Add unit test for action

Author: Rynaard Burger

spec/bundletool_generate_universal_signed_apk_spec.rb

@@ -0,0 +1,22 @@
+require 'spec_helper'
+
+describe Fastlane::Actions::BundletoolGenerateUniversalSignedApkAction do
+  let(:aab_path) { 'path/to/app.aab' }
+  let(:apk_output_path) { 'path/to/output' }
+  let(:keystore_path) { 'path/to/keystore' }
+  let(:keystore_password) { 'keystore_password' }
+  let(:keystore_key_alias) { 'keystore_key_alias' }
+  let(:signing_key_password) { 'signing_key_password' }
+
+  it 'calls `bundletool` with the correct arguments' do
+    cmd = run_described_fastlane_action(
+      aab_path: aab_path,
+      apk_output_path: apk_output_path,
+      keystore_path: keystore_path,
+      keystore_password: keystore_password,
+      keystore_key_alias: keystore_key_alias,
+      signing_key_password: signing_key_password
+    )
+    expect(cmd).to eq("bundletool build-apks --mode universal --bundle #{aab_path} --output-format DIRECTORY --output #{apk_output_path} --ks #{keystore_path} --ks-pass #{keystore_password} --ks-key-alias #{keystore_key_alias} --key-pass #{signing_key_password}")
+  end
+end