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| 1 | +"""Tests for JS/TS export helper functions with pre-read source content. |
| 2 | +
|
| 3 | +Verifies that _is_js_ts_function_exported and _is_js_ts_function_exists_but_not_exported |
| 4 | +work correctly both with and without pre-read source content passed in. |
| 5 | +""" |
| 6 | + |
| 7 | +from pathlib import Path |
| 8 | + |
| 9 | +import pytest |
| 10 | + |
| 11 | +from codeflash.discovery.functions_to_optimize import ( |
| 12 | + _is_js_ts_function_exists_but_not_exported, |
| 13 | + _is_js_ts_function_exported, |
| 14 | +) |
| 15 | + |
| 16 | + |
| 17 | +class TestIsJsTsFunctionExported: |
| 18 | + def test_named_export_detected(self, tmp_path: Path) -> None: |
| 19 | + js_file = tmp_path / "module.js" |
| 20 | + js_file.write_text( |
| 21 | + "export function add(a, b) {\n return a + b;\n}\n", |
| 22 | + encoding="utf-8", |
| 23 | + ) |
| 24 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "add") |
| 25 | + assert is_exported is True |
| 26 | + assert export_name == "add" |
| 27 | + |
| 28 | + def test_named_export_with_source_param(self, tmp_path: Path) -> None: |
| 29 | + js_file = tmp_path / "module.js" |
| 30 | + content = "export function add(a, b) {\n return a + b;\n}\n" |
| 31 | + js_file.write_text(content, encoding="utf-8") |
| 32 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "add", source=content) |
| 33 | + assert is_exported is True |
| 34 | + assert export_name == "add" |
| 35 | + |
| 36 | + def test_default_export_detected(self, tmp_path: Path) -> None: |
| 37 | + js_file = tmp_path / "module.js" |
| 38 | + content = "function compute(x) {\n return x * 2;\n}\nexport default compute;\n" |
| 39 | + js_file.write_text(content, encoding="utf-8") |
| 40 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "compute", source=content) |
| 41 | + assert is_exported is True |
| 42 | + assert export_name == "default" |
| 43 | + |
| 44 | + def test_non_exported_function(self, tmp_path: Path) -> None: |
| 45 | + js_file = tmp_path / "module.js" |
| 46 | + content = "function helper(x) {\n return x + 1;\n}\n\nexport function main() {\n return helper(5);\n}\n" |
| 47 | + js_file.write_text(content, encoding="utf-8") |
| 48 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "helper", source=content) |
| 49 | + assert is_exported is False |
| 50 | + assert export_name is None |
| 51 | + |
| 52 | + def test_separate_export_clause(self, tmp_path: Path) -> None: |
| 53 | + js_file = tmp_path / "module.js" |
| 54 | + content = "function process(data) {\n return data;\n}\n\nexport { process };\n" |
| 55 | + js_file.write_text(content, encoding="utf-8") |
| 56 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "process", source=content) |
| 57 | + assert is_exported is True |
| 58 | + assert export_name == "process" |
| 59 | + |
| 60 | + def test_aliased_export(self, tmp_path: Path) -> None: |
| 61 | + js_file = tmp_path / "module.js" |
| 62 | + content = "function internalName(x) {\n return x;\n}\n\nexport { internalName as publicName };\n" |
| 63 | + js_file.write_text(content, encoding="utf-8") |
| 64 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "internalName", source=content) |
| 65 | + assert is_exported is True |
| 66 | + assert export_name == "publicName" |
| 67 | + |
| 68 | + def test_typescript_export(self, tmp_path: Path) -> None: |
| 69 | + ts_file = tmp_path / "module.ts" |
| 70 | + content = "export function greet(name: string): string {\n return `Hello, ${name}`;\n}\n" |
| 71 | + ts_file.write_text(content, encoding="utf-8") |
| 72 | + is_exported, export_name = _is_js_ts_function_exported(ts_file, "greet", source=content) |
| 73 | + assert is_exported is True |
| 74 | + assert export_name == "greet" |
| 75 | + |
| 76 | + def test_fallback_reads_from_disk_when_source_is_none(self, tmp_path: Path) -> None: |
