Add test coverage for windows host configured IP addresses capability

test/unit/plugins/hosts/windows/cap/configure_ip_addresses_test.rb

@@ -0,0 +1,43 @@
+require_relative "../../../../base"
+
+require_relative "../../../../../../plugins/hosts/windows/cap/configured_ip_addresses"
+
+describe VagrantPlugins::HostWindows::Cap::ConfiguredIPAddresses do
+
+  let(:subject){ VagrantPlugins::HostWindows::Cap::ConfiguredIPAddresses }
+  let(:result){ Vagrant::Util::Subprocess::Result }
+  let(:addresses){ [] }
+  let(:execute_result){ result.new(0, {ip_addresses: addresses}.to_json, "") }
+
+  before{ allow(Vagrant::Util::PowerShell).to receive(:execute).
+      and_return(execute_result) }
+
+  it "should return an array" do
+    expect(subject.configured_ip_addresses(nil)).to be_kind_of(Array)
+  end
+
+  context "with single address returned" do
+    let(:addresses){ "ADDRESS" }
+
+    it "should return an array" do
+      expect(subject.configured_ip_addresses(nil)).to eq([addresses])
+    end
+  end
+
+  context "with multiple addresses returned" do
+    let(:addresses){ ["ADDRESS1", "ADDRESS2"] }
+
+    it "should return an array" do
+      expect(subject.configured_ip_addresses(nil)).to eq(addresses)
+    end
+  end
+
+  context "with failed script execution" do
+    let(:execute_result){ result.new(1, "", "") }
+
+    it "should raise error" do
+      expect{ subject.configured_ip_addresses(nil) }.to raise_error(
+        Vagrant::Errors::PowerShellError)
+    end
+  end
+end