test: Add first ability test

tests/resolvers/__snapshots__/ABILITY_BY_ID.ts

@@ -0,0 +1,35 @@
+const result = () => {
+    return `
+    Object {
+      "data": Object {
+        "abilityById": Object {
+          "abilityDescription": "Fills a zone with powerful healing roots. Allies over it heal over 4 seconds. Each upgrade level increases HP healed",
+          "abilityId": 85,
+          "abilityName": "Healing Roots",
+          "kingdom": "KRV",
+          "levelCosts": Array [
+            130,
+            130,
+            130,
+          ],
+          "numberOfLevels": 3,
+          "totalAbilityCost": 390,
+          "totalCostWithTowers": 1290,
+          "towerId": 104,
+          "towerImageUrl": "https://storage.googleapis.com/kingdom-rush-towers.appspot.com/krv-shaman4.png",
+          "towerName": "orc shaman, 4",
+          "towerType": "MAGE",
+        },
+      },
+      "errors": undefined,
+      "extensions": undefined,
+      "http": Object {
+        "headers": Headers {
+          Symbol(map): Object {},
+        },
+      },
+    }
+`
+}
+
+export default result

tests/resolvers/ability.test.ts

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+import { createConnection, getConnection } from "typeorm"
+import { buildSchema } from "type-graphql"
+import { AbilityResolver } from "../../src/resolvers/AbilityResolver"
+import { ApolloServer, gql } from "apollo-server"
+import { createTestClient } from "apollo-server-testing"
+import ABILITY_BY_ID_RESULT from "./__snapshots__/ABILITY_BY_ID"
+import { DocumentNode } from "graphql"
+
+beforeAll(async () => {
+    await createConnection("test")
+})
+
+afterAll(async () => {
+    await getConnection("test").close()
+})
+
+const executeTest = async (testQuery: DocumentNode, correctAnswer: string) => {
+    const schema = await buildSchema({ resolvers: [AbilityResolver] })
+    const { query } = createTestClient(new ApolloServer({ schema }))
+
+    const result = await query({ query: testQuery })
+    expect(result).toMatchInlineSnapshot(correctAnswer)
+}
+
+test("1. Be able to get ability data by its id", async () => {
+    const testQuery = gql`
+        {
+            abilityById(id: 85) {
+                abilityDescription
+                abilityId
+                abilityName
+                kingdom
+                levelCosts
+                numberOfLevels
+                totalAbilityCost
+                totalCostWithTowers
+                towerId
+                towerImageUrl
+                towerName
+                towerType
+            }
+        }
+    `
+    await executeTest(testQuery, ABILITY_BY_ID_RESULT())
+})