loader_test.go

package main

import (
	"bytes"
	"io"
	"reflect"
	"runtime"
	"strings"
	"sync"
	"testing"

	"github.com/tinygo-org/tinygo/compileopts"
)

func TestTest(t *testing.T) {
	t.Parallel()

	type targ struct {
		name string
		opts compileopts.Options
	}
	targs := []targ{
		// Host
		{"Host", optionsFromTarget("", sema)},
	}
	if !testing.Short() {
		if runtime.GOOS == "linux" {
			for name, osArch := range supportedLinuxArches {
				options := optionsFromOSARCH(osArch, sema)
				if options.GOARCH != runtime.GOARCH { // Native architecture already run above.
					targs = append(targs, targ{name, options})
				}
			}
		}

		targs = append(targs,
			// QEMU microcontrollers
			targ{"EmulatedCortexM3", optionsFromTarget("cortex-m-qemu", sema)},
			targ{"EmulatedRISCV", optionsFromTarget("riscv-qemu", sema)},

			// Node/Wasmtime
			targ{"WASM", optionsFromTarget("wasm", sema)},
			targ{"WASI", optionsFromTarget("wasip1", sema)},
		)
	}
	for _, targ := range targs {
		t.Run(targ.name, func(t *testing.T) {
			t.Parallel()

			emuCheck(t, targ.opts)

			t.Run("StringComparisons", func(t *testing.T) {
				t.Parallel()

				var wg sync.WaitGroup
				defer wg.Wait()

				out := ioLogger(t, &wg)
				defer out.Close()

				opts := targ.opts
				passed, err := Test("github.com/tinygo-org/tinygo/tests/stringcompare", false, out, out, &opts, "")
				if err != nil {
					t.Errorf("test error: %v", err)
				}
				if !passed {
					t.Error("test failed")
				}
			})

			t.Run("Pass", func(t *testing.T) {
				t.Parallel()

				// Test a package which builds and passes normally.

				var wg sync.WaitGroup
				defer wg.Wait()

				out := ioLogger(t, &wg)
				defer out.Close()

				opts := targ.opts
				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/pass", false, out, out, &opts, "")
				if err != nil {
					t.Errorf("test error: %v", err)
				}
				if !passed {
					t.Error("test failed")
				}
			})

			t.Run("Fail", func(t *testing.T) {
				t.Parallel()

				// Test a package which builds fine but fails.

				var wg sync.WaitGroup
				defer wg.Wait()

				out := ioLogger(t, &wg)
				defer out.Close()

				opts := targ.opts
				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/fail", false, out, out, &opts, "")
				if err != nil {
					t.Errorf("test error: %v", err)
				}
				if passed {
					t.Error("test passed")
				}
			})

			if targ.name != "Host" {
				// Emulated tests are somewhat slow, and these do not need to be run across every platform.
				return
			}

			t.Run("Nothing", func(t *testing.T) {
				t.Parallel()

				// Test a package with no test files.

				var wg sync.WaitGroup
				defer wg.Wait()

				out := ioLogger(t, &wg)
				defer out.Close()

				var output bytes.Buffer
				opts := targ.opts
				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/nothing", false, io.MultiWriter(&output, out), out, &opts, "")
				if err != nil {
					t.Errorf("test error: %v", err)
				}
				if !passed {
					t.Error("test failed")
				}
				if !strings.Contains(output.String(), "[no test files]") {
					t.Error("missing [no test files] in output")
				}
			})

			t.Run("BuildErr", func(t *testing.T) {
				t.Parallel()

				// Test a package which fails to build.

				var wg sync.WaitGroup
				defer wg.Wait()

				out := ioLogger(t, &wg)
				defer out.Close()

				opts := targ.opts
				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/builderr", false, out, out, &opts, "")
				if err == nil {
					t.Error("test did not error")
				}
				if passed {
					t.Error("test passed")
				}
			})
		})
	}
}

func TestGetListOfPackages(t *testing.T) {
	opts := optionsFromTarget("", sema)
	tests := []struct {
		pkgs          []string
		expectedPkgs  []string
		expectesError bool
	}{
		{
			pkgs: []string{"./tests/testing/recurse/..."},
			expectedPkgs: []string{
				"github.com/tinygo-org/tinygo/tests/testing/recurse",
				"github.com/tinygo-org/tinygo/tests/testing/recurse/subdir",
			},
		},
		{
			pkgs: []string{"./tests/testing/pass"},
			expectedPkgs: []string{
				"github.com/tinygo-org/tinygo/tests/testing/pass",
			},
		},
		{
			pkgs: []string{"fmt", "./tests/testing/pass"},
			expectedPkgs: []string{
				"fmt",
				"github.com/tinygo-org/tinygo/tests/testing/pass",
			},
		},
		{
			pkgs:          []string{"./tests/testing"},
			expectesError: true,
		},
	}

	for _, test := range tests {
		packages, err := getListOfPackages(test.pkgs, &opts)
		if err != nil && !test.expectesError {
			t.Errorf("unexpected error: %v", err)
		} else if err == nil && test.expectesError {
			t.Error("expected error, but got none")
		}

		var actualPkgs []string
		for _, pkg := range packages {
			actualPkgs = append(actualPkgs, pkg.ImportPath)
			if pkg.Standard != (pkg.ImportPath == "fmt") {
				t.Errorf("package %s: unexpected Standard value %v", pkg.ImportPath, pkg.Standard)
			}
		}
		if !reflect.DeepEqual(test.expectedPkgs, actualPkgs) {
			t.Errorf("expected two slices to be equal, expected %v got %v", test.expectedPkgs, actualPkgs)
		}
	}
}