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443bc1a33859bccebc9b8699428fb747b10ca4c7
coder/agent/unit/manager_test.go
T
Sas Swart ce627bf23f feat: implement agent socket api, client and cli (#20758) 
closes: https://github.com/coder/coder/issues/10352
closes: https://github.com/coder/internal/issues/1094
closes: https://github.com/coder/internal/issues/1095

In this pull request, we enable a new set of experimental cli commands
grouped under `coder exp sync`.
These commands allow any process acting within a coder workspace to
inform the coder agent of its requirements and execution progress. The
coder agent will then relay this information to other processes that
have subscribed.

These commands are:
```
# Check if this feature is enabled in your environment 
coder exp sync ping

# express that your unit depends on another
coder exp sync want <unit> <dependency_unit> 

# express that your unit intends to start a portion of the script that requires 
# other units to have completed first. This command blocks until all dependencies have been met
coder exp sync start <unit> 

# express that your unit has completes its work, allowing dependent units to begin their execution
coder exp sync complete <unit>
```

Example:

In order to automatically run claude code in a new workspace, it must
first have a git repository cloned. The scripts responsible for cloning
the repository and for running claude code would coordinate in the
following way:

```bash
# Script A: Claude code

# Inform the agent that the claude script wants the git script.
# That is, the git script must have completed before the claude script can begin its execution
coder exp sync want claude git

# Inform the agent that we would now like to begin execution of claude.
# This command will block until the git script (and any other defined dependencies)
# have completed
coder exp sync start claude

# Now we run claude code and any other commands we need
claude ...

# Once our script has completed, we inform the agent, so that any scripts that depend on this one
# may begin their execution

coder exp sync complete claude
```

```bash
# Script B: Git

# Because the git script does not have any dependencies, we can simply inform the agent that we 
# intend to start
coder exp sync start git

git clone ssh://git@github.com/coder/coder

# Once the repository have been cloned, we inform the agent that this script is complete, so that
# scripts that depend on it may begin their execution.
coder exp sync complete git
```

Notes:
* Unit names (ie. `claude` and `git`) given as input to the sync
commands are arbitrary strings. You do not have to conform to specific
identifiers. We recommend naming your scripts descriptively, but
succinctly.
* Scripts unit names should be well documented. Other scripts will need
to know the names you've chosen in order to depend on yours. Therefore,
you

---------

Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>
2025-11-28 08:33:50 +02:00

