Add tests for Java examples

Author: anandmali

java/pom.xml

@@ -20,6 +20,13 @@
             <artifactId>google-genai</artifactId>
             <version>0.2.0</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.9.1</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>

java/src/main/java/com/example/gemini/BuildConfig.java

@@ -17,5 +17,5 @@
 package com.example.gemini;
 
 public class BuildConfig {
-    public static String media_path = "third_party/";
+    public static String media_path = "../third_party/";
 }

java/src/main/java/com/example/gemini/CodeExecutionRequestOverride.java renamed to java/src/main/java/com/example/gemini/CodeExecution.java

@@ -17,14 +17,84 @@
 package com.example.gemini;
 
 import com.google.genai.Client;
-import com.google.genai.types.*;
-import org.apache.http.HttpException;
+import com.google.genai.types.GenerateContentConfig;
+import com.google.genai.types.GenerateContentResponse;
+import com.google.genai.types.Part;
+import com.google.genai.types.Tool;
+import com.google.genai.types.ToolCodeExecution;
 
-import java.io.IOException;
 import java.util.Collections;
 
-public class CodeExecutionRequestOverride {
-    public static void main(String[] args) throws IOException, HttpException {
+@SuppressWarnings("resource")
+public class CodeExecution {
+    public static GenerateContentResponse CodeExecutionBasic() throws Exception {
+        // [START code_execution_basic]
+        Client client = new Client();
+
+        String prompt = """
+                Write and execute code that calculates the sum of the first 50 prime numbers.
+                Ensure that only the executable code and its resulting output are generated.
+                """;
+
+        GenerateContentResponse response =
+                client.models.generateContent(
+                        "gemini-2.0-pro-exp-02-05",
+                        prompt,
+                        null);
+
+        for (Part part : response.candidates().get().getFirst().content().get().parts().get()) {
+            System.out.println(part + "\n");
+        }
+
+        System.out.println("-".repeat(80));
+        System.out.println(response.text());
+        // [END code_execution_basic]
+
+        /*
+           [START code_execution_basic_return]
+           Expected output:
+           --------------------------------------------------------------------------------
+           ```python
+           import math
+
+           def is_prime(n):
+               """Checks if a number is prime."""
+               if n < 2:
+                   return False
+               if n == 2:
+                   return True
+               if n % 2 == 0:
+                   return False
+               # Check only odd divisors up to the square root
+               for i in range(3, int(math.sqrt(n)) + 1, 2):
+                   if n % i == 0:
+                       return False
+               return True
+
+           count = 0
+           num = 2
+           prime_sum = 0
+           target_count = 50
+
+           while count < target_count:
+               if is_prime(num):
+                   prime_sum += num
+                   count += 1
+               num += 1
+
+           print(prime_sum)
+           ```
+
+           Output:
+           ```
+           5117
+           ```
+           [END code_execution_basic_return]
+         */
+        return response;
+    }
+
+    public static GenerateContentResponse CodeExecutionRequestOverride() throws Exception {
         // [START code_execution_request_override]
         Client client = new Client();
 
@@ -42,13 +112,13 @@ public static void main(String[] args) throws IOException, HttpException {
                                 )
                         ).build();
 
-
         GenerateContentResponse response =
                 client.models.generateContent(
                         "gemini-2.0-flash",
                         prompt,
                         config);
 
+        System.out.println("-".repeat(80));
         System.out.println(response.executableCode());
         System.out.println(response.codeExecutionResult());
         // [END code_execution_request_override]
@@ -57,7 +127,6 @@ public static void main(String[] args) throws IOException, HttpException {
            [START code_execution_request_override_return]
            Expected output:
            --------------------------------------------------------------------------------
-
            def is_prime(n):
                 if n <= 1:
                     return False
@@ -84,8 +153,8 @@ def is_prime(n):
 
             primes=[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229]
             sum(primes)=5117
-
            [END code_execution_request_override_return]
          */
+        return response;
     }
 }

java/src/main/java/com/example/gemini/CodeExecutionBasic.java

@@ -19,13 +19,12 @@
 import com.google.genai.Client;
 import com.google.genai.types.GenerateContentConfig;
 import com.google.genai.types.GenerateContentResponse;
-import org.apache.http.HttpException;
+import org.jspecify.annotations.Nullable;
 
-import java.io.IOException;
 import java.util.List;
 
 public class ConfigureModelParameters {
-    public static void main(String[] args) throws IOException, HttpException {
+    public static @Nullable String ContentGneConfigureModelParameters() throws Exception {
         // [START configure_model_parameters]
         Client client = new Client();
 
@@ -45,5 +44,6 @@ public static void main(String[] args) throws IOException, HttpException {
 
         System.out.println(response.text());
         // [END configure_model_parameters]
+        return response.text();
     }
 }