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main_test.go
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main_test.go
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package main
import (
"flag"
"io/ioutil"
"path/filepath"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/paulxiong/gomod/internal/printer"
"github.com/paulxiong/gomod/internal/testutil"
)
var regenerate = flag.Bool("regenerate", false, "Instead of testing the output, use the generated output to refresh the golden images.")
func TestGraphGeneration(t *testing.T) {
testcases := map[string]struct {
expectedFileBase string
dotArgs *graphArgs
}{
"Full": {
expectedFileBase: "full",
dotArgs: &graphArgs{
query: "deps(github.com/paulxiong/gomod:test)",
style: &printer.StyleOptions{
ScaleNodes: true,
Cluster: printer.Full,
},
},
},
"Shared": {
expectedFileBase: "shared-dependencies",
dotArgs: &graphArgs{
query: "shared(deps(github.com/paulxiong/gomod))",
style: &printer.StyleOptions{},
},
},
"TargetDependency": {
expectedFileBase: "dependency-chains",
dotArgs: &graphArgs{
annotate: true,
query: "rdeps(github.com/stretchr/testify)",
style: &printer.StyleOptions{},
},
},
}
for name := range testcases {
testcase := testcases[name]
t.Run(name, func(t *testing.T) {
tempDir := t.TempDir()
cArgs := &commonArgs{log: testutil.TestLogger(t)}
// Test the dot generation.
dotArgs := *testcase.dotArgs
dotArgs.commonArgs = cArgs
dotArgs.outputPath = filepath.Join(tempDir, testcase.expectedFileBase+".dot")
require.NoError(t, runGraphCmd(&dotArgs))
actual, err := ioutil.ReadFile(filepath.Join(tempDir, testcase.expectedFileBase+".dot"))
require.NoError(t, err)
if *regenerate {
require.NoError(t, ioutil.WriteFile(filepath.Join("images", testcase.expectedFileBase+".dot"), actual, 0644))
} else {
var expected []byte
expected, err = ioutil.ReadFile(filepath.Join("images", testcase.expectedFileBase+".dot"))
require.NoError(t, err)
assert.Equal(t, string(expected), string(actual))
}
})
}
}