8c9b82476c6 Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Wed, 5 Jan 2022 15:27:34 -0500
Subject: [PATCH] package: native win gem correctly specifies required ruby
 version

---
 rakelib/extensions.rake        |  9 +++++++++
 scripts/test-gem-file-contents | 34 ++++++++++++++++++++++++++++++----
 2 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/rakelib/extensions.rake b/rakelib/extensions.rake
index 9cbb2fa758..af3a2f6df1 100644
--- a/rakelib/extensions.rake
+++ b/rakelib/extensions.rake
@@ -405,6 +405,15 @@ else
       spec.files.reject! { |path| File.fnmatch?("gumbo-parser/**/*", path) }
       spec.dependencies.reject! { |dep| dep.name == "mini_portile2" }
 
+      # I would like rake-compiler to do this, but can't quite figure it out right now
+      supported_rubies = CROSS_RUBIES.select { |c| spec.platform =~ c.platform }
+        .map { |c| Gem::Version.new(c.ver) }
+        .sort
+      spec.required_ruby_version = [
+        ">= #{supported_rubies.first.to_s.split(".").take(2).join(".")}",
+        "< #{supported_rubies.last.to_s.split(".").take(2).join(".").succ}.dev",
+      ]
+
       # when pre-compiling a native gem, package all the C headers sitting in ext/nokogiri/include
       # which were copied there in the $INSTALLFILES section of extconf.rb.
       # (see scripts/test-gem-file-contents and scripts/test-gem-installation for tests)
diff --git a/scripts/test-gem-file-contents b/scripts/test-gem-file-contents
index ce33c676f9..08a3c0905f 100755
--- a/scripts/test-gem-file-contents
+++ b/scripts/test-gem-file-contents
@@ -68,8 +68,7 @@ puts "Testing '#{gemfile}' (#{gemspec.platform})"
 describe File.basename(gemfile) do
   let(:cross_rubies_path) { File.join(File.dirname(__FILE__), "..", ".cross_rubies") }
 
-  # Ruby versions that should be supported by the native gem depending on the platform
-  let(:native_ruby_versions) do
+  let(:platform_supported_ruby_versions) do
     File.read(cross_rubies_path).split("\n").map do |line|
       ver, plat = line.split(":")
       next if plat != gemspec.platform.to_s
@@ -77,6 +76,13 @@ describe File.basename(gemfile) do
     end.compact.uniq.sort
   end
 
+  let(:all_supported_ruby_versions) do
+    File.read(cross_rubies_path).split("\n").map do |line|
+      ver, _ = line.split(":")
+      ver.split(".").take(2).join(".") # ugh
+    end.uniq.sort
+  end
+
   describe "setup" do
     it "gemfile contains some files" do
       actual = gemfile_contents.length
@@ -179,7 +185,7 @@ describe File.basename(gemfile) do
     end
 
     it "contains expected shared library files " do
-      native_ruby_versions.each do |version|
+      platform_supported_ruby_versions.each do |version|
         actual = gemfile_contents.find do |p|
           File.fnmatch?("lib/nokogiri/#{version}/nokogiri.{so,bundle}", p, File::FNM_EXTGLOB)
         end
@@ -194,7 +200,27 @@ describe File.basename(gemfile) do
       actual = gemfile_contents.find_all do |p|
         File.fnmatch?("lib/nokogiri/**/*.{so,bundle}", p, File::FNM_EXTGLOB)
       end
-      assert_equal(native_ruby_versions.length, actual.length, "did not expect extra shared library files")
+      assert_equal(
+        platform_supported_ruby_versions.length,
+        actual.length,
+        "did not expect extra shared library files",
+      )
+    end
+
+    it "sets required_ruby_version appropriately" do
+      unsupported_versions = all_supported_ruby_versions - platform_supported_ruby_versions
+      platform_supported_ruby_versions.each do |v|
+        assert(
+          gemspec.required_ruby_version.satisfied_by?(Gem::Version.new(v)),
+          "required_ruby_version='#{gemspec.required_ruby_version}' should support ruby #{v}",
+        )
+      end
+      unsupported_versions.each do |v|
+        refute(
+          gemspec.required_ruby_version.satisfied_by?(Gem::Version.new(v)),
+          "required_ruby_version='#{gemspec.required_ruby_version}' should not support ruby #{v}",
+        )
+      end
     end
   end if gemspec.platform.is_a?(Gem::Platform) && gemspec.platform.cpu