test(agentcompat): add integration scenarios

Co-authored-by: naiba/CloudCode <hi+cloudcode@nai.ba>

integration/agentcompat/internal/scenario/reconnect_test.go

@@ -0,0 +1,84 @@
+//go:build linux && agentcompat
+
+package scenario
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestReconnectObservation_RejectsNonIncreasingGenerations(t *testing.T) {
+	// Given
+	observation := ReconnectObservation{OldGeneration: 4, NewGeneration: 4}
+
+	// When
+	err := observation.Validate()
+
+	// Then
+	require.Error(t, err)
+}
+
+func TestReconnectObservation_RequiresUniqueCompleteTaskIDs(t *testing.T) {
+	// Given
+	observation := ReconnectObservation{
+		OldGeneration: 2,
+		NewGeneration: 3,
+		DisconnectAt:  time.Unix(10, 0),
+		ReconnectAt:   time.Unix(11, 0),
+		TaskIDs:       []uint64{7, 7},
+		ResultIDs:     []uint64{7},
+	}
+
+	// When
+	err := observation.Validate()
+
+	// Then
+	require.Error(t, err)
+}
+
+func TestReconnectObservation_RejectsNonAdjacentDuplicateTaskIDs(t *testing.T) {
+	// Given
+	observation := ReconnectObservation{
+		ServerID:       7,
+		UUID:           "00000000-0000-0000-0000-000000000111",
+		OldGeneration:  2,
+		NewGeneration:  3,
+		DisconnectAt:   time.Unix(10, 0),
+		ReconnectAt:    time.Unix(11, 0),
+		TaskIDs:        []uint64{7, 8, 7},
+		ResultIDs:      []uint64{7, 8, 7},
+		PostReconnect:  true,
+		AgentRestarted: true,
+	}
+
+	// When
+	err := observation.Validate()
+
+	// Then
+	require.Error(t, err)
+}
+
+func TestReconnectObservation_RecordsReconnectInterval(t *testing.T) {
+	// Given
+	observation := ReconnectObservation{
+		ServerID:       7,
+		UUID:           "00000000-0000-0000-0000-000000000111",
+		OldGeneration:  2,
+		NewGeneration:  3,
+		DisconnectAt:   time.Unix(10, 0),
+		ReconnectAt:    time.Unix(11, 0),
+		TaskIDs:        []uint64{7},
+		ResultIDs:      []uint64{7},
+		PostReconnect:  true,
+		AgentRestarted: true,
+	}
+
+	// When
+	err := observation.Validate()
+
+	// Then
+	require.NoError(t, err)
+	require.Equal(t, time.Second, observation.ReconnectInterval())
+}