36 lines
1.3 KiB
Ruby
36 lines
1.3 KiB
Ruby
require "rails_helper"
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RSpec.describe FunctionCaller, type: :labor do
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let(:payload) { { user_id: 1, name: "hello" } }
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let(:dummy_client) { double }
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let(:result_struct) { Struct.new(:payload, keyword_init: true) }
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let(:result) { result_struct.new(payload: [{ body: { message: "hi" }.to_json }.to_json]) }
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before do
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allow(dummy_client).to receive(:invoke).and_return(result)
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end
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it "calls the aws_lambda_client" do
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described_class.call("some_function", payload, dummy_client)
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expect(dummy_client).to have_received(:invoke).with(function_name: "some_function", payload: payload)
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end
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it "returns parsed value" do
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value = described_class.call("some_function", payload, dummy_client)
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expect(value).to eq("hi")
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end
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it "doesn't fail when payload is empty" do
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empty_result = result_struct.new(payload: [nil])
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empty_client = double
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allow(empty_client).to receive(:invoke).and_return(empty_result)
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expect(described_class.call("some_function", payload, empty_client)).to be_nil
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end
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it "doesn't fail when payload is empty and is a hash" do
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empty_result = result_struct.new(payload: [{}.to_json])
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empty_client = double
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allow(empty_client).to receive(:invoke).and_return(empty_result)
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expect(described_class.call("some_function", payload, empty_client)).to be_nil
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end
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end
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