diff --git a/tests/unit/test_ora_loop.py b/tests/unit/test_ora_loop.py
new file mode 100644
index 000000000..26ee1c58a
--- /dev/null
+++ b/tests/unit/test_ora_loop.py
@@ -0,0 +1,152 @@
+"""Tests unitaires pour la boucle ORA (observe→raisonne→agit)."""
+
+import pytest
+from unittest.mock import MagicMock, patch
+from core.execution.observe_reason_act import (
+    ORALoop, Observation, Decision, VerificationResult, LoopResult
+)
+
+
+class TestORALoopInit:
+    def test_default_params(self):
+        loop = ORALoop()
+        assert loop.max_retries == 2
+        assert loop.max_steps == 50
+        assert loop.verify_level == 'auto'
+
+    def test_custom_params(self):
+        loop = ORALoop(max_retries=5, max_steps=10, verify_level='phash')
+        assert loop.max_retries == 5
+        assert loop.max_steps == 10
+        assert loop.verify_level == 'phash'
+
+
+class TestDecision:
+    def test_click_decision(self):
+        d = Decision(
+            action='click', target='Enregistrer', value='',
+            reasoning='Bouton visible', expected_after='Fichier sauvegardé',
+            confidence=0.95
+        )
+        assert d.action == 'click'
+        assert d.done == False
+
+    def test_done_decision(self):
+        d = Decision(
+            action='done', target='', value='',
+            reasoning='Objectif atteint', expected_after='',
+            confidence=1.0, done=True
+        )
+        assert d.done == True
+
+
+class TestReasonWorkflowStep:
+    def test_click_anchor_step(self):
+        loop = ORALoop()
+        obs = MagicMock()
+        step = {
+            'action_type': 'click_anchor',
+            'label': 'Clic sur Demo',
+            'visual_anchor': {
+                'target_text': 'Demo',
+                'screenshot': 'base64data',
+                'bounding_box': {'x': 100, 'y': 200, 'width': 50, 'height': 30}
+            }
+        }
+        decision = loop.reason_workflow_step(step, obs)
+        assert decision.action == 'click'
+        assert decision.target == 'Demo'
+
+    def test_type_text_step(self):
+        loop = ORALoop()
+        obs = MagicMock()
+        step = {
+            'action_type': 'type_text',
+            'label': 'Saisir URL',
+            'parameters': {'text': 'https://youtube.com'}
+        }
+        decision = loop.reason_workflow_step(step, obs)
+        assert decision.action == 'type'
+        assert decision.value == 'https://youtube.com'
+
+    def test_keyboard_shortcut_step(self):
+        loop = ORALoop()
+        obs = MagicMock()
+        step = {
+            'action_type': 'keyboard_shortcut',
+            'label': 'Ctrl+S',
+            'parameters': {'keys': ['ctrl', 's']}
+        }
+        decision = loop.reason_workflow_step(step, obs)
+        assert decision.action == 'hotkey'
+
+    def test_wait_step(self):
+        loop = ORALoop()
+        obs = MagicMock()
+        step = {
+            'action_type': 'wait_for_anchor',
+            'label': 'Attente',
+            'parameters': {'timeout_ms': 3000}
+        }
+        decision = loop.reason_workflow_step(step, obs)
+        assert decision.action == 'wait'
+
+    def test_unknown_step_passthrough(self):
+        loop = ORALoop()
+        obs = MagicMock()
+        step = {'action_type': 'custom_action', 'label': 'Action custom'}
+        decision = loop.reason_workflow_step(step, obs)
+        assert decision.action == 'passthrough'
+
+
+class TestVerify:
+    def test_verify_none_mode(self):
+        loop = ORALoop(verify_level='none')
+        pre = MagicMock()
+        post = MagicMock()
+        decision = Decision('click', 'btn', '', '', '', 0.9)
+        result = loop.verify(pre, post, decision)
+        assert result.success == True
+
+    def test_verify_wait_action(self):
+        loop = ORALoop(verify_level='phash')
+        pre = MagicMock()
+        post = MagicMock()
+        decision = Decision('wait', '', '', '', '', 0.9)
+        result = loop.verify(pre, post, decision)
+        assert result.success == True
+
+    def test_verify_done_action(self):
+        loop = ORALoop()
+        pre = MagicMock()
+        post = MagicMock()
+        decision = Decision('done', '', '', '', '', 1.0, done=True)
+        result = loop.verify(pre, post, decision)
+        assert result.success == True
+
+
+class TestRunWorkflow:
+    def test_empty_workflow(self):
+        loop = ORALoop()
+        result = loop.run_workflow([])
+        assert result.success == True
+        assert result.steps_completed == 0
+
+    def test_too_many_steps(self):
+        loop = ORALoop(max_steps=5)
+        steps = [{'action_type': 'wait', 'parameters': {}} for _ in range(10)]
+        result = loop.run_workflow(steps)
+        assert result.success == False
+        assert 'max_steps' in result.reason.lower() or result.steps_completed <= 5
+
+
+class TestRunInstruction:
+    def test_has_method(self):
+        loop = ORALoop()
+        assert hasattr(loop, 'run_instruction')
+        assert callable(loop.run_instruction)
+
+    def test_has_reason_instruction(self):
+        loop = ORALoop()
+        assert hasattr(loop, 'reason_instruction')
+        assert callable(loop.reason_instruction)