feat: imporve test cases in cookiecutter template

Author: wisarootl

.cursor/.dev/1-update-cookiecutter-test-template.md

@@ -67,6 +67,7 @@ Update the cookiecutter template for `test_solution.py` to use a for loop approa
     - Change from `{{method.test_cases}}` to `{{method.test_cases.list | join(', ')}}`
     - This follows the existing pattern used by other list fields in the template
     - Template line 30: `@pytest.mark.parametrize("{{method.parametrize}}", [{{method.test_cases.list | join(', ')}}])`
+    - **✅ Validated:** Correctly follows existing "list" pattern used by `_tags`, `_readme_examples`, etc.
 
 ### Phase 2: Create JSON Migration Script
 
@@ -83,14 +84,7 @@ Update the cookiecutter template for `test_solution.py` to use a for loop approa
     - Create backup of original files
     - Validate migrated JSON structure
 
-### Phase 4: Update Template Generation Logic
-
-1. **Modify cookiecutter generation code**
-    - Update any code that generates the `test_cases` field to output JSON arrays instead of strings
-    - Ensure new list format is used when creating new problems
-    - Keep all other generation logic the same
-
-### Phase 5: Testing and Validation
+### Phase 4: Testing and Validation
 
 1. **Test generated templates**
     - Generate a test problem using updated template
@@ -105,7 +99,7 @@ Update the cookiecutter template for `test_solution.py` to use a for loop approa
     - Verify no regressions in test functionality
     - Document any issues found and fix them
 
-### Phase 6: Update Documentation
+### Phase 5: Update Documentation
 
 1. **Update problem creation documentation**
     - Update `.cursor/commands/problem-creation.md` to reflect new JSON structure
@@ -140,16 +134,18 @@ Update the cookiecutter template for `test_solution.py` to use a for loop approa
 
 ### Generation Code
 
-- Any code that creates the `test_cases` field (to be identified)
+- **No changes needed** - The `test_cases` field is created manually, not by automated code
+- The existing "list" pattern is already established and working correctly
+- Phase 4 removed after investigation showed no automated generation code exists
 
 ## Implementation Steps
 
 1. ✅ Create this plan document
-2. 🔄 Update cookiecutter template
-3. 🔄 Create migration script
-4. 🔄 Run migration on all JSON files
-5. 🔄 Test updated template generation
-6. 🔄 Validate all tests still work
+2. ✅ Update cookiecutter template
+3. ✅ Create migration script
+4. ✅ Run migration on all JSON files
+5. ✅ Test updated template generation
+6. ✅ Validate all tests still work
 7. 🔄 Update documentation (separate step - do not combine with implementation)
 
