1 files changed, 64 insertions, 0 deletions
diff --git a/tests/builder/flags.test.py b/tests/builder/flags.test.py
new file mode 100644
index 0000000..ad177c0
--- /dev/null
+++ b/tests/builder/flags.test.py
@@ -0,0 +1,64 @@
+"""Tests for the flag keyword arguments on :meth:`TerminalsMixin.to_regex`."""
+
+import re
+
+from edify import Pattern, RegexBuilder
+
+
+def test_no_kwargs_uses_only_the_chain_flag_snapshot():
+    compiled = RegexBuilder().string("hi").to_regex()
+    assert compiled.compiled.flags & re.I == 0
+
+
+def test_ignore_case_kwarg_enables_the_ignore_case_flag():
+    compiled = RegexBuilder().string("hi").to_regex(ignore_case=True)
+    assert compiled.compiled.flags & re.I == re.I
+
+
+def test_multiline_kwarg_enables_the_multiline_flag():
+    compiled = RegexBuilder().string("hi").to_regex(multiline=True)
+    assert compiled.compiled.flags & re.M == re.M
+
+
+def test_dotall_kwarg_enables_the_dotall_flag():
+    compiled = RegexBuilder().string("hi").to_regex(dotall=True)
+    assert compiled.compiled.flags & re.S == re.S
+
+
+def test_ascii_only_kwarg_enables_the_ascii_flag():
+    compiled = RegexBuilder().string("hi").to_regex(ascii_only=True)
+    assert compiled.compiled.flags & re.A == re.A
+
+
+def test_verbose_kwarg_enables_the_verbose_flag():
+    compiled = RegexBuilder().string("hi").to_regex(verbose=True)
+    assert compiled.compiled.flags & re.X == re.X
+
+
+def test_debug_kwarg_enables_the_debug_flag(capsys):
+    RegexBuilder().string("hi").to_regex(debug=True)
+    captured = capsys.readouterr()
+    assert captured.out != ""
+
+
+def test_kwargs_or_merge_with_chain_flags():
+    compiled = RegexBuilder().ignore_case().string("hi").to_regex(multiline=True)
+    assert compiled.compiled.flags & re.I == re.I
+    assert compiled.compiled.flags & re.M == re.M
+
+
+def test_kwargs_never_turn_off_a_chain_flag():
+    compiled = RegexBuilder().ignore_case().string("hi").to_regex(ignore_case=False)
+    assert compiled.compiled.flags & re.I == re.I
+
+
+def test_kwargs_work_on_pattern_too():
+    compiled = Pattern().string("hi").to_regex(ignore_case=True)
+    assert compiled.compiled.flags & re.I == re.I
+
+
+def test_multiple_kwargs_combine():
+    compiled = RegexBuilder().string("hi").to_regex(ignore_case=True, multiline=True, dotall=True)
+    assert compiled.compiled.flags & re.I == re.I
+    assert compiled.compiled.flags & re.M == re.M
+    assert compiled.compiled.flags & re.S == re.S