describe JSON::Matchers, "#match_response_schema" do
  it "fails with an invalid JSON body" do
    create_schema("foo", "")

    expect {
      expect(response_for("")).to match_response_schema("foo")
    }.to raise_error(JSON::Matchers::InvalidSchemaError)
  end

  it "does not fail with an empty JSON body" do
    create_schema("foo", {})

    expect(response_for({})).to match_response_schema("foo")
  end

  it "fails when the body is missing a required property" do
    create_schema("foo_schema", {
      type: "object",
      required: ["foo"],
    })

    expect(response_for({})).not_to match_response_schema("foo_schema")
  end

  it "fails when the body contains a property with the wrong type" do
    create_schema("foo_schema", {
      type: "object",
      properties: {
        foo: { type: "string" }
      }
    })

    expect(response_for({foo: 1})).not_to match_response_schema("foo_schema")
  end

  it "contains the body in the failure message" do
    create_schema("foo", { type: "array" })

    expect {
      expect(response_for(bar: 5)).to match_response_schema("foo")
    }.to raise_error(/{"bar":5}/)
  end

  it "contains the body in the failure message when negated" do
    create_schema("foo", { type: "array" })

    expect {
      expect(response_for([])).not_to match_response_schema("foo")
    }.to raise_error(/\[\]/)
  end

  it "contains the schema in the failure message" do
    schema = { type: "array" }
    create_schema("foo", schema)

    expect {
      expect(response_for(bar: 5)).to match_response_schema("foo")
    }.to raise_error(/#{schema.to_json}/)
  end

  it "contains the schema in the failure message when negated" do
    schema = { type: "array" }
    create_schema("foo", schema)

    expect {
      expect(response_for([])).not_to match_response_schema("foo")
    }.to raise_error(/#{schema.to_json}/)
  end

  it "does not fail when the schema matches" do
    create_schema("array_schema", {
      type: "array",
      items: { type: "string" }
    })

    expect(response_for(["valid"])).to match_response_schema("array_schema")
  end

  it "supports $ref" do
    create_schema("single", {
      "type" => "object",
      "required" => ["foo"],
      "properties" => {
        "foo" => { "type" => "string" }
      }
    })
    create_schema("collection", {
      "type" => "array",
      "items" => { "$ref" => "single.json" }
    })

    valid_response = response_for([{foo: "is a string"}])
    invalid_response = response_for([{foo: 0}])

    expect(valid_response).to match_response_schema("collection")
    expect(invalid_response).not_to match_response_schema("collection")
  end
end