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package unit_test
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/coder/coder/v2/agent/unit"
)
const (
unitA unit.ID = "serviceA"
unitB unit.ID = "serviceB"
unitC unit.ID = "serviceC"
unitD unit.ID = "serviceD"
)
func TestManager_UnitValidation(t *testing.T) {
t.Parallel()
t.Run("Empty Unit Name", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
err := manager.Register("")
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
err = manager.AddDependency("", unitA, unit.StatusStarted)
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
err = manager.AddDependency(unitA, "", unit.StatusStarted)
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
dependencies, err := manager.GetAllDependencies("")
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
require.Len(t, dependencies, 0)
unmetDependencies, err := manager.GetUnmetDependencies("")
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
require.Len(t, unmetDependencies, 0)
err = manager.UpdateStatus("", unit.StatusStarted)
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
isReady, err := manager.IsReady("")
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
require.False(t, isReady)
u, err := manager.Unit("")
require.ErrorIs(t, err, unit.ErrUnitIDRequired)
assert.Equal(t, unit.Unit{}, u)
})
}
func TestManager_Register(t *testing.T) {
t.Parallel()
t.Run("RegisterNewUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: a unit is registered
err := manager.Register(unitA)
require.NoError(t, err)
// Then: the unit should be ready (no dependencies)
u, err := manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unitA, u.ID())
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("RegisterDuplicateUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: a unit is registered
err := manager.Register(unitA)
require.NoError(t, err)
// Newly registered units have StatusPending. We update the unit status to StatusStarted,
// so we can later assert that it is not overwritten back to StatusPending by the second
// register call
manager.UpdateStatus(unitA, unit.StatusStarted)
// When: the unit is registered again
err = manager.Register(unitA)
// Then: a descriptive error should be returned
require.ErrorIs(t, err, unit.ErrUnitAlreadyRegistered)
// Then: the unit status should not be overwritten
u, err := manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusStarted, u.Status())
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("RegisterMultipleUnits", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: multiple units are registered
unitIDs := []unit.ID{unitA, unitB, unitC}
for _, unit := range unitIDs {
err := manager.Register(unit)
require.NoError(t, err)
}
// Then: all units should be ready initially
for _, unitID := range unitIDs {
u, err := manager.Unit(unitID)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err := manager.IsReady(unitID)
require.NoError(t, err)
assert.True(t, isReady)
}
})
}
func TestManager_AddDependency(t *testing.T) {
t.Parallel()
t.Run("AddDependencyBetweenRegisteredUnits", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: units A and B are registered
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Given: Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should not be ready (depends on B)
u, err := manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Then: Unit B should still be ready (no dependencies)
u, err = manager.Unit(unitB)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.True(t, isReady)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should be ready, because its dependency is now in the desired state.
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
// When: Unit B is stopped
err = manager.UpdateStatus(unitB, unit.StatusPending)
require.NoError(t, err)
// Then: Unit A should no longer be ready, because its dependency is not in the desired state.
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
})
t.Run("AddDependencyByAnUnregisteredDependentUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given Unit B is registered
err := manager.Register(unitB)
require.NoError(t, err)
// Given Unit A depends on Unit B being started
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
// Then: a descriptive error communicates that the dependency cannot be added
// because the dependent unit must be registered first.
require.ErrorIs(t, err, unit.ErrUnitNotFound)
})
t.Run("AddDependencyOnAnUnregisteredUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given unit A is registered
err := manager.Register(unitA)
require.NoError(t, err)
// Given Unit B is not yet registered
// And Unit A depends on Unit B being started
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: The dependency should be visible in Unit A's status
dependencies, err := manager.GetAllDependencies(unitA)
require.NoError(t, err)
require.Len(t, dependencies, 1)
assert.Equal(t, unitB, dependencies[0].DependsOn)
assert.Equal(t, unit.StatusStarted, dependencies[0].RequiredStatus)
assert.False(t, dependencies[0].IsSatisfied)
u, err := manager.Unit(unitB)
require.NoError(t, err)
assert.Equal(t, unit.StatusNotRegistered, u.Status())
// Then: Unit A should not be ready, because it depends on Unit B
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// When: Unit B is registered
err = manager.Register(unitB)
require.NoError(t, err)
// Then: Unit A should still not be ready.
// Unit B is not registered, but it has not been started as required by the dependency.
