test: additional functions parameters tests

Author: DeveloperC286

src/syntax_analysis/snapshots/rust_monkey_interpreter__syntax_analysis__tests__test_syntax_analysis_for_function_expression_case2.snap

@@ -0,0 +1,23 @@
+---
+source: src/syntax_analysis/tests.rs
+expression: returned_abstract_syntax_tree
+---
+{
+  "abstract_syntax_tree": [
+    {
+      "EXPRESSION": {
+        "expression": {
+          "FUNCTION": {
+            "parameters": [],
+            "block": {
+              "BLOCK": {
+                "blocks": []
+              }
+            }
+          }
+        }
+      }
+    }
+  ],
+  "syntax_parsing_errors": []
+}

src/syntax_analysis/snapshots/rust_monkey_interpreter__syntax_analysis__tests__test_syntax_analysis_for_function_expression_case3.snap

@@ -0,0 +1,32 @@
+---
+source: src/syntax_analysis/tests.rs
+expression: returned_abstract_syntax_tree
+---
+{
+  "abstract_syntax_tree": [
+    {
+      "EXPRESSION": {
+        "expression": {
+          "FUNCTION": {
+            "parameters": [
+              {
+                "IDENTIFIER": {
+                  "identifier_token": {
+                    "token_type": "IDENTIFIER",
+                    "literal": "x"
+                  }
+                }
+              }
+            ],
+            "block": {
+              "BLOCK": {
+                "blocks": []
+              }
+            }
+          }
+        }
+      }
+    }
+  ],
+  "syntax_parsing_errors": []
+}

src/syntax_analysis/tests.rs

@@ -25,6 +25,29 @@ use rstest::rstest;
         ],
         "test_syntax_analysis_for_function_expression_case1"
     ),
+    case(
+        vec![
+            Token{token_type: TokenType::FUNCTION, literal: "fn".to_string()},
+            Token{token_type: TokenType::OPENING_ROUND_BRACKET, literal: "(".to_string()},
+            Token{token_type: TokenType::CLOSING_ROUND_BRACKET, literal: ")".to_string()},
+            Token{token_type: TokenType::OPENING_CURLY_BRACKET, literal: "{".to_string()},
+            Token{token_type: TokenType::CLOSING_CURLY_BRACKET, literal: "}".to_string()},
+            Token{token_type: TokenType::EOF, literal: "".to_string()},
+        ],
+        "test_syntax_analysis_for_function_expression_case2"
+    ),
+    case(
+        vec![
+            Token{token_type: TokenType::FUNCTION, literal: "fn".to_string()},
+            Token{token_type: TokenType::OPENING_ROUND_BRACKET, literal: "(".to_string()},
+            Token{token_type: TokenType::IDENTIFIER, literal: "x".to_string()},
+            Token{token_type: TokenType::CLOSING_ROUND_BRACKET, literal: ")".to_string()},
+            Token{token_type: TokenType::OPENING_CURLY_BRACKET, literal: "{".to_string()},
+            Token{token_type: TokenType::CLOSING_CURLY_BRACKET, literal: "}".to_string()},
+            Token{token_type: TokenType::EOF, literal: "".to_string()},
+        ],
+        "test_syntax_analysis_for_function_expression_case3"
+    ),
 )]
 fn test_syntax_analysis_for_function_expression(tokens: Vec<Token>, snapshot_name: &str) {
     assert_expected_returned_abstract_syntax_tree(tokens, snapshot_name);