1 files changed, 92 insertions, 0 deletions
diff --git a/spec/bundler/install/allow_offline_install_spec.rb b/spec/bundler/install/allow_offline_install_spec.rb
new file mode 100644
index 0000000000..1bca055c9f
--- /dev/null
+++ b/spec/bundler/install/allow_offline_install_spec.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+require "spec_helper"
+
+RSpec.describe "bundle install with :allow_offline_install" do
+  before do
+    bundle "config allow_offline_install true"
+  end
+
+  context "with no cached data locally" do
+    it "still installs" do
+      install_gemfile! <<-G, :artifice => "compact_index"
+        source "http://testgemserver.local"
+        gem "rack-obama"
+      G
+      expect(the_bundle).to include_gem("rack 1.0")
+    end
+
+    it "still fails when the network is down" do
+      install_gemfile <<-G, :artifice => "fail"
+        source "http://testgemserver.local"
+        gem "rack-obama"
+      G
+      expect(out).to include("Could not reach host testgemserver.local.")
+      expect(the_bundle).to_not be_locked
+    end
+  end
+
+  context "with cached data locally" do
+    it "will install from the compact index" do
+      system_gems ["rack-1.0.0"]
+
+      install_gemfile! <<-G, :artifice => "compact_index"
+        source "http://testgemserver.local"
+        gem "rack-obama"
+        gem "rack", "< 1.0"
+      G
+
+      expect(the_bundle).to include_gems("rack-obama 1.0", "rack 0.9.1")
+
+      gemfile <<-G
+        source "http://testgemserver.local"
+        gem "rack-obama"
+      G
+
+      bundle! :update, :artifice => "fail"
+      expect(out).to include("Using the cached data for the new index because of a network error")
+
+      expect(the_bundle).to include_gems("rack-obama 1.0", "rack 1.0.0")
+    end
+
+    def break_git_remote_ops!
+      FileUtils.mkdir_p(tmp("broken_path"))
+      File.open(tmp("broken_path/git"), "w", 0o755) do |f|
+        f.puts strip_whitespace(<<-RUBY)
+          #!/usr/bin/env ruby
+          if %w(fetch --force --quiet --tags refs/heads/*:refs/heads/*).-(ARGV).empty? || %w(clone --bare --no-hardlinks --quiet).-(ARGV).empty?
+            warn "git remote ops have been disabled"
+            exit 1
+          end
+          ENV["PATH"] = ENV["PATH"].sub(/^.*?:/, "")
+          exec("git", *ARGV)
+        RUBY
+      end
+
+      old_path = ENV["PATH"]
+      ENV["PATH"] = "#{tmp("broken_path")}:#{ENV["PATH"]}"
+      yield if block_given?
+    ensure
+      ENV["PATH"] = old_path if block_given?
+    end
+
+    it "will install from a cached git repo" do
+      git = build_git "a", "1.0.0", :path => lib_path("a")
+      update_git("a", :path => git.path, :branch => "new_branch")
+      install_gemfile! <<-G
+        gem "a", :git => #{git.path.to_s.dump}
+      G
+
+      break_git_remote_ops! { bundle! :update }
+      expect(out).to include("Using cached git data because of network errors")
+      expect(the_bundle).to be_locked
+
+      break_git_remote_ops! do
+        install_gemfile! <<-G
+          gem "a", :git => #{git.path.to_s.dump}, :branch => "new_branch"
+        G
+      end
+      expect(out).to include("Using cached git data because of network errors")
+      expect(the_bundle).to be_locked
+    end
+  end
+end