Added test 1393.

Author: javadev

src/main/java/g1301_1400/s1393_capital_gainloss/script.sql

@@ -1,12 +1,5 @@
 # Write your MySQL query statement below
 # #Medium #LeetCode_Curated_SQL_70 #Database #SQL_I_Day_9_Control_of_Flow
-# #2022_05_24_Time_457_ms_(79.39%)_Space_0B_(100.00%)
-SELECT
-    stock_name, 
-    SUM(IF (operation = 1, price, -1 * price)) AS capital_gain_loss
-FROM
-    Stocks
-GROUP BY
-    stock_name
-ORDER BY
-    operation_day asc;
+# #2022_07_26_Time_428_ms_(92.01%)_Space_0B_(100.00%)
+SELECT stock_name, SUM(CASE WHEN operation='Sell' THEN price ELSE -price END) AS capital_gain_loss
+FROM Stocks GROUP BY stock_name;

src/test/java/g1301_1400/s1393_capital_gainloss/MysqlTest.java

@@ -0,0 +1,74 @@
+package g1301_1400.s1393_capital_gainloss;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.stream.Collectors;
+import javax.sql.DataSource;
+import org.junit.jupiter.api.Test;
+import org.zapodot.junit.db.annotations.EmbeddedDatabase;
+import org.zapodot.junit.db.annotations.EmbeddedDatabaseTest;
+import org.zapodot.junit.db.common.CompatibilityMode;
+
+@EmbeddedDatabaseTest(
+        compatibilityMode = CompatibilityMode.MySQL,
+        initialSqls =
+                "CREATE TABLE Stocks(stock_name VARCHAR, operation VARCHAR,"
+                        + " operation_day INTEGER, price INTEGER); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Leetcode', 'Buy', 1, 1000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Buy', 2, 10); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Leetcode', 'Sell', 5, 9000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Handbags', 'Buy', 17, 30000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Sell', 3, 1010); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Buy', 4, 1000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Sell', 5, 500); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Buy', 6, 1000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Handbags', 'Sell', 29, 7000); "
+                        + "INSERT INTO Stocks(stock_name, operation, operation_day, price)"
+                        + " VALUES ('Corona Masks', 'Sell', 10, 10000); ")
+class MysqlTest {
+    @Test
+    void testScript(@EmbeddedDatabase DataSource dataSource)
+            throws SQLException, FileNotFoundException {
+        try (final Connection connection = dataSource.getConnection()) {
+            try (final Statement statement = connection.createStatement();
+                    final ResultSet resultSet =
+                            statement.executeQuery(
+                                    new BufferedReader(
+                                                    new FileReader(
+                                                            "src/main/java/g1301_1400/s1393_"
+                                                                    + "capital_gainloss"
+                                                                    + "/script.sql"))
+                                            .lines()
+                                            .collect(Collectors.joining("\n"))
+                                            .replaceAll("#.*?\\r?\\n", ""))) {
+                assertThat(resultSet.next(), equalTo(true));
+                assertThat(resultSet.getNString(1), equalTo("Corona Masks"));
+                assertThat(resultSet.getInt(2), equalTo(9500));
+                assertThat(resultSet.next(), equalTo(true));
+                assertThat(resultSet.getNString(1), equalTo("Handbags"));
+                assertThat(resultSet.getInt(2), equalTo(-23000));
+                assertThat(resultSet.next(), equalTo(true));
+                assertThat(resultSet.getNString(1), equalTo("Leetcode"));
+                assertThat(resultSet.getInt(2), equalTo(8000));
+                assertThat(resultSet.next(), equalTo(false));
+            }
+        }
+    }
+}