Add heroku config

plugins/pushes/heroku/config.rb

@@ -0,0 +1,86 @@
+module VagrantPlugins
+  module HerokuPush
+    class Config < Vagrant.plugin("2", :config)
+      # The name of the Heroku application to push to.
+      # @return [String]
+      attr_accessor :app
+
+      # The base directory with file contents to upload. By default this
+      # is the same directory as the Vagrantfile, but you can specify this
+      # if you have a `src` folder or `bin` folder or some other folder
+      # you want to upload. This directory must be a git repository.
+      # @return [String]
+      attr_accessor :dir
+
+      # The path to the git binary to shell out to. This usually is only set for
+      # debugging/development. If not set, the git bin will be searched for
+      # in the PATH.
+      # @return [String]
+      attr_accessor :git_bin
+
+      # The Git remote to push to (default: "heroku").
+      # @return [String]
+      attr_accessor :remote
+
+      # The Git branch to push to (default: "master").
+      # @return [String]
+      attr_accessor :branch
+
+      def initialize
+        @app = UNSET_VALUE
+        @dir = UNSET_VALUE
+
+        @git_bin = UNSET_VALUE
+        @remote = UNSET_VALUE
+        @branch = UNSET_VALUE
+      end
+
+      def finalize!
+        @app = nil if @app == UNSET_VALUE
+        @dir = "." if @dir == UNSET_VALUE
+
+        @git_bin = "git" if @git_bin == UNSET_VALUE
+        @remote = "heroku" if @remote == UNSET_VALUE
+        @branch = "master" if @branch == UNSET_VALUE
+      end
+
+      def validate(machine)
+        errors = _detected_errors
+
+        if missing?(@dir)
+          errors << I18n.t("heroku_push.errors.missing_attribute",
+            attribute: "dir",
+          )
+        end
+
+        if missing?(@git_bin)
+          errors << I18n.t("heroku_push.errors.missing_attribute",
+            attribute: "git_bin",
+          )
+        end
+
+        if missing?(@remote)
+          errors << I18n.t("heroku_push.errors.missing_attribute",
+            attribute: "remote",
+          )
+        end
+
+        if missing?(@branch)
+          errors << I18n.t("heroku_push.errors.missing_attribute",
+            attribute: "branch",
+          )
+        end
+
+        { "Heroku push" => errors }
+      end
+
+      private
+
+      # Determine if the given string is "missing" (blank)
+      # @return [true, false]
+      def missing?(obj)
+        obj.to_s.strip.empty?
+      end
+    end
+  end
+end

plugins/pushes/heroku/locales/en.yml

@@ -0,0 +1,30 @@
+en:
+  heroku_push:
+    errors:
+      command_failed: |-
+        The following command exited with a non-zero exit status:
+
+            %{cmd}
+
+        stdout: %{stdout}
+        stderr: %{stderr}
+      git_not_found: |-
+        The Git binary '%{bin}' could not be found. Please ensure you
+        have downloaded and installed the latest version of Git:
+
+            http://git-scm.com/downloads
+      missing_attribute: |-
+        Missing required attribute '%{attribute}'. The Vagrant Heroku Push
+        plugin requires you set this attribute. Please set this attribute in
+        your Vagrantfile, for example:
+
+            config.push.define "heroku" do |push|
+              push.%{attribute} = "..."
+            end
+      not_a_git_repo: |-
+        The following path is not a valid Git repository:
+
+            %{path}
+
+        Please ensure you are working in the correct directory. In order to use
+        the Vagrant Heroku Push plugin, you must have a git repository.

test/unit/plugins/pushes/heroku/config_test.rb

@@ -0,0 +1,117 @@
+require_relative "../../../base"
+
+require Vagrant.source_root.join("plugins/pushes/heroku/config")
+
+describe VagrantPlugins::HerokuPush::Config do
+  include_context "unit"
+
+  before(:all) do
+    I18n.load_path << Vagrant.source_root.join("plugins/pushes/heroku/locales/en.yml")
+    I18n.reload!
+  end
+
+  subject { described_class.new }
+
+  let(:machine) { double("machine") }
+
+  describe "#app" do
+    it "defaults to nil" do
+      subject.finalize!
+      expect(subject.app).to be(nil)
+    end
+  end
+
+  describe "#dir" do
+    it "defaults to ." do
+      subject.finalize!
+      expect(subject.dir).to eq(".")
+    end
+  end
+
+  describe "#git_bin" do
+    it "defaults to git" do
+      subject.finalize!
+      expect(subject.git_bin).to eq("git")
+    end
+  end
+
+  describe "#remote" do
+    it "defaults to git" do
+      subject.finalize!
+      expect(subject.remote).to eq("heroku")
+    end
+  end
+
+  describe "#branch" do
+    it "defaults to git" do
+      subject.finalize!
+      expect(subject.branch).to eq("master")
+    end
+  end
+
+  describe "#validate" do
+    before do
+      allow(machine).to receive(:env)
+        .and_return(double("env",
+          root_path: "",
+        ))
+
+      subject.app = "bacon"
+      subject.dir = "."
+      subject.git_bin = "git"
+      subject.remote = "heroku"
+      subject.branch = "master"
+    end
+
+    let(:result) { subject.validate(machine) }
+    let(:errors) { result["Heroku push"] }
+
+    context "when the app is missing" do
+      it "does not return an error" do
+        subject.app = ""
+        subject.finalize!
+        expect(errors).to be_empty
+      end
+    end
+
+    context "when the git_bin is missing" do
+      it "returns an error" do
+        subject.git_bin = ""
+        subject.finalize!
+        expect(errors).to include(I18n.t("heroku_push.errors.missing_attribute",
+          attribute: "git_bin",
+        ))
+      end
+    end
+
+    context "when the remote is missing" do
+      it "returns an error" do
+        subject.remote = ""
+        subject.finalize!
+        expect(errors).to include(I18n.t("heroku_push.errors.missing_attribute",
+          attribute: "remote",
+        ))
+      end
+    end
+
+    context "when the branch is missing" do
+      it "returns an error" do
+        subject.branch = ""
+        subject.finalize!
+        expect(errors).to include(I18n.t("heroku_push.errors.missing_attribute",
+          attribute: "branch",
+        ))
+      end
+    end
+
+    context "when the dir is missing" do
+      it "returns an error" do
+        subject.dir = ""
+        subject.finalize!
+        expect(errors).to include(I18n.t("heroku_push.errors.missing_attribute",
+          attribute: "dir",
+        ))
+      end
+    end
+  end
+end