Skip integration tests with Exasol 8

src/test/java/com/exasol/adapter/dialects/oracle/ExasolVersionCheck.java

@@ -0,0 +1,32 @@
+package com.exasol.adapter.dialects.oracle;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+import java.sql.*;
+
+class ExasolVersionCheck {
+
+    private ExasolVersionCheck() {
+        // Not instantiable
+    }
+
+    /**
+     * This is a temporary workaround until integration tests work with Exasol 8.
+     */
+    static void assumeExasolVersion7(final Connection connection) {
+        final String version = getExasolMajorVersion(connection);
+        assumeTrue("7".equals(version), "Expected Exasol version 7 but got '" + version + "'");
+    }
+
+    static String getExasolMajorVersion(final Connection connection) {
+        try (Statement stmt = connection.createStatement()) {
+            final ResultSet result = stmt
+                    .executeQuery("SELECT PARAM_VALUE FROM SYS.EXA_METADATA WHERE PARAM_NAME='databaseMajorVersion'");
+            assertTrue(result.next(), "no result");
+            return result.getString(1);
+        } catch (final SQLException exception) {
+            throw new IllegalStateException("Failed to query Exasol version: " + exception.getMessage(), exception);
+        }
+    }
+}

src/test/java/com/exasol/adapter/dialects/oracle/OracleScalarFunctionsIT.java

@@ -34,6 +34,11 @@ protected static String getUniqueIdentifier() {
         return "ID" + idCounter;
     }
 
+    @BeforeAll
+    static void assumeExasol71() throws SQLException {
+        ExasolVersionCheck.assumeExasolVersion7(SETUP.getExasolContainer().createConnection());
+    }
+
     @Override
     protected TestSetup getTestSetup() {
         final OracleObjectFactory oracleFactory = SETUP.getOracleFactory();
@@ -42,11 +47,11 @@ protected TestSetup getTestSetup() {
 
     private static class OracleSingleTableVirtualSchemaTestSetup implements VirtualSchemaTestSetup {
         private final VirtualSchema virtualSchema;
-        private final Schema OracleSchema;
+        private final Schema oracleSchema;
 
-        private OracleSingleTableVirtualSchemaTestSetup(final VirtualSchema virtualSchema, final Schema OracleSchema) {
+        private OracleSingleTableVirtualSchemaTestSetup(final VirtualSchema virtualSchema, final Schema oracleSchema) {
             this.virtualSchema = virtualSchema;
-            this.OracleSchema = OracleSchema;
+            this.oracleSchema = oracleSchema;
         }
 
         @Override
@@ -57,7 +62,7 @@ public String getFullyQualifiedName() {
         @Override
         public void close() {
             this.virtualSchema.drop();
-            this.OracleSchema.drop();
+            this.oracleSchema.drop();
         }
     }
 

src/test/java/com/exasol/adapter/dialects/oracle/OracleSqlDialectIT.java

@@ -66,8 +66,8 @@ class OracleSqlDialectIT {
     @BeforeAll
     static void beforeAll()
             throws BucketAccessException, TimeoutException, SQLException, FileNotFoundException, InterruptedException {
-        setupOracleDbContainer();
         setupExasolContainer();
+        setupOracleDbContainer();
     }
 
     private static void uploadInstantClientToBucket()
@@ -82,7 +82,7 @@ private static String getTestHostIpFromInsideExasol(final ExasolContainer<?> exa
         final Map<String, ContainerNetwork> networks = exasolContainer.getContainerInfo().getNetworkSettings()
                 .getNetworks();
         if (networks.size() == 0) {
-            return null;
+            throw new IllegalStateException("Failed to get host IP from container network settings");
         }
         return networks.values().iterator().next().getGateway();
     }
@@ -94,6 +94,7 @@ private static void setupExasolContainer()
         uploadInstantClientToBucket();
         final Connection exasolConnection = exasolContainer.createConnectionForUser(exasolContainer.getUsername(),
                 exasolContainer.getPassword());
+        ExasolVersionCheck.assumeExasolVersion7(exasolConnection);
         statementExasol = exasolConnection.createStatement();
 
         final UdfTestSetup udfTestSetup = new UdfTestSetup(getTestHostIpFromInsideExasol(exasolContainer),