1 files changed, 44 insertions, 0 deletions
diff --git a/vespajlib/src/main/java/ai/vespa/llm/test/MockLanguageModel.java b/vespajlib/src/main/java/ai/vespa/llm/test/MockLanguageModel.java
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index 00000000000..d47f43c55b2
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+++ b/vespajlib/src/main/java/ai/vespa/llm/test/MockLanguageModel.java
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+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package ai.vespa.llm.test;
+
+import ai.vespa.llm.LanguageModel;
+import ai.vespa.llm.completion.Completion;
+import ai.vespa.llm.completion.Prompt;
+import com.yahoo.api.annotations.Beta;
+
+import java.util.List;
+import java.util.function.Function;
+
+/**
+ * @author bratseth
+ */
+@Beta
+public class MockLanguageModel implements LanguageModel {
+
+    private final Function<Prompt, List<Completion>> completer;
+
+    public MockLanguageModel(Builder builder) {
+        completer = builder.completer;
+    }
+
+    @Override
+    public List<Completion> complete(Prompt prompt) {
+        return completer.apply(prompt);
+    }
+
+    public static class Builder {
+
+        private Function<Prompt, List<Completion>> completer = prompt -> List.of(Completion.from(""));
+
+        public Builder completer(Function<Prompt, List<Completion>> completer) {
+            this.completer = completer;
+            return this;
+        }
+
+        public Builder() {}
+
+        public MockLanguageModel build() { return new MockLanguageModel(this); }
+
+    }
+
+}