init

Signed-off-by: T-Hax <>

lib/v3-core/test/shared/checkObservationEquals.ts

@@ -0,0 +1,38 @@
+import { BigNumber, BigNumberish } from 'ethers'
+import { expect } from './expect'
+
+// helper function because we cannot do a simple deep equals with the
+// observation result object returned from ethers because it extends array
+export default function checkObservationEquals(
+  {
+    tickCumulative,
+    blockTimestamp,
+    initialized,
+    secondsPerLiquidityCumulativeX128,
+  }: {
+    tickCumulative: BigNumber
+    secondsPerLiquidityCumulativeX128: BigNumber
+    initialized: boolean
+    blockTimestamp: number
+  },
+  expected: {
+    tickCumulative: BigNumberish
+    secondsPerLiquidityCumulativeX128: BigNumberish
+    initialized: boolean
+    blockTimestamp: number
+  }
+) {
+  expect(
+    {
+      initialized,
+      blockTimestamp,
+      tickCumulative: tickCumulative.toString(),
+      secondsPerLiquidityCumulativeX128: secondsPerLiquidityCumulativeX128.toString(),
+    },
+    `observation is equivalent`
+  ).to.deep.eq({
+    ...expected,
+    tickCumulative: expected.tickCumulative.toString(),
+    secondsPerLiquidityCumulativeX128: expected.secondsPerLiquidityCumulativeX128.toString(),
+  })
+}