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should be ready, because its dependency is now in the desired state.
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("AddDependencyCreatesACyclicDependency", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register units
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
err = manager.Register(unitC)
require.NoError(t, err)
err = manager.Register(unitD)
require.NoError(t, err)
// A depends on B
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// B depends on C
err = manager.AddDependency(unitB, unitC, unit.StatusStarted)
require.NoError(t, err)
// C depends on D
err = manager.AddDependency(unitC, unitD, unit.StatusStarted)
require.NoError(t, err)
// Try to make D depend on A (creates indirect cycle)
err = manager.AddDependency(unitD, unitA, unit.StatusStarted)
require.ErrorIs(t, err, unit.ErrCycleDetected)
})
t.Run("UpdatingADependency", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given units A and B are registered
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Given Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// When: The dependency is updated to unit.StatusComplete
err = manager.AddDependency(unitA, unitB, unit.StatusComplete)
require.NoError(t, err)
// Then: Unit A should only have one dependency, and it should be unit.StatusComplete
dependencies, err := manager.GetAllDependencies(unitA)
require.NoError(t, err)
require.Len(t, dependencies, 1)
assert.Equal(t, unit.StatusComplete, dependencies[0].RequiredStatus)
})
}
func TestManager_UpdateStatus(t *testing.T) {
t.Parallel()
t.Run("UpdateStatusTriggersReadinessRecalculation", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given units A and B are registered
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Given Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should not be ready (depends on B)
u, err := manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should be ready, because its dependency is now in the desired state.
u, err = manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("UpdateStatusWithUnregisteredUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given Unit A is not registered
// When: Unit A is updated to unit.StatusStarted
err := manager.UpdateStatus(unitA, unit.StatusStarted)
// Then: a descriptive error communicates that the unit must be registered first.
require.ErrorIs(t, err, unit.ErrUnitNotFound)
})
t.Run("LinearChainDependencies", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given units A, B, and C are registered
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
err = manager.Register(unitC)
require.NoError(t, err)
// Create chain: A depends on B being "started", B depends on C being "completed"
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
err = manager.AddDependency(unitB, unitC, unit.StatusComplete)
require.NoError(t, err)
// Then: only Unit C should be ready (no dependencies)
u, err := manager.Unit(unitC)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err := manager.IsReady(unitC)
require.NoError(t, err)
assert.True(t, isReady)
u, err = manager.Unit(unitB)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.False(t, isReady)
u, err = manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// When: Unit C is completed
err = manager.UpdateStatus(unitC, unit.StatusComplete)
require.NoError(t, err)
// Then: Unit B should be ready, because its dependency is now in the desired state.
u, err = manager.Unit(unitB)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.True(t, isReady)
u, err = manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
u, err = manager.Unit(unitB)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.True(t, isReady)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should be ready, because its dependency is now in the desired state.
u, err = manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusPending, u.Status())
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
}
func TestManager_GetUnmetDependencies(t *testing.T) {
t.Parallel()
t.Run("GetUnmetDependenciesForUnitWithNoDependencies", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: Unit A is registered
err := manager.Register(unitA)
require.NoError(t, err)
// Given: Unit A has no dependencies
// Then: Unit A should have no unmet dependencies
unmet, err := manager.GetUnmetDependencies(unitA)
require.NoError(t, err)
assert.Empty(t, unmet)
})
t.Run("GetUnmetDependenciesForUnitWithUnsatisfiedDependencies", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Given: Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
unmet, err := manager.GetUnmetDependencies(unitA)
require.NoError(t, err)
require.Len(t, unmet, 1)
assert.Equal(t, unitA, unmet[0].Unit)
assert.Equal(t, unitB, unmet[0].DependsOn)
assert.Equal(t, unit.StatusStarted, unmet[0].RequiredStatus)
assert.False(t, unmet[0].IsSatisfied)
})
t.Run("GetUnmetDependenciesForUnitWithSatisfiedDependencies", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: Unit A and Unit B are registered
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Given: Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should have no unmet dependencies
unmet, err := manager.GetUnmetDependencies(unitA)
require.NoError(t, err)
assert.Empty(t, unmet)
})
t.Run("GetUnmetDependenciesForUnregisteredUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// When: Unit A is requested
unmet, err := manager.GetUnmetDependencies(unitA)
// Then: a descriptive error communicates that the unit must be registered first.
