Vinai/elixir smoke test (#1815)

Elixir integration

integration-tests/MySQLDockerfile

@@ -86,6 +86,13 @@ WORKDIR /mysql-client-tests/ruby
 RUN gem install bundler -v 2.1.4
 RUN bundle install
 
+# install elixir
+RUN apt-get install wget
+RUN wget https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb && dpkg -i erlang-solutions_2.0_all.deb
+RUN apt-get update && apt-get -y upgrade
+RUN apt-get install -y esl-erlang
+RUN apt-get install -y elixir
+
 # install dolt from source
 WORKDIR /root/building
 COPY ./go .

integration-tests/mysql-client-tests/elixir/lib/simple.ex

@@ -0,0 +1,33 @@
+defmodule SmokeTest do
+  def myTestFunc(arg1, arg2) do
+    if arg1 != arg2 do
+      raise "Test error"
+    end
+  end
+
+  @spec run :: nil
+  def run do
+    args = System.argv()
+    user = Enum.at(args, 0)
+    {port, _} = Integer.parse(Enum.at(args, 1))
+    database = Enum.at(args, 2)
+
+    {:ok, pid} = MyXQL.start_link(username: user, port: port, database: database)
+    {:ok, _} = MyXQL.query(pid, "drop table if exists test")
+    {:ok, _} = MyXQL.query(pid, "create table test (pk int, `value` int, primary key(pk))")
+    {:ok, _} = MyXQL.query(pid, "describe test")
+
+    {:ok, result} = MyXQL.query(pid, "select * from test")
+    myTestFunc(result.num_rows, 0)
+
+    {:ok, _} = MyXQL.query(pid, "insert into test (pk, `value`) values (0,0)")
+
+    # MyXQL uses the CLIENT_FOUND_ROWS flag so we should return the number of rows matched
+    {:ok, result} = MyXQL.query(pid, "UPDATE test SET pk = pk where pk = 0")
+    myTestFunc(result.num_rows, 1)
+
+    {:ok, result} = MyXQL.query(pid, "SELECT * FROM test")
+    myTestFunc(result.num_rows, 1)
+    myTestFunc(result.rows, [[0,0]])
+  end
+end

integration-tests/mysql-client-tests/elixir/mix.exs

@@ -0,0 +1,19 @@
+defmodule Simple.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :simple,
+      version: "0.1.0",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      {:myxql, "~> 0.5.0"},
+    ]
+  end
+end

integration-tests/mysql-client-tests/mysql-client-tests.bats

@@ -100,6 +100,17 @@ cmake ..
     ruby $BATS_TEST_DIRNAME/ruby/ruby-mysql-test.rb $USER $PORT $REPO_NAME
 }
 
+@test "elixir myxql test" {
+    cd $BATS_TEST_DIRNAME/elixir/
+    # install some mix dependencies
+    mix local.hex --force
+    mix local.rebar --force
+    mix deps.get
+
+    # run the test
+    mix run -e "IO.puts(SmokeTest.run())" $USER $PORT $REPO_NAME
+}
+
 @test "mysqldump works" {
     mysqldump $REPO_NAME -P $PORT -h 0.0.0.0 -u $USER
 }