 ## Risk Mitigation

leetcode_py/cli/resources/leetcode/json/problems/accounts_merge.json

@@ -5,7 +5,9 @@
     "problem_title": "Accounts Merge",
     "difficulty": "Medium",
     "topics": "Array, Hash Table, String, Depth-First Search, Breadth-First Search, Union Find, Sorting",
-    "_tags": { "list": ["grind-75"] },
+    "_tags": {
+        "list": ["grind-75"]
+    },
     "readme_description": "Given a list of `accounts` where each element `accounts[i]` is a list of strings, where the first element `accounts[i][0]` is a name, and the rest of the elements are emails representing emails of the account.\n\nNow, we would like to merge these accounts. Two accounts definitely belong to the same person if there is some common email to both accounts. Note that even if two accounts have the same name, they may belong to different people as people could have the same name. A person can have any number of accounts initially, but all of their accounts definitely have the same name.\n\nAfter merging the accounts, return the accounts in the following format: the first element of each account is the name, and the rest of the elements are emails in sorted order. The accounts themselves can be returned in any order.",
     "_readme_examples": {
         "list": [
@@ -44,15 +46,36 @@
         ]
     },
     "_test_helper_methods": {
-        "list": [{ "name": "setup_method", "parameters": "", "body": "self.solution = Solution()" }]
+        "list": [
+            {
+                "name": "setup_method",
+                "parameters": "",
+                "body": "self.solution = Solution()"
+            }
+        ]
     },
     "_test_methods": {
         "list": [
             {
                 "name": "test_accounts_merge",
                 "signature": "(self, accounts: list[list[str]], expected: list[list[str]])",
                 "parametrize": "accounts, expected",
-                "test_cases": "[([['John', '[email protected]', '[email protected]'], ['John', '[email protected]', '[email protected]'], ['Mary', '[email protected]'], ['John', '[email protected]']], [['John', '[email protected]', '[email protected]', '[email protected]'], ['Mary', '[email protected]'], ['John', '[email protected]']]), ([['Gabe', '[email protected]', '[email protected]', '[email protected]'], ['Kevin', '[email protected]', '[email protected]', '[email protected]'], ['Ethan', '[email protected]', '[email protected]', '[email protected]'], ['Hanzo', '[email protected]', '[email protected]', '[email protected]'], ['Fern', '[email protected]', '[email protected]', '[email protected]']], [['Ethan', '[email protected]', '[email protected]', '[email protected]'], ['Gabe', '[email protected]', '[email protected]', '[email protected]'], ['Hanzo', '[email protected]', '[email protected]', '[email protected]'], ['Kevin', '[email protected]', '[email protected]', '[email protected]'], ['Fern', '[email protected]', '[email protected]', '[email protected]']]), ([['Alice', '[email protected]']], [['Alice', '[email protected]']]), ([['Bob', '[email protected]'], ['Bob', '[email protected]']], [['Bob', '[email protected]'], ['Bob', '[email protected]']]), ([['Alice', '[email protected]', '[email protected]'], ['Alice', '[email protected]', '[email protected]']], [['Alice', '[email protected]', '[email protected]', '[email protected]']]), ([['A', '[email protected]', '[email protected]'], ['B', '[email protected]', '[email protected]'], ['C', '[email protected]', '[email protected]']], [['A', '[email protected]', '[email protected]', '[email protected]', '[email protected]']]), ([['David', '[email protected]'], ['David', '[email protected]']], [['David', '[email protected]']]), ([['Alex', '[email protected]'], ['Bob', '[email protected]'], ['Charlie', '[email protected]']], [['Alex', '[email protected]'], ['Bob', '[email protected]'], ['Charlie', '[email protected]']]), ([['John', '[email protected]', '[email protected]'], ['John', '[email protected]'], ['Jane', '[email protected]']], [['John', '[email protected]', '[email protected]'], ['John', '[email protected]'], ['Jane', '[email protected]']]), ([['User', '[email protected]', '[email protected]'], ['User', '[email protected]', '[email protected]'], ['User', '[email protected]', '[email protected]']], [['User', '[email protected]', '[email protected]', '[email protected]', '[email protected]']]), ([['Test', '[email protected]'], ['Test', '[email protected]'], ['Test', '[email protected]', '[email protected]']], [['Test', '[email protected]'], ['Test', '[email protected]', '[email protected]']]), ([['Name', '[email protected]', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]']], [['Name', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]', '[email protected]', '[email protected]']])]",
+                "test_cases": {
+                    "list": [
+                        "([['John', '[email protected]', '[email protected]'], ['John', '[email protected]', '[email protected]'], ['Mary', '[email protected]'], ['John', '[email protected]']], [['John', '[email protected]', '[email protected]', '[email protected]'], ['Mary', '[email protected]'], ['John', '[email protected]']])",
+                        "([['Gabe', '[email protected]', '[email protected]', '[email protected]'], ['Kevin', '[email protected]', '[email protected]', '[email protected]'], ['Ethan', '[email protected]', '[email protected]', '[email protected]'], ['Hanzo', '[email protected]', '[email protected]', '[email protected]'], ['Fern', '[email protected]', '[email protected]', '[email protected]']], [['Ethan', '[email protected]', '[email protected]', '[email protected]'], ['Gabe', '[email protected]', '[email protected]', '[email protected]'], ['Hanzo', '[email protected]', '[email protected]', '[email protected]'], ['Kevin', '[email protected]', '[email protected]', '[email protected]'], ['Fern', '[email protected]', '[email protected]', '[email protected]']])",
+                        "([['Alice', '[email protected]']], [['Alice', '[email protected]']])",
+                        "([['Bob', '[email protected]'], ['Bob', '[email protected]']], [['Bob', '[email protected]'], ['Bob', '[email protected]']])",
+                        "([['Alice', '[email protected]', '[email protected]'], ['Alice', '[email protected]', '[email protected]']], [['Alice', '[email protected]', '[email protected]', '[email protected]']])",
+                        "([['A', '[email protected]', '[email protected]'], ['B', '[email protected]', '[email protected]'], ['C', '[email protected]', '[email protected]']], [['A', '[email protected]', '[email protected]', '[email protected]', '[email protected]']])",
+                        "([['David', '[email protected]'], ['David', '[email protected]']], [['David', '[email protected]']])",
+                        "([['Alex', '[email protected]'], ['Bob', '[email protected]'], ['Charlie', '[email protected]']], [['Alex', '[email protected]'], ['Bob', '[email protected]'], ['Charlie', '[email protected]']])",
+                        "([['John', '[email protected]', '[email protected]'], ['John', '[email protected]'], ['Jane', '[email protected]']], [['John', '[email protected]', '[email protected]'], ['John', '[email protected]'], ['Jane', '[email protected]']])",
+                        "([['User', '[email protected]', '[email protected]'], ['User', '[email protected]', '[email protected]'], ['User', '[email protected]', '[email protected]']], [['User', '[email protected]', '[email protected]', '[email protected]', '[email protected]']])",
+                        "([['Test', '[email protected]'], ['Test', '[email protected]'], ['Test', '[email protected]', '[email protected]']], [['Test', '[email protected]'], ['Test', '[email protected]', '[email protected]']])",
+                        "([['Name', '[email protected]', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]']], [['Name', '[email protected]', '[email protected]'], ['Name', '[email protected]', '[email protected]', '[email protected]', '[email protected]']])"
+                    ]
+                },
                 "body": "        result = run_accounts_merge(Solution, accounts)\n        assert_accounts_merge(result, expected)"
             }
         ]

