Spring AI PromptTemplate: Parameterized 'render(Map)' fails to handle 'Resource' in this.variables (inconsistent with no-arg render)

Bug Description The parameterized render(Map<String, Object> additionalVariables) method of the org.springframework.ai.chat.prompt.PromptTemplate class lacks handling for Resource-type variables in this.variables, resulting in inconsistent behavior compared to the no-arg render() method.

Environment - Java Version: OpenJdk 22.0.2 - Spring AI Version: 1.0.2

Steps to Reproduce 1. Create a classpath resource file templates/tem.txt with the content: Zhang San (note: this is the expected value to be rendered). 2. Run the following test code:

    @Test
    public void testPromptTemplate() throws IOException {
        // Load the classpath resource (content: "Zhang San")
        Resource resource = new ClassPathResource("templates/tem.txt");

        // Build PromptTemplate: bind the Resource to "name" in this.variables
        PromptTemplate promptTemplate = PromptTemplate.builder()
                .template("hello {name}")
                .variables(Map.of("name", resource))
                .build();

        /*
         * Actual Output: hello class path resource [templates/tem.txt]
         * Expected Output: hello Zhang San
         */
        System.out.println(promptTemplate.render(Map.of())); // Call parameterized render with empty additional variables
    }

Comment From: elmahdi43

Hello, I just checked your bug. It was fixed in the commit 0fd9fd5 I think you can close this one @ilayaperumalg