Function TestGomoduleComplex

stack/context_test.go:1454–1649

TestGomoduleComplex is an integration test that creates a non-trivial tree of go modules using the "replace" statement.

(t *testing.T)

// TestGomoduleComplex is an integration test that creates a non-trivial tree
// of go modules using the "replace" statement.
func TestGomoduleComplex(t *testing.T) {
	// This test cannot run in parallel.
	if internaltest.GetGoMinorVersion() < 11 {
		t.Skip("requires go module support")
	}
	old := os.Getenv("GOPATH")
	defer os.Setenv("GOPATH", old)
	root, err := os.MkdirTemp("", "stack")
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		if err = os.RemoveAll(root); err != nil {
			t.Error(err)
		}
	}()

	os.Setenv("GOPATH", filepath.Join(root, "go"))
	os.Setenv("GO111MODULE", "on")
	tree := map[string]string{
		"pkg1/go.mod": "module example.com/pkg1\n" +
			"require (\n" +
			"\texample.com/pkg2 v0.0.1\n" +
			"\texample.com/pkg3 v0.0.1\n" +
			")\n" +
			"replace example.com/pkg2 => ../pkg2\n" +
			// This is kind of a hack to force testing with a package inside GOPATH,
			// since this won't normally work by default.
			"replace example.com/pkg3 => ../go/src/example.com/pkg3\n",
		"pkg1/cmd/main.go": "package main\n" +
			"import \"example.com/pkg1/internal\"\n" +
			"func main() {\n" +
			"\tinternal.CallCallDie()\n" +
			"}\n",
		"pkg1/internal/int.go": "package internal\n" +
			"import \"example.com/pkg2\"\n" +
			"func CallCallDie() {\n" +
			"\tpkg2.CallDie()\n" +
			"}\n",

		"pkg2/go.mod": "module example.com/pkg2\n" +
			"require (\n" +
			"\texample.com/pkg3 v0.0.1\n" +
			")\n" +
			// This is kind of a hack to force testing with a package inside GOPATH,
			// since this won't normally work by default.
			"replace example.com/pkg3 => ../go/src/example.com/pkg3\n",
		"pkg2/src2.go": "package pkg2\n" +
			"import \"example.com/pkg3\"\n" +
			"func CallDie() { pkg3.Die() }\n",

		"go/src/example.com/pkg3/go.mod": "module example.com/pkg3\n",
		"go/src/example.com/pkg3/src3.go": "package pkg3\n" +
			"func Die() { panic(42) }\n",
	}
	createTree(t, root, tree)

	exe := filepath.Join(root, "yo")