First implementation of bindings

tests/testclient/test_testable_range.py

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+from dataclasses import dataclass
+
+import pytest
+from fasthtml.fastapp import fast_app
+
+from myfasthtml.test.testclient import MyTestClient, TestableRange
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@pytest.fixture
+def test_app():
+  test_app, rt = fast_app(default_hdrs=False)
+  return test_app
+
+
+@pytest.fixture
+def rt(test_app):
+  return test_app.route
+
+
+@pytest.fixture
+def test_client(test_app):
+  return MyTestClient(test_app)
+
+
+def test_i_can_read_range(test_client):
+  html = '''<input type="range" name="range_name" min="0" max="100" step="10" value="50" />'''
+  
+  input_elt = TestableRange(test_client, html)
+  
+  assert input_elt.name == "range_name"
+  assert input_elt.value == 50
+  assert input_elt.min_value == 0
+  assert input_elt.max_value == 100
+  assert input_elt.step == 10
+
+
+@pytest.mark.parametrize("value, expected", [
+    (30, 30),
+    (24, 20),  # step 10
+    (-10, 0),  # min 0
+    (110, 100),  # max 100
+])
+def test_i_can_set_value(test_client, value, expected):
+  html = '''<input type="range" name="range_name" min="0" max="100" step="10" value="50" />'''
+  
+  input_elt = TestableRange(test_client, html)
+  
+  input_elt.set(value)
+  assert input_elt.value == expected
+
+
+def test_i_can_increase_value(test_client):
+  html = '''<input type="range" name="range_name" min="0" max="100" step="10" value="50" />'''
+  
+  input_elt = TestableRange(test_client, html)
+  
+  input_elt.increase()
+  assert input_elt.value == 60
+
+
+def test_i_can_decrease_value(test_client):
+  html = '''<input type="range" name="range_name" min="0" max="100" step="10" value="50" />'''
+  
+  input_elt = TestableRange(test_client, html)
+  
+  input_elt.decrease()
+  assert input_elt.value == 40