test/cli: added tests for the rules files [skip ci]

Author: firewave

test/cli/rules_test.py

@@ -0,0 +1,93 @@
+import os
+
+from testutils import cppcheck
+
+__script_dir = os.path.dirname(os.path.abspath(__file__))
+__root_dir = os.path.abspath(os.path.join(__script_dir, '..', '..'))
+__rules_dir = os.path.join(__root_dir, 'rules')
+
+
+def test_empty_catch_block(tmp_path):
+    test_file = tmp_path / 'test.cpp'
+    with open(test_file, 'wt') as f:
+        f.write("""
+void f()
+{
+    try
+    {
+    }
+    catch (...)
+    {
+    }
+}
+""")
+
+    rule_file = os.path.join(__rules_dir, 'empty-catch-block.xml')
+    args = [
+        '--rule={}'.format(rule_file),
+        str(test_file)
+    ]
+    ret, stdout, stderr = cppcheck(args)
+    assert ret == 0
+    assert stdout.splitlines() == [
+        'Checking {} ...'.format(test_file),
+        'Processing rule: {}'.format(rule_file)
+    ]
+    assert stderr == ''
+    # TODO: needs to report error
+
+
+def test_show_all_defines(tmp_path):
+    test_file = tmp_path / 'test.cpp'
+    with open(test_file, 'wt') as f:
+        f.write("""
+#define DEF_1
+
+void f()
+{
+}
+""")
+
+    rule_file = os.path.join(__rules_dir, 'show-all-defines.rule')
+    args = [
+        '-DDEF_1',
+        '--rule={}'.format(rule_file),
+        str(test_file)
+    ]
+    ret, stdout, stderr = cppcheck(args)
+    assert ret == 0
+    assert stdout.splitlines() == [
+        'Checking {} ...'.format(test_file),
+        'Checking {}: DEF_1=1...'.format(test_file),
+        'Processing rule: {}'.format(rule_file)  # requires actual code to be called
+    ]
+    assert stderr == ''
+    # TODO: does not report anything
+
+
+def test_stl(tmp_path):
+    test_file = tmp_path / 'test.cpp'
+    with open(test_file, 'wt') as f:
+        f.write("""
+void f()
+{
+    std::string s;
+    if (s.find("t") == 17)
+    {
+    }
+}
+""")
+
+    rule_file = os.path.join(__rules_dir, 'stl.xml')
+    args = [
+        '--rule={}'.format(rule_file),
+        str(test_file)
+    ]
+    ret, stdout, stderr = cppcheck(args)
+    assert ret == 0
+    assert stdout.splitlines() == [
+        'Checking {} ...'.format(test_file),
+        'Processing rule: {}'.format(rule_file)
+    ]
+    assert stderr == ''
+    # TODO: needs to report error