Added and completed all of the test functions for data-and-functions …

data-and-functions-1/src/functions/getActiveUsers.js

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+const getActiveUsers = (data) => {
+  if (data == null || data.users == null) {
+    return null
+  } else {
+    const activeUsers = []
+    data.users.forEach((u) => {
+      if (u.accountActive === true) {
+        activeUsers.push(u)
+      }
+    })
+    return activeUsers
+  }
+}
+
+export default getActiveUsers

data-and-functions-1/src/functions/getMostExpensiveProduct.js

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+const getMostExpensiveProduct = (data) => {
+  if (data == null || data.products == null) {
+    return null
+  } else {
+    let mostExpensive = data.products[0]
+    data.products.forEach((p) => {
+      if (mostExpensive.price < p.price) {
+        mostExpensive = p
+      }
+    })
+    return mostExpensive
+  }
+}
+
+export default getMostExpensiveProduct

data-and-functions-1/src/functions/getOrderInfo.js

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+import getProductById from './getProductById'
+import getUserById from './getUserById'
+
+const getOrderInfo = (data) => {
+  if (data == null || data.orders == null) {
+    return null
+  } else {
+    const orders = []
+    data.orders.forEach((o) => {
+      orders.push({
+        orderId: o.id,
+        price: getProductById(data, o.productId).price,
+        userName: getUserById(data, o.userId).name
+      })
+    })
+    return orders
+  }
+}
+
+export default getOrderInfo

data-and-functions-1/src/functions/getProductById.js

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+const getProductById = (data, id) => {
+  if (data == null || data.products == null || id == null) {
+    return null
+  } else {
+    return data.products.find((p) => {
+      return p.id === id
+    })
+  }
+}
+
+export default getProductById

data-and-functions-1/src/functions/getUserById.js

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+const getUserById = (data, id) => {
+  if (data == null || id == null || data.users == null) {
+    return null
+  } else {
+    return data.users.find((u) => u.id === id)
+  }
+}
+
+export default getUserById

data-and-functions-2/src/functions/getProductById.js

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+const getProductById = (data, id) => {
+  if (data == null || data.products == null || id == null) {
+    return null
+  } else {
+    return data.products.find((p) => {
+      return p.id === id
+    })
+  }
+}
+
+export default getProductById

data-and-functions-2/src/functions/getProductsForOrder.js

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+import getProductById from './getProductById'
+
+const getProductsForOrder = (data, id) => {
+  if (data == null || id == null || data.orders == null) {
+    throw new Error('Missing data or ID')
+  }
+  const order = data.orders.find((o) => o.id === id)
+  if (order === undefined) {
+    return null
+  }
+  const productArray = []
+  order.products.forEach((p) => {
+    productArray.push(getProductById(data, p))
+  })
+  return productArray
+}
+
+export default getProductsForOrder

data-and-functions-2/src/functions/getTotalPriceForOrder.js

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+import getProductById from './getProductById'
+
+const getTotalPriceForOrder = (data, id) => {
+  if (data == null || id == null || data.orders == null) {
+    throw new Error('Missing data, id, or orders.')
+  }
+  const order = data.orders.find((o) => o.id === id)
+  if (order === undefined) {
+    return null
+  }
+  let totalPrice = 0
+  order.products.forEach((p) => {
+    totalPrice += getProductById(data, p).price
+  })
+  return totalPrice
+}
+
+export default getTotalPriceForOrder