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Add support for multiple Docker hosts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| package platform | ||
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||
| import ( | ||
| "context" | ||
| "errors" | ||
| "strings" | ||
| "testing" | ||
|
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| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/mock" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
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| var _ Grapher = (*MockGrapher)(nil) | ||
|
|
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| type MockGrapher struct { | ||
| mock.Mock | ||
| } | ||
|
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| // Graph implements Grapher. | ||
| func (m *MockGrapher) Graph(ctx context.Context) (Graph, error) { | ||
| args := m.Called(ctx) | ||
| return args.Get(0).(Graph), args.Error(1) | ||
| } | ||
|
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| var _ Node = (*TestNode)(nil) | ||
|
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| type TestNode struct { | ||
| id string | ||
| nodeType string | ||
| } | ||
|
|
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| // ID implements Node. | ||
| func (m *TestNode) ID() string { | ||
| return m.id | ||
| } | ||
|
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| // Type implements Node. | ||
| func (m *TestNode) Type() string { | ||
| return m.nodeType | ||
| } | ||
|
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| func TestCompoundGrapherHappyPath(t *testing.T) { | ||
| graph1 := NewGraph() | ||
| graph1.InsertTree( | ||
| &TestNode{id: "graph1/node1", nodeType: "testnode"}, | ||
| &TestNode{id: "graph1/node2", nodeType: "testnode"}, | ||
| ) | ||
|
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| grapher1 := &MockGrapher{} | ||
| grapher1.On("Graph", mock.Anything).Return(graph1, nil) | ||
|
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| graph2 := NewGraph() | ||
| graph2.InsertTree( | ||
| &TestNode{id: "graph2/node1", nodeType: "testnode"}, | ||
| &TestNode{id: "graph2/node2", nodeType: "testnode"}, | ||
| ) | ||
|
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| grapher2 := &MockGrapher{} | ||
| grapher2.On("Graph", mock.Anything).Return(graph2, nil) | ||
|
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| compoundGrapher := CompoundGrapher{ | ||
| Graphers: []Grapher{grapher1, grapher2}, | ||
| } | ||
|
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| graph, err := compoundGrapher.Graph(context.TODO()) | ||
| require.NoError(t, err) | ||
| grapher1.AssertExpectations(t) | ||
| grapher2.AssertExpectations(t) | ||
|
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| expectedString := `graph1/node1->graph1/node2 | ||
| graph2/node1->graph2/node2` | ||
|
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| actualString := graph.String() | ||
|
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| // Ignore order when matching | ||
| expected := strings.Split(expectedString, "\n") | ||
| actual := strings.Split(actualString, "\n") | ||
|
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| assert.ElementsMatch(t, expected, actual) | ||
| } | ||
|
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| func TestCompoundGrapherError(t *testing.T) { | ||
| testCases := []struct { | ||
| Name string | ||
| Err1 error | ||
| Err2 error | ||
| ExpectedErr string | ||
| }{ | ||
| { | ||
| Name: "grapher 1 fails", | ||
| Err1: errors.New("failed to graph"), | ||
| Err2: nil, | ||
| ExpectedErr: "failed to graph", | ||
| }, | ||
| { | ||
| Name: "grapher 2 fails", | ||
| Err1: nil, | ||
| Err2: errors.New("failed to graph"), | ||
| ExpectedErr: "failed to graph", | ||
| }, | ||
| { | ||
| Name: "grapher 1 and 2 fail", | ||
| Err1: errors.New("failed to graph"), | ||
| Err2: errors.New("failed to graph"), | ||
| ExpectedErr: "failed to graph\nfailed to graph", | ||
| }, | ||
| } | ||
|
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| for _, testCase := range testCases { | ||
| t.Run(testCase.Name, func(t *testing.T) { | ||
| grapher1 := &MockGrapher{} | ||
| grapher1.On("Graph", mock.Anything).Return(Graph(nil), testCase.Err1) | ||
|
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| grapher2 := &MockGrapher{} | ||
| grapher2.On("Graph", mock.Anything).Return(Graph(nil), testCase.Err2) | ||
|
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| compoundGrapher := CompoundGrapher{ | ||
| Graphers: []Grapher{grapher1, grapher2}, | ||
| } | ||
|
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| _, err := compoundGrapher.Graph(context.TODO()) | ||
| require.EqualError(t, err, testCase.ExpectedErr) | ||
| grapher1.AssertExpectations(t) | ||
| grapher2.AssertExpectations(t) | ||
| }) | ||
| } | ||
| } |