1 files changed, 37 insertions, 0 deletions
diff --git a/spec/bundler/bundler/version_ranges_spec.rb b/spec/bundler/bundler/version_ranges_spec.rb
new file mode 100644
index 0000000000..f746aa88ad
--- /dev/null
+++ b/spec/bundler/bundler/version_ranges_spec.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+require "spec_helper"
+require "bundler/version_ranges"
+
+RSpec.describe Bundler::VersionRanges do
+  describe ".empty?" do
+    shared_examples_for "empty?" do |exp, *req|
+      it "returns #{exp} for #{req}" do
+        r = Gem::Requirement.new(*req)
+        ranges = described_class.for(r)
+        expect(described_class.empty?(*ranges)).to eq(exp), "expected `#{r}` #{exp ? "" : "not "}to be empty"
+      end
+    end
+
+    include_examples "empty?", false
+    include_examples "empty?", false, "!= 1"
+    include_examples "empty?", false, "!= 1", "= 2"
+    include_examples "empty?", false, "!= 1", "> 1"
+    include_examples "empty?", false, "!= 1", ">= 1"
+    include_examples "empty?", false, "= 1", ">= 0.1", "<= 1.1"
+    include_examples "empty?", false, "= 1", ">= 1", "<= 1"
+    include_examples "empty?", false, "= 1", "~> 1"
+    include_examples "empty?", false, ">= 0.z", "= 0"
+    include_examples "empty?", false, ">= 0"
+    include_examples "empty?", false, ">= 1.0.0", "< 2.0.0"
+    include_examples "empty?", false, "~> 1"
+    include_examples "empty?", false, "~> 2.0", "~> 2.1"
+    include_examples "empty?", true, "!= 1", "< 2", "> 2"
+    include_examples "empty?", true, "!= 1", "<= 1", ">= 1"
+    include_examples "empty?", true, "< 2", "> 2"
+    include_examples "empty?", true, "= 1", "!= 1"
+    include_examples "empty?", true, "= 1", "= 2"
+    include_examples "empty?", true, "= 1", "~> 2"
+    include_examples "empty?", true, ">= 0", "<= 0.a"
+    include_examples "empty?", true, "~> 2.0", "~> 3"
+  end
+end