chore: import upstream snapshot with attribution

tests/minimax.test.ts

@@ -0,0 +1,59 @@
+import { describe, it, expect } from 'vitest'
+
+import { getModelCosts, getShortModelName } from '../src/models.js'
+
+// Verifies MiniMax pricing loaded from FALLBACK_PRICING (no network call).
+// pricingCache stays null until loadPricing() runs, so getModelCosts falls
+// through to FALLBACK_PRICING which is what we want to validate here.
+
+describe('MiniMax model pricing', () => {
+  it('returns pricing for MiniMax-M2.7', () => {
+    const costs = getModelCosts('MiniMax-M2.7')
+    expect(costs).not.toBeNull()
+    expect(costs!.inputCostPerToken).toBe(0.3e-6)
+    expect(costs!.outputCostPerToken).toBe(1.2e-6)
+    expect(costs!.cacheReadCostPerToken).toBe(0.06e-6)
+    expect(costs!.cacheWriteCostPerToken).toBe(0.375e-6)
+    expect(costs!.fastMultiplier).toBe(1)
+  })
+
+  it('returns pricing for MiniMax-M2.7-highspeed', () => {
+    const costs = getModelCosts('MiniMax-M2.7-highspeed')
+    expect(costs).not.toBeNull()
+    expect(costs!.inputCostPerToken).toBe(0.6e-6)
+    expect(costs!.outputCostPerToken).toBe(2.4e-6)
+    expect(costs!.cacheReadCostPerToken).toBe(0.06e-6)
+    expect(costs!.cacheWriteCostPerToken).toBe(0.375e-6)
+    expect(costs!.fastMultiplier).toBe(1)
+  })
+
+  it('returns official pricing for MiniMax-M3', () => {
+    // MiniMax moved M3 to tiered pricing (platform.minimax.io pay-as-you-go):
+    // $0.3/$1.2 per M is the official standard tier (inputs up to 512K), with
+    // $0.6/$2.4 above 512K. The snapshot carries the standard tier, matching
+    // how other tiered models are priced here.
+    const costs = getModelCosts('MiniMax-M3')
+    expect(costs).not.toBeNull()
+    expect(costs!.inputCostPerToken).toBe(0.3e-6)
+    expect(costs!.outputCostPerToken).toBe(1.2e-6)
+  })
+
+  it('highspeed pricing is distinct from base model pricing', () => {
+    const base = getModelCosts('MiniMax-M2.7')
+    const fast = getModelCosts('MiniMax-M2.7-highspeed')
+    expect(fast!.inputCostPerToken).toBeGreaterThan(base!.inputCostPerToken)
+    expect(fast!.outputCostPerToken).toBeGreaterThan(base!.outputCostPerToken)
+  })
+
+  it('returns short name for MiniMax-M2.7', () => {
+    expect(getShortModelName('MiniMax-M2.7')).toBe('MiniMax M2.7')
+  })
+
+  it('returns short name for MiniMax-M2.7-highspeed', () => {
+    expect(getShortModelName('MiniMax-M2.7-highspeed')).toBe('MiniMax M2.7 Highspeed')
+  })
+
+  it('handles MiniMax model ID with date suffix', () => {
+    expect(getShortModelName('MiniMax-M2.7-20260101')).toBe('MiniMax M2.7')
+  })
+})