test(client): unit test for prisma#12651

packages/client/src/__tests__/query/floats.test.ts

@@ -0,0 +1,82 @@
+import { getDMMF } from '../../generation/getDMMF'
+import { DMMFClass, makeDocument, transformDocument } from '../../runtime'
+
+const datamodel = /* Prisma */ `
+    datasource my_db {
+        provider = "postgres"
+        url      = env("POSTGRES_URL")
+    }
+
+    model Floats {
+        id       Int    @id
+        value    Float
+    }
+`
+
+let dmmf
+
+function getTransformedDocument(select) {
+  const document = makeDocument({
+    dmmf,
+    select,
+    rootTypeName: 'mutation',
+    rootField: 'createOneFloats',
+  })
+  return String(transformDocument(document))
+}
+
+beforeAll(async () => {
+  dmmf = new DMMFClass(await getDMMF({ datamodel }))
+})
+
+test('serializes floats in exponential notation', () => {
+  const largeInt = getTransformedDocument({
+    data: {
+      value: 100_000_000_000_000_000_000,
+    },
+  })
+
+  expect(largeInt).toMatchInlineSnapshot(`
+    mutation {
+      createOneFloats(data: {
+        value: 1e+20
+      }) {
+        id
+        value
+      }
+    }
+  `)
+
+  const negativeInt = getTransformedDocument({
+    data: {
+      value: Number.MIN_SAFE_INTEGER,
+    },
+  })
+
+  expect(negativeInt).toMatchInlineSnapshot(`
+    mutation {
+      createOneFloats(data: {
+        value: -9.007199254740991e+15
+      }) {
+        id
+        value
+      }
+    }
+  `)
+
+  const otherFloat = getTransformedDocument({
+    data: {
+      value: 13.37,
+    },
+  })
+  expect(otherFloat).toMatchInlineSnapshot(`
+    mutation {
+      createOneFloats(data: {
+        value: 1.337e+1
+      }) {
+        id
+        value
+      }
+    }
+  `)
+})