1 files changed, 61 insertions, 0 deletions
diff --git a/spec/model_info_spec.rb b/spec/model_info_spec.rb
new file mode 100644
index 0000000..25930f4
--- /dev/null
+++ b/spec/model_info_spec.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Dispatch::Adapter::ModelInfo do
+  let(:base_kwargs) do
+    {
+      id: "gpt-4",
+      name: "GPT-4",
+      max_context_tokens: 8192,
+      supports_vision: false,
+      supports_tool_use: true,
+      supports_streaming: true
+    }
+  end
+
+  it "still works without pricing (existing shape unchanged)" do
+    info = described_class.new(**base_kwargs)
+    expect(info.id).to eq("gpt-4")
+    expect(info.name).to eq("GPT-4")
+    expect(info.max_context_tokens).to eq(8192)
+    expect(info.supports_vision).to be(false)
+    expect(info.supports_tool_use).to be(true)
+    expect(info.supports_streaming).to be(true)
+    expect(info.premium_request_multiplier).to be_nil
+    expect(info.pricing).to be_nil
+  end
+
+  it "accepts a ModelPricing and exposes it on #pricing" do
+    pricing = Dispatch::Adapter::ModelPricing.new(input_per_mtok: 3.0, output_per_mtok: 15.0)
+    info = described_class.new(**base_kwargs, pricing: pricing)
+    expect(info.pricing).to be_a(Dispatch::Adapter::ModelPricing)
+    expect(info.pricing.input_per_mtok).to eq(3.0)
+    expect(info.pricing.output_per_mtok).to eq(15.0)
+  end
+end
+
+RSpec.describe Dispatch::Adapter::ModelPricing do
+  it "requires input_per_mtok and output_per_mtok" do
+    pricing = described_class.new(input_per_mtok: 3.0, output_per_mtok: 15.0)
+    expect(pricing.input_per_mtok).to eq(3.0)
+    expect(pricing.output_per_mtok).to eq(15.0)
+  end
+
+  it "defaults cache_read_per_mtok and cache_write_per_mtok to 0.0" do
+    pricing = described_class.new(input_per_mtok: 1.0, output_per_mtok: 2.0)
+    expect(pricing.cache_read_per_mtok).to eq(0.0)
+    expect(pricing.cache_write_per_mtok).to eq(0.0)
+  end
+
+  it "accepts explicit cache pricing" do
+    pricing = described_class.new(
+      input_per_mtok: 3.0,
+      output_per_mtok: 15.0,
+      cache_read_per_mtok: 0.3,
+      cache_write_per_mtok: 3.75
+    )
+    expect(pricing.cache_read_per_mtok).to eq(0.3)
+    expect(pricing.cache_write_per_mtok).to eq(3.75)
+  end
+end