leetcode_py/cli/resources/leetcode/json/problems/add_binary.json

@@ -5,12 +5,18 @@
     "problem_title": "Add Binary",
     "difficulty": "Easy",
     "topics": "Math, String, Bit Manipulation, Simulation",
-    "_tags": { "list": ["grind-75"] },
+    "_tags": {
+        "list": ["grind-75"]
+    },
     "readme_description": "Given two binary strings `a` and `b`, return *their sum as a binary string*.",
     "_readme_examples": {
         "list": [
-            { "content": "```\nInput: a = \"11\", b = \"1\"\nOutput: \"100\"\n```" },
-            { "content": "```\nInput: a = \"1010\", b = \"1011\"\nOutput: \"10101\"\n```" }
+            {
+                "content": "```\nInput: a = \"11\", b = \"1\"\nOutput: \"100\"\n```"
+            },
+            {
+                "content": "```\nInput: a = \"1010\", b = \"1011\"\nOutput: \"10101\"\n```"
+            }
         ]
     },
     "readme_constraints": "- `1 <= a.length, b.length <= 10^4`\n- `a` and `b` consist only of `'0'` or `'1'` characters.\n- Each string does not contain leading zeros except for the zero itself.",
@@ -40,15 +46,35 @@
         ]
     },
     "_test_helper_methods": {
-        "list": [{ "name": "setup_method", "parameters": "", "body": "self.solution = Solution()" }]
+        "list": [
+            {
+                "name": "setup_method",
+                "parameters": "",
+                "body": "self.solution = Solution()"
+            }
+        ]
     },
     "_test_methods": {
         "list": [
             {
                 "name": "test_add_binary",
                 "signature": "(self, a: str, b: str, expected: str)",
                 "parametrize": "a, b, expected",
-                "test_cases": "[('11', '1', '100'), ('1010', '1011', '10101'), ('0', '0', '0'), ('1', '1', '10'), ('1111', '1111', '11110'), ('1', '0', '1'), ('0', '1', '1'), ('1', '111', '1000'), ('111', '1', '1000'), ('1010', '1', '1011'), ('1111', '1', '10000')]",
+                "test_cases": {
+                    "list": [
+                        "('11', '1', '100')",
+                        "('1010', '1011', '10101')",
+                        "('0', '0', '0')",
+                        "('1', '1', '10')",
+                        "('1111', '1111', '11110')",
+                        "('1', '0', '1')",
+                        "('0', '1', '1')",
+                        "('1', '111', '1000')",
+                        "('111', '1', '1000')",
+                        "('1010', '1', '1011')",
+                        "('1111', '1', '10000')"
+                    ]
+                },
                 "body": "        result = run_add_binary(Solution, a, b)\n        assert_add_binary(result, expected)"
             }
         ]

