tests: add test cases for Granite models chat parser

Author: shun095

tests/test-chat.cpp

@@ -1400,6 +1400,12 @@ static void test_template_output_parsers() {
                 "Hello, world!\nWhat's up?",
                 /* is_partial= */ false,
                 {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(
+            message_assist,
+            common_chat_parse(
+                "Hello, world!\nWhat's up?",
+                /* is_partial= */ true,
+                {COMMON_CHAT_FORMAT_GRANITE}));
 
         // Test parsing content with thinking
         assert_msg_equals(message_assist_thoughts,
@@ -1410,13 +1416,98 @@ static void test_template_output_parsers() {
                     /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
                     /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
                 }));
+        assert_msg_equals(message_assist_thoughts_unparsed_deepseek,
+            common_chat_parse(
+                "<think>I'm\nthinking</think>Hello, world!\nWhat's up?",
+                /* is_partial= */ false,
+                {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(message_assist_thoughts,
+            common_chat_parse(
+                "<think>I'm\nthinking</think><response>Hello, world!\nWhat's up?",
+                /* is_partial= */ true,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
+        assert_msg_equals(message_assist_thoughts,
+            common_chat_parse(
+                "<think>I'm\nthinking</think><response>Hello, world!\nWhat's up?</response>",
+                /* is_partial= */ false,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
+        assert_msg_equals(simple_assist_msg("<think>I'm\nthinking</think><response>Hello, world!\nWhat's up?</response>"),
+            common_chat_parse(
+                "<think>I'm\nthinking</think><response>Hello, world!\nWhat's up?</response>",
+                /* is_partial= */ false,
+                {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(message_assist_empty,
+            common_chat_parse(
+                "<think",
+                /* is_partial= */ true,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
+        assert_msg_equals(message_assist_empty,
+            common_chat_parse(
+                "<think",
+                /* is_partial= */ true,
+                {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(message_assist_thoughts_no_content,
+            common_chat_parse(
+                "<think>I'm\nthinking",
+                /* is_partial= */ true,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
+        assert_msg_equals(
+            message_assist_empty,
+            common_chat_parse(
+                "<think>I'm\nthinking</think><response",
+                /* is_partial= */ true,
+                {COMMON_CHAT_FORMAT_GRANITE}));
 
         // Test parsing tool calls
         assert_msg_equals(message_assist_call,
             common_chat_parse(
                 "<|tool_call|>[{\"name\": \"special_function\", \"arguments\": {\"arg1\": 1}}]",
                 /* is_partial= */ false,
                 {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(
+            message_assist_call_empty_args,
+            common_chat_parse(
+                "<|tool_call|>[{\"name\": \"special_function\"",
+                /* is_partial= */ true,
+                {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(
+            message_assist_call_cutoff_args,
+            common_chat_parse(
+                "<|tool_call|>[{\"name\": \"special_function\", \"arguments\": {\"arg",
+                /* is_partial= */ true,
+                {COMMON_CHAT_FORMAT_GRANITE}));
+        assert_msg_equals(
+            message_assist_call_cutoff_args,
+            common_chat_parse(
+                "<|tool_call|>[{\"name\": \"special_function\", \"arguments\": {\"arg",
+                /* is_partial= */ true,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
+
+        // Test parsing tool calls with thinking
+        assert_msg_equals(
+            message_assist_call_thoughts,
+            common_chat_parse(
+                "<think>I'm\nthinking</think><|tool_call|>[{\"name\": \"special_function\", \"arguments\": {\"arg1\": 1}, {",
+                /* is_partial= */ true,
+                {
+                    /* .format = */ COMMON_CHAT_FORMAT_GRANITE,
+                    /* .reasoning_format = */ COMMON_REASONING_FORMAT_DEEPSEEK,
+                }));
 
         // Test template generation for regular content
         test_templates(tmpls.get(), end_tokens, message_assist, tools,