Add initial gnucash importing test

This is woefully incomplete, but tests to make sure at least one balance
on one account is correct...

internal/handlers/gnucash_test.go

@@ -0,0 +1,103 @@
+package handlers_test
+
+import (
+	"bytes"
+	"github.com/aclindsa/moneygo/internal/handlers"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"os"
+	"testing"
+)
+
+func importGnucash(client *http.Client, filename string) error {
+	var buf bytes.Buffer
+	mw := multipart.NewWriter(&buf)
+
+	file, err := os.Open(filename)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	filewriter, err := mw.CreateFormFile("gnucash", filename)
+	if err != nil {
+		return err
+	}
+	if _, err := io.Copy(filewriter, file); err != nil {
+		return err
+	}
+
+	mw.Close()
+
+	response, err := client.Post(server.URL+"/v1/imports/gnucash", mw.FormDataContentType(), &buf)
+	if err != nil {
+		return err
+	}
+
+	body, err := ioutil.ReadAll(response.Body)
+	response.Body.Close()
+	if err != nil {
+		return err
+	}
+
+	var e handlers.Error
+	err = (&e).Read(string(body))
+	if err != nil {
+		return err
+	}
+	if e.ErrorId != 0 || len(e.ErrorString) != 0 {
+		return &e
+	}
+
+	return nil
+}
+
+func TestImportGnucash(t *testing.T) {
+	RunWith(t, &data[0], func(t *testing.T, d *TestData) {
+		// Ensure there's only one USD currency
+		oldDefault, err := getSecurity(d.clients[0], d.users[0].DefaultCurrency)
+		if err != nil {
+			t.Fatalf("Error fetching default security: %s\n", err)
+		}
+		d.users[0].DefaultCurrency = d.securities[0].SecurityId
+		if _, err := updateUser(d.clients[0], &d.users[0]); err != nil {
+			t.Fatalf("Error updating user: %s\n", err)
+		}
+		if err := deleteSecurity(d.clients[0], oldDefault); err != nil {
+			t.Fatalf("Error removing default security: %s\n", err)
+		}
+
+		// Import and ensure it didn't return a nasty error code
+		if err = importGnucash(d.clients[0], "handlers_testdata/example.gnucash"); err != nil {
+			t.Fatalf("Error importing from Gnucash: %s\n", err)
+		}
+
+		// Next, find the Expenses/Groceries account
+		var groceries *handlers.Account
+		accounts, err := getAccounts(d.clients[0])
+		if err != nil {
+			t.Fatalf("Error fetching accounts: %s\n", err)
+		}
+		for _, account := range *accounts.Accounts {
+			if account.Name == "Groceries" {
+				groceries = &account
+				break
+			}
+		}
+		if groceries == nil {
+			t.Fatalf("Couldn't find 'Expenses/Groceries' account")
+		}
+
+		grocerytransactions, err := getAccountTransactions(d.clients[0], groceries.AccountId, 0, 0, "")
+		if err != nil {
+			t.Fatalf("Couldn't fetch account transactions for 'Expenses/Groceries': %s\n", err)
+		}
+
+		// 87.19 from preexisting transactions and 200.37 from Gnucash
+		if grocerytransactions.EndingBalance != "287.56" {
+			t.Errorf("Expected ending balance for 'Expenses/Groceries' to be '287.56', but found %s\n", grocerytransactions.EndingBalance)
+		}
+	})
+}