Fixes for new strategies (#7085)

* Improve DockerDesktopClientProviderStrategy description
* Fix TestcontainersHostPropertyClientProviderStrategy only when tc.host is present

Fixes #7082

Author: eddumelendez

core/src/main/java/org/testcontainers/dockerclient/DockerDesktopClientProviderStrategy.java

@@ -41,7 +41,7 @@ private Path resolveSocketPath() {
 
     @Override
     public String getDescription() {
-        return "Rootless Docker accessed via Unix socket (" + getSocketPath() + ")";
+        return "Docker accessed via Unix socket (" + getSocketPath() + ")";
     }
 
     @Override

core/src/main/java/org/testcontainers/dockerclient/TestcontainersHostPropertyClientProviderStrategy.java

@@ -17,7 +17,7 @@ public final class TestcontainersHostPropertyClientProviderStrategy extends Dock
 
     public static final int PRIORITY = EnvironmentAndSystemPropertyClientProviderStrategy.PRIORITY - 10;
 
-    private final DockerClientConfig dockerClientConfig;
+    private DockerClientConfig dockerClientConfig;
 
     public TestcontainersHostPropertyClientProviderStrategy() {
         this(DefaultDockerClientConfig.createDefaultConfigBuilder());
@@ -28,8 +28,10 @@ public TestcontainersHostPropertyClientProviderStrategy() {
             TestcontainersConfiguration.getInstance().getUserProperty("tc.host", null)
         );
 
-        tcHost.ifPresent(configBuilder::withDockerHost);
-        this.dockerClientConfig = configBuilder.build();
+        if (tcHost.isPresent()) {
+            configBuilder.withDockerHost(tcHost.get());
+            this.dockerClientConfig = configBuilder.build();
+        }
     }
 
     @Override
@@ -46,6 +48,11 @@ public TransportConfig getTransportConfig() throws InvalidConfigurationException
             .build();
     }
 
+    @Override
+    protected boolean isApplicable() {
+        return this.dockerClientConfig != null;
+    }
+
     @Override
     protected int getPriority() {
         return PRIORITY;

core/src/test/java/org/testcontainers/dockerclient/TestcontainersHostPropertyClientProviderStrategyTest.java

@@ -1,7 +1,5 @@
 package org.testcontainers.dockerclient;
 
-import com.github.dockerjava.core.DefaultDockerClientConfig;
-import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -24,16 +22,6 @@ public class TestcontainersHostPropertyClientProviderStrategyTest {
 
     private URI defaultDockerHost;
 
-    private com.github.dockerjava.core.SSLConfig defaultSSLConfig;
-
-    @Before
-    public void checkEnvironmentClear() {
-        // If docker-java picks up non-default settings from the environment, our test needs to know to expect those
-        DefaultDockerClientConfig defaultConfig = DefaultDockerClientConfig.createDefaultConfigBuilder().build();
-        this.defaultDockerHost = defaultConfig.getDockerHost();
-        this.defaultSSLConfig = defaultConfig.getSSLConfig();
-    }
-
     @Test
     public void tcHostPropertyIsProvided() {
         Mockito
@@ -43,9 +31,9 @@ public void tcHostPropertyIsProvided() {
 
         TestcontainersHostPropertyClientProviderStrategy strategy = new TestcontainersHostPropertyClientProviderStrategy();
 
+        assertThat(strategy.isApplicable()).isTrue();
         TransportConfig transportConfig = strategy.getTransportConfig();
         assertThat(transportConfig.getDockerHost().toString()).isEqualTo("tcp://127.0.0.1:9000");
-        assertThat(transportConfig.getSslConfig()).isEqualTo(this.defaultSSLConfig);
     }
 
     @Test
@@ -54,8 +42,6 @@ public void tcHostPropertyIsNotProvided() {
 
         TestcontainersHostPropertyClientProviderStrategy strategy = new TestcontainersHostPropertyClientProviderStrategy();
 
-        TransportConfig transportConfig = strategy.getTransportConfig();
-        assertThat(transportConfig.getDockerHost()).isEqualTo(this.defaultDockerHost);
-        assertThat(transportConfig.getSslConfig()).isEqualTo(this.defaultSSLConfig);
+        assertThat(strategy.isApplicable()).isFalse();
     }
 }