| 77 | + js_file = tmp_path / "module.js" |
| 78 | + js_file.write_text( |
| 79 | + "export function fromDisk(x) {\n return x;\n}\n", |
| 80 | + encoding="utf-8", |
| 81 | + ) |
| 82 | + is_exported, export_name = _is_js_ts_function_exported(js_file, "fromDisk", source=None) |
| 83 | + assert is_exported is True |
| 84 | + assert export_name == "fromDisk" |
| 85 | + |
| 86 | + |
| 87 | +class TestIsJsTsFunctionExistsButNotExported: |
| 88 | + def test_unexported_function_detected(self, tmp_path: Path) -> None: |
| 89 | + js_file = tmp_path / "module.js" |
| 90 | + content = "function secret(x) {\n return x * 2;\n}\n\nexport function pub() {\n return 1;\n}\n" |
| 91 | + js_file.write_text(content, encoding="utf-8") |
| 92 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "secret", source=content) is True |
| 93 | + |
| 94 | + def test_exported_function_returns_false(self, tmp_path: Path) -> None: |
| 95 | + js_file = tmp_path / "module.js" |
| 96 | + content = "export function pub(x) {\n return x;\n}\n" |
| 97 | + js_file.write_text(content, encoding="utf-8") |
| 98 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "pub", source=content) is False |
| 99 | + |
| 100 | + def test_nonexistent_function_returns_false(self, tmp_path: Path) -> None: |
| 101 | + js_file = tmp_path / "module.js" |
| 102 | + content = "export function exists() {\n return 1;\n}\n" |
| 103 | + js_file.write_text(content, encoding="utf-8") |
| 104 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "nonexistent", source=content) is False |
| 105 | + |
| 106 | + def test_fallback_reads_from_disk(self, tmp_path: Path) -> None: |
| 107 | + js_file = tmp_path / "module.js" |
| 108 | + js_file.write_text( |
| 109 | + "function localOnly() {\n return 42;\n}\n", |
| 110 | + encoding="utf-8", |
| 111 | + ) |
| 112 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "localOnly", source=None) is True |
| 113 | + |
| 114 | + def test_typescript_unexported(self, tmp_path: Path) -> None: |
| 115 | + ts_file = tmp_path / "utils.ts" |
| 116 | + content = ( |
| 117 | + "function internal(x: number): number {\n return x;\n}\n\n" |
| 118 | + "export function external(y: number): number {\n return y + 1;\n}\n" |
| 119 | + ) |
| 120 | + ts_file.write_text(content, encoding="utf-8") |
| 121 | + assert _is_js_ts_function_exists_but_not_exported(ts_file, "internal", source=content) is True |
| 122 | + assert _is_js_ts_function_exists_but_not_exported(ts_file, "external", source=content) is False |
| 123 | + |
| 124 | + def test_arrow_function_unexported(self, tmp_path: Path) -> None: |
| 125 | + js_file = tmp_path / "arrows.js" |
| 126 | + content = "const helper = (x) => {\n return x + 1;\n};\n\nexport const main = () => {\n return 2;\n};\n" |
| 127 | + js_file.write_text(content, encoding="utf-8") |
| 128 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "helper", source=content) is True |
| 129 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "main", source=content) is False |
| 130 | + |
| 131 | + def test_source_param_matches_disk_read(self, tmp_path: Path) -> None: |
| 132 | + js_file = tmp_path / "consistent.js" |
| 133 | + content = "function local() {\n return 'hi';\n}\n\nexport function exported() {\n return 'bye';\n}\n" |
| 134 | + js_file.write_text(content, encoding="utf-8") |
| 135 | + # Results should be identical whether source is passed or read from disk |
| 136 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "local", source=content) == ( |
| 137 | + _is_js_ts_function_exists_but_not_exported(js_file, "local", source=None) |
| 138 | + ) |
| 139 | + assert _is_js_ts_function_exists_but_not_exported(js_file, "exported", source=content) == ( |
| 140 | + _is_js_ts_function_exists_but_not_exported(js_file, "exported", source=None) |
| 141 | + ) |
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