testdata for IDEA-132253

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA132253.java

@@ -0,0 +1,155 @@
+package system;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collector;
+
+import static java.math.BigDecimal.ZERO;
+import static java.util.stream.Collectors.*;
+
+class Reporter {
+
+  private Database database;
+
+  public Reporter(Database database) {
+    this.database = database;
+  }
+
+  public Map<Shop, Map<Week, Statistics>> createReport() {
+    return database.getInvoices().stream().collect(
+      groupingBy(i -> i.shop,
+                 groupingBy(i -> Week.of(i.date),
+                            Collector.of(Statistics::new, Statistics::addInvoice, Statistics::combine))));
+  }
+
+  public static class Statistics {
+
+    public BigDecimal total = ZERO;
+    public int invoiceCount, itemCount;
+
+    Statistics addInvoice(Invoice invoice) {
+      invoiceCount++;
+      itemCount += invoice.rows.stream().mapToInt(r -> r.quantity).sum();
+      total = total.add(invoice.rows.stream().map(row -> row.unitPrice.multiply(new BigDecimal(row.quantity))).reduce(ZERO, BigDecimal::add));
+      return this;
+    }
+
+    static Statistics combine(Statistics s1, Statistics s2) {
+      return null; // need to implement for parallel calculation
+    }
+
+    @Override
+    public String toString() {
+      return "{" +
+             "total=" + total +
+             ", invoices=" + invoiceCount +
+             ", items=" + itemCount +
+             '}';
+    }
+  }
+
+  public static class Week implements Comparable<Week> {
+
+    public LocalDate firstDate;
+
+    public Week(LocalDate firstDate) {
+      this.firstDate = firstDate;
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (this == that) return true;
+      if (that == null || getClass() != that.getClass()) return false;
+      Week week = (Week) that;
+      return firstDate.equals(week.firstDate);
+    }
+
+    @Override
+    public int hashCode() {
+      return firstDate.hashCode();
+    }
+
+    @Override
+    public int compareTo(Week that) {
+      return 1;
+    }
+
+    @Override
+    public String toString() {
+      return firstDate.toString();
+    }
+
+    public static Week of(LocalDate date) {
+      return null;
+    }
+  }
+
+  public static class Database {
+
+    private List<Invoice> invoices;
+
+    void setInvoices(List<Invoice> invoices) {
+      this.invoices = invoices;
+    }
+
+    public List<Invoice> getInvoices() {
+      return Collections.unmodifiableList(invoices);
+    }
+  }
+
+  public static class Invoice {
+
+    public Shop shop;
+    public LocalDate date;
+    public List<InvoiceRow> rows = new ArrayList<>();
+
+    public Invoice(Shop shop, LocalDate date) {
+      this.shop = shop;
+      this.date = date;
+    }
+
+    public void addRow(InvoiceRow row) {
+      rows.add(row);
+    }
+
+    @Override
+    public String toString() {
+      return "Invoice[" + shop + ' ' + date + ' ' + rows + ']';
+    }
+  }
+
+  public static class Shop {
+
+    public String name;
+
+    public Shop(String name) {
+      this.name = name;
+    }
+
+    @Override
+    public String toString() {
+      return "Shop[" + name + ']';
+    }
+  }
+
+  public static class InvoiceRow {
+
+    public int quantity;
+    public BigDecimal unitPrice;
+
+    public InvoiceRow(int quantity, BigDecimal unitPrice) {
+      this.quantity = quantity;
+      this.unitPrice = unitPrice;
+    }
+
+    @Override
+    public String toString() {
+      return "Row[" + quantity + " x " + unitPrice + ']';
+    }
+  }
+
+  static class LocalDate {}
+}