go/src/cmd/compile/internal/test/ssa_test.go

// runGenTest runs a test-generator, then runs the generated test.
// Generated test can either fail in compilation or execution.
// The environment variable parameter(s) is passed to the run
// of the generated test.
func runGenTest(t *testing.T, filename, tmpname string, ev ...string) { … }

func TestGenFlowGraph(t *testing.T) { … }

// TestCode runs all the tests in the testdata directory as subtests.
// These tests are special because we want to run them with different
// compiler flags set (and thus they can't just be _test.go files in
// this directory).
func TestCode(t *testing.T) { … }