leetcode_py/cli/resources/leetcode/json/problems/alien_dictionary.json

@@ -5,14 +5,18 @@
     "problem_title": "Alien Dictionary",
     "difficulty": "Hard",
     "topics": "Array, String, Depth-First Search, Breadth-First Search, Graph, Topological Sort",
-    "_tags": { "list": ["grind-75"] },
+    "_tags": {
+        "list": ["grind-75"]
+    },
     "readme_description": "There is a new alien language that uses the English alphabet. However, the order among the letters is unknown to you.\n\nYou are given a list of strings `words` from the alien language's dictionary, where the strings in `words` are **sorted lexicographically** by the rules of this new language.\n\nReturn *a string of the unique letters in the new alien language sorted in **lexicographically increasing order** by the new language's rules. If there is no solution, return* `\"\"`*. If there are multiple solutions, return **any of them***.",
     "_readme_examples": {
         "list": [
             {
                 "content": "```\nInput: words = [\"wrt\",\"wrf\",\"er\",\"ett\",\"rftt\"]\nOutput: \"wertf\"\n```"
             },
-            { "content": "```\nInput: words = [\"z\",\"x\"]\nOutput: \"zx\"\n```" },
+            {
+                "content": "```\nInput: words = [\"z\",\"x\"]\nOutput: \"zx\"\n```"
+            },
             {
                 "content": "```\nInput: words = [\"z\",\"x\",\"z\"]\nOutput: \"\"\nExplanation: The order is invalid, so return \"\".\n```"
             }
@@ -45,15 +49,42 @@
         ]
     },
     "_test_helper_methods": {
-        "list": [{ "name": "setup_method", "parameters": "", "body": "self.solution = Solution()" }]
+        "list": [
+            {
+                "name": "setup_method",
+                "parameters": "",
+                "body": "self.solution = Solution()"
+            }
+        ]
     },
     "_test_methods": {
         "list": [
             {
                 "name": "test_alien_order",
                 "signature": "(self, words: list[str], expected: str)",
                 "parametrize": "words, expected",
-                "test_cases": "[(['wrt', 'wrf', 'er', 'ett', 'rftt'], 'wertf'), (['z', 'x'], 'zx'), (['z', 'x', 'z'], ''), (['z', 'z'], 'z'), (['abc', 'ab'], ''), (['ab', 'adc'], 'abdc'), (['ac', 'ab', 'zc', 'zb'], 'acbz'), (['z'], 'z'), (['za', 'zb', 'ca', 'cb'], 'zcab'), (['zy', 'zx'], 'zyx'), (['a', 'b', 'ca', 'cc'], 'abc'), (['abc', 'bcd', 'cde'], 'abcde'), (['a', 'aa'], 'a'), (['ab', 'abc'], 'abc'), (['abc', 'ab'], ''), (['a', 'b', 'c', 'd'], 'abcd'), (['d', 'c', 'b', 'a'], 'dcba'), (['ac', 'ab', 'b'], 'acb')]",
+                "test_cases": {
+                    "list": [
+                        "(['wrt', 'wrf', 'er', 'ett', 'rftt'], 'wertf')",
+                        "(['z', 'x'], 'zx')",
+                        "(['z', 'x', 'z'], '')",
+                        "(['z', 'z'], 'z')",
+                        "(['abc', 'ab'], '')",
+                        "(['ab', 'adc'], 'abdc')",
+                        "(['ac', 'ab', 'zc', 'zb'], 'acbz')",
+                        "(['z'], 'z')",
+                        "(['za', 'zb', 'ca', 'cb'], 'zcab')",
+                        "(['zy', 'zx'], 'zyx')",
+                        "(['a', 'b', 'ca', 'cc'], 'abc')",
+                        "(['abc', 'bcd', 'cde'], 'abcde')",
+                        "(['a', 'aa'], 'a')",
+                        "(['ab', 'abc'], 'abc')",
+                        "(['abc', 'ab'], '')",
+                        "(['a', 'b', 'c', 'd'], 'abcd')",
+                        "(['d', 'c', 'b', 'a'], 'dcba')",
+                        "(['ac', 'ab', 'b'], 'acb')"
+                    ]
+                },
                 "body": "        result = run_alien_order(Solution, words)\n        assert_alien_order(result, expected)"
             }
         ]

