Fix case-sensitivity bug for port numbers in command

core/src/main/java/org/testcontainers/containers/wait/internal/InternalCommandPortListeningCheck.java

@@ -29,7 +29,7 @@ public Boolean call() {
 
     private void tryPort(Integer internalPort) {
         String[][] commands = {
-                {"/bin/sh", "-c", format("cat /proc/net/tcp | awk '{print $2}' | grep :%x && echo %s", internalPort, SUCCESS_MARKER)},
+                {"/bin/sh", "-c", format("cat /proc/net/tcp | awk '{print $2}' | grep :%X && echo %s", internalPort, SUCCESS_MARKER)},
                 {"/bin/sh", "-c", format("nc -vz -w 1 localhost %d && echo %s", internalPort, SUCCESS_MARKER)},
                 {"/bin/bash", "-c", format("</dev/tcp/localhost/%d && echo %s", internalPort, SUCCESS_MARKER)}
         };

core/src/test/java/org/testcontainers/containers/wait/internal/InternalCommandPortListeningCheckTest.java

@@ -3,31 +3,36 @@
 import com.google.common.collect.ImmutableSet;
 import org.junit.Rule;
 import org.junit.Test;
+import org.testcontainers.containers.BindMode;
 import org.testcontainers.containers.GenericContainer;
 
 import static org.rnorth.visibleassertions.VisibleAssertions.assertThrows;
 import static org.rnorth.visibleassertions.VisibleAssertions.assertTrue;
 
 public class InternalCommandPortListeningCheckTest {
 
-    @Rule
-    public GenericContainer nginx = new GenericContainer<>("nginx:1.9.4");
+  // Linking a custom configuration into the container so that nginx is listening on port 8080. This is necessary to proof
+  // that the command formatting uses the correct casing for hexadecimal numberd (i.e. 1F90 and not 1f90).
+  @Rule
+  public GenericContainer nginx = new GenericContainer<>("nginx:1.9.4")
+      .withClasspathResourceMapping("nginx.conf", "/etc/nginx/conf.d/default.conf", BindMode.READ_ONLY);
 
-    @Test
-    public void singleListening() {
-        final InternalCommandPortListeningCheck check = new InternalCommandPortListeningCheck(nginx, ImmutableSet.of(80));
+  @Test
+  public void singleListening() {
+    final InternalCommandPortListeningCheck check = new InternalCommandPortListeningCheck(nginx, ImmutableSet.of(8080));
 
-        final Boolean result = check.call();
+    final Boolean result = check.call();
 
-        assertTrue("InternalCommandPortListeningCheck identifies a single listening port", result);
-    }
+    assertTrue("InternalCommandPortListeningCheck identifies a single listening port", result);
+  }
 
-    @Test
-    public void nonListening() {
-        final InternalCommandPortListeningCheck check = new InternalCommandPortListeningCheck(nginx, ImmutableSet.of(80, 1234));
+  @Test
+  public void nonListening() {
+    final InternalCommandPortListeningCheck check = new InternalCommandPortListeningCheck(nginx, ImmutableSet.of(8080, 1234));
+
+    assertThrows("InternalCommandPortListeningCheck detects a non-listening port among many",
+        IllegalStateException.class,
+        (Runnable) check::call);
+  }
 
-        assertThrows("InternalCommandPortListeningCheck detects a non-listening port among many",
-                IllegalStateException.class,
-                (Runnable) check::call);
-    }
 }

core/src/test/resources/nginx.conf

@@ -0,0 +1,44 @@
+server {
+    listen       8080;
+    server_name  localhost;
+
+    #charset koi8-r;
+    #access_log  /var/log/nginx/host.access.log  main;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+    }
+
+    #error_page  404              /404.html;
+
+    # redirect server error pages to the static page /50x.html
+    #
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+
+    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
+    #
+    #location ~ \.php$ {
+    #    proxy_pass   http://127.0.0.1;
+    #}
+
+    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
+    #
+    #location ~ \.php$ {
+    #    root           html;
+    #    fastcgi_pass   127.0.0.1:9000;
+    #    fastcgi_index  index.php;
+    #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
+    #    include        fastcgi_params;
+    #}
+
+    # deny access to .htaccess files, if Apache's document root
+    # concurs with nginx's one
+    #
+    #location ~ /\.ht {
+    #    deny  all;
+    #}
+}