require.ErrorIs(t, err, unit.ErrUnitNotFound)
assert.Nil(t, unmet)
})
}
func TestManager_MultipleDependencies(t *testing.T) {
t.Parallel()
t.Run("UnitWithMultipleDependencies", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register all units
units := []unit.ID{unitA, unitB, unitC, unitD}
for _, unit := range units {
err := manager.Register(unit)
require.NoError(t, err)
}
// A depends on B being unit.StatusStarted AND C being "started"
err := manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
err = manager.AddDependency(unitA, unitC, unit.StatusStarted)
require.NoError(t, err)
// A should not be ready (depends on both B and C)
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Update B to unit.StatusStarted - A should still not be ready (needs C too)
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Update C to "started" - A should now be ready
err = manager.UpdateStatus(unitC, unit.StatusStarted)
require.NoError(t, err)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("ComplexDependencyChain", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register all units
units := []unit.ID{unitA, unitB, unitC, unitD}
for _, unit := range units {
err := manager.Register(unit)
require.NoError(t, err)
}
// Create complex dependency graph:
// A depends on B being unit.StatusStarted AND C being "started"
err := manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
err = manager.AddDependency(unitA, unitC, unit.StatusStarted)
require.NoError(t, err)
// B depends on D being "completed"
err = manager.AddDependency(unitB, unitD, unit.StatusComplete)
require.NoError(t, err)
// C depends on D being "completed"
err = manager.AddDependency(unitC, unitD, unit.StatusComplete)
require.NoError(t, err)
// Initially only D is ready
isReady, err := manager.IsReady(unitD)
require.NoError(t, err)
assert.True(t, isReady)
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.False(t, isReady)
isReady, err = manager.IsReady(unitC)
require.NoError(t, err)
assert.False(t, isReady)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Update D to "completed" - B and C should become ready
err = manager.UpdateStatus(unitD, unit.StatusComplete)
require.NoError(t, err)
isReady, err = manager.IsReady(unitB)
require.NoError(t, err)
assert.True(t, isReady)
isReady, err = manager.IsReady(unitC)
require.NoError(t, err)
assert.True(t, isReady)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Update B to unit.StatusStarted - A should still not be ready (needs C)
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// Update C to "started" - A should now be ready
err = manager.UpdateStatus(unitC, unit.StatusStarted)
require.NoError(t, err)
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
t.Run("DifferentStatusTypes", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register units
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
err = manager.Register(unitC)
require.NoError(t, err)
// Given: Unit A depends on Unit B being unit.StatusStarted
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
// Given: Unit A depends on Unit C being "completed"
err = manager.AddDependency(unitA, unitC, unit.StatusComplete)
require.NoError(t, err)
// When: Unit B is started
err = manager.UpdateStatus(unitB, unit.StatusStarted)
require.NoError(t, err)
// Then: Unit A should not be ready, because only one of its dependencies is in the desired state.
// It still requires Unit C to be completed.
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.False(t, isReady)
// When: Unit C is completed
err = manager.UpdateStatus(unitC, unit.StatusComplete)
require.NoError(t, err)
// Then: Unit A should be ready, because both of its dependencies are in the desired state.
isReady, err = manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
}
func TestManager_IsReady(t *testing.T) {
t.Parallel()
t.Run("IsReadyWithUnregisteredUnit", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Given: a unit is not registered
u, err := manager.Unit(unitA)
require.NoError(t, err)
assert.Equal(t, unit.StatusNotRegistered, u.Status())
// Then: the unit is not ready
isReady, err := manager.IsReady(unitA)
require.NoError(t, err)
assert.True(t, isReady)
})
}
func TestManager_ToDOT(t *testing.T) {
t.Parallel()
t.Run("ExportSimpleGraph", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register units
err := manager.Register(unitA)
require.NoError(t, err)
err = manager.Register(unitB)
require.NoError(t, err)
// Add dependency
err = manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
dot, err := manager.ExportDOT("test")
require.NoError(t, err)
assert.NotEmpty(t, dot)
assert.Contains(t, dot, "digraph")
})
t.Run("ExportComplexGraph", func(t *testing.T) {
t.Parallel()
manager := unit.NewManager()
// Register all units
units := []unit.ID{unitA, unitB, unitC, unitD}
for _, unit := range units {
err := manager.Register(unit)
require.NoError(t, err)
}
// Create complex dependency graph
// A depends on B and C, B depends on D, C depends on D
err := manager.AddDependency(unitA, unitB, unit.StatusStarted)
require.NoError(t, err)
err = manager.AddDependency(unitA, unitC, unit.StatusStarted)
require.NoError(t, err)
err = manager.AddDependency(unitB, unitD, unit.StatusComplete)
require.NoError(t, err)
err = manager.AddDependency(unitC, unitD, unit.StatusComplete)
require.NoError(t, err)
dot, err := manager.ExportDOT("complex")
require.NoError(t, err)
assert.NotEmpty(t, dot)
assert.Contains(t, dot, "digraph")
})
}
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