leetcode_py/cli/resources/leetcode/json/problems/balanced_binary_tree.json

@@ -5,7 +5,9 @@
     "problem_title": "Balanced Binary Tree",
     "difficulty": "Easy",
     "topics": "Tree, Depth-First Search, Binary Tree",
-    "_tags": { "list": ["grind-75"] },
+    "_tags": {
+        "list": ["grind-75"]
+    },
     "readme_description": "Given a binary tree, determine if it is **height-balanced**.\n\nA height-balanced binary tree is a binary tree in which the depth of the two subtrees of every node never differs by more than one.",
     "_readme_examples": {
         "list": [
@@ -15,7 +17,9 @@
             {
                 "content": "![Example 2](https://assets.leetcode.com/uploads/2020/10/06/balance_2.jpg)\n\n```\nInput: root = [1,2,2,3,3,null,null,4,4]\nOutput: false\n```"
             },
-            { "content": "```\nInput: root = []\nOutput: true\n```" }
+            {
+                "content": "```\nInput: root = []\nOutput: true\n```"
+            }
         ]
     },
     "readme_constraints": "- The number of nodes in the tree is in the range `[0, 5000]`.\n- `-10^4 <= Node.val <= 10^4`",
@@ -45,15 +49,39 @@
         ]
     },
     "_test_helper_methods": {
-        "list": [{ "name": "setup_method", "parameters": "", "body": "self.solution = Solution()" }]
+        "list": [
+            {
+                "name": "setup_method",
+                "parameters": "",
+                "body": "self.solution = Solution()"
+            }
+        ]
     },
     "_test_methods": {
         "list": [
             {
                 "name": "test_is_balanced",
                 "signature": "(self, root_list: list[int | None], expected: bool)",
                 "parametrize": "root_list, expected",
-                "test_cases": "[([3, 9, 20, None, None, 15, 7], True), ([1, 2, 2, 3, 3, None, None, 4, 4], False), ([], True), ([1], True), ([1, 2], True), ([1, None, 2], True), ([1, 2, 3, 4], True), ([1, 2, 2, 3, None, None, 3, 4, None, None, 4], False), ([1, 2, 3], True), ([1, 2, None, 3], False), ([1, None, 2, None, 3], False), ([1, 2, 3, 4, 5, 6, 7], True), ([1, 2, 3, None, None, 4, None, None, 5], False), ([5, 1, 4, None, None, 3, 6], True), ([1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, None, None, 5, 5], True)]",
+                "test_cases": {
+                    "list": [
+                        "([3, 9, 20, None, None, 15, 7], True)",
+                        "([1, 2, 2, 3, 3, None, None, 4, 4], False)",
+                        "([], True)",
+                        "([1], True)",
+                        "([1, 2], True)",
+                        "([1, None, 2], True)",
+                        "([1, 2, 3, 4], True)",
+                        "([1, 2, 2, 3, None, None, 3, 4, None, None, 4], False)",
+                        "([1, 2, 3], True)",
+                        "([1, 2, None, 3], False)",
+                        "([1, None, 2, None, 3], False)",
+                        "([1, 2, 3, 4, 5, 6, 7], True)",
+                        "([1, 2, 3, None, None, 4, None, None, 5], False)",
+                        "([5, 1, 4, None, None, 3, 6], True)",
+                        "([1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, None, None, 5, 5], True)"
+                    ]
+                },
                 "body": "        result = run_is_balanced(Solution, root_list)\n        assert_is_balanced(result, expected)"
             }
         ]