add back elixir petstore test-related files

samples/client/petstore/elixir/.openapi-generator/FILES

@@ -1,6 +1,5 @@
 .formatter.exs
 .gitignore
-.openapi-generator-ignore
 README.md
 config/config.exs
 config/runtime.exs

samples/client/petstore/elixir/pom.xml

@@ -0,0 +1,75 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>io.swagger</groupId>
+    <artifactId>ElixirPetstoreClientTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>Elixir Petstore Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>dep-install</id>
+                        <phase>pre-integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>mix</executable>
+                            <arguments>
+                                <argument>local.hex</argument>
+                                <argument>--force</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>compile</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>mix</executable>
+                            <arguments>
+                                <argument>do</argument>
+                                <argument>deps.get,</argument>
+                                <argument>compile</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>test</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>mix</executable>
+                            <arguments>
+                                <argument>test</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

samples/client/petstore/elixir/test/pet_test.exs

@@ -0,0 +1,60 @@
+defmodule PetTest do
+    use ExUnit.Case
+    alias OpenapiPetstore.Connection
+    alias OpenapiPetstore.Api.Pet, as: PetApi
+    alias OpenapiPetstore.Model.Pet
+    alias OpenapiPetstore.Model.Category
+    alias OpenapiPetstore.Model.Tag
+
+    test "add and delete a pet" do
+        petId = 10007
+        pet = %Pet{
+            :id => petId,
+            :name => "elixir client test",
+            :photoUrls => ["http://test_elixir_unit_test.com"],
+            :category => %Category{:id => petId, :name=> "test elixir category"},
+            :tags => [%Tag{:id => petId, :name => "test elixir tag"}],
+        }
+        {:ok, response} = PetApi.add_pet(Connection.new, pet)
+        assert response.status == 200
+
+        {:ok, pet} = PetApi.get_pet_by_id(Connection.new, petId)
+        assert pet.id == petId
+        assert pet.name == "elixir client test"
+        assert List.first(pet.photoUrls) == "http://test_elixir_unit_test.com"
+        assert pet.category.id == petId
+        assert pet.category.name == "test elixir category"
+        assert List.first(pet.tags) == %Tag{:id => petId, :name => "test elixir tag"}
+
+        {:ok, response} = PetApi.delete_pet(Connection.new, petId)
+        assert response.status == 200
+        {:ok, response} = PetApi.get_pet_by_id(Connection.new, petId)
+        assert response.status == 404
+    end
+
+    test "update a pet" do
+        petId = 10007
+        pet = %Pet{
+            :id => petId,
+            :name => "elixir client updatePet",
+            :status => "pending",
+            :photoUrls => ["http://test_elixir_unit_test.com"]
+        }
+        {:ok, response} = PetApi.update_pet(Connection.new, pet)
+        assert response.status == 200
+
+        {:ok, pet} = PetApi.get_pet_by_id(Connection.new, petId)
+        assert pet.id == petId
+        assert pet.name == "elixir client updatePet"
+        assert pet.status == "pending"
+    end
+
+    test "find pet by status" do
+        {:ok, listPets} = PetApi.find_pets_by_status(Connection.new, "available")
+        assert List.first(listPets) != nil
+
+        {:ok, listPets} = PetApi.find_pets_by_status(Connection.new, "unknown_and_incorrect_status")
+        assert List.first(listPets) == nil
+    end
+
+end