Consolidate test support/setup

Add a test support package which allows shared test functionality
for both the unit and integration tests.

Tests importing the proctl/test package will gain access to a special
test entrypoint which precompiles fixtures and makes them available
to tests.

proctl/proctl_test.go

@@ -3,29 +3,29 @@ package proctl
 import (
 	"bytes"
 	"encoding/binary"
-	"os"
-	"os/exec"
 	"path/filepath"
 	"runtime"
 	"testing"
+
+	protest "github.com/derekparker/delve/proctl/test"
 )
 
-func withTestProcess(name string, t *testing.T, fn func(p *DebuggedProcess)) {
-	runtime.LockOSThread()
-	base := filepath.Base(name)
-	if err := exec.Command("go", "build", "-gcflags=-N -l", "-o", base, name+".go").Run(); err != nil {
-		t.Fatalf("Could not compile %s due to %s", name, err)
+func TestMain(m *testing.M) {
+	protest.RunTestsWithFixtures(m)
 }
-	defer os.Remove("./" + base)
 
-	p, err := Launch([]string{"./" + base})
+func withTestProcess(name string, t *testing.T, fn func(p *DebuggedProcess, fixture protest.Fixture)) {
+	runtime.LockOSThread()
+
+	fixture := protest.Fixtures[name]
+	p, err := Launch([]string{fixture.Path})
 	if err != nil {
 		t.Fatal("Launch():", err)
 	}
 
 	defer p.Process.Kill()
 
-	fn(p)
+	fn(p, fixture)
 }
 
 func getRegisters(p *DebuggedProcess, t *testing.T) Registers {
@@ -72,7 +72,7 @@ func currentLineNumber(p *DebuggedProcess, t *testing.T) (string, int) {
 }
 
 func TestExit(t *testing.T) {
-	withTestProcess("../_fixtures/continuetestprog", t, func(p *DebuggedProcess) {
+	withTestProcess("continuetestprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		err := p.Continue()
 		pe, ok := err.(ProcessExitedError)
 		if !ok {
@@ -88,7 +88,7 @@ func TestExit(t *testing.T) {
 }
 
 func TestHalt(t *testing.T) {
-	withTestProcess("../_fixtures/testprog", t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		go func() {
 			for {
 				if p.Running() {
@@ -117,7 +117,7 @@ func TestHalt(t *testing.T) {
 }
 
 func TestStep(t *testing.T) {
-	withTestProcess("../_fixtures/testprog", t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		helloworldfunc := p.goSymTable.LookupFunc("main.helloworld")
 		helloworldaddr := helloworldfunc.Entry
 
@@ -139,7 +139,7 @@ func TestStep(t *testing.T) {
 }
 
 func TestBreakPoint(t *testing.T) {
-	withTestProcess("../_fixtures/testprog", t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		helloworldfunc := p.goSymTable.LookupFunc("main.helloworld")
 		helloworldaddr := helloworldfunc.Entry
 
@@ -160,7 +160,7 @@ func TestBreakPoint(t *testing.T) {
 }
 
 func TestBreakPointInSeperateGoRoutine(t *testing.T) {
-	withTestProcess("../_fixtures/testthreads", t, func(p *DebuggedProcess) {
+	withTestProcess("testthreads", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		fn := p.goSymTable.LookupFunc("main.anotherthread")
 		if fn == nil {
 			t.Fatal("No fn exists")
@@ -189,7 +189,7 @@ func TestBreakPointInSeperateGoRoutine(t *testing.T) {
 }
 
 func TestBreakPointWithNonExistantFunction(t *testing.T) {
-	withTestProcess("../_fixtures/testprog", t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		_, err := p.Break(0)
 		if err == nil {
 			t.Fatal("Should not be able to break at non existant function")
@@ -198,7 +198,7 @@ func TestBreakPointWithNonExistantFunction(t *testing.T) {
 }
 
 func TestClearBreakPoint(t *testing.T) {
-	withTestProcess("../_fixtures/testprog", t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		fn := p.goSymTable.LookupFunc("main.sleepytime")
 		bp, err := p.Break(fn.Entry)
 		assertNoError(err, t, "Break()")
@@ -227,8 +227,7 @@ type nextTest struct {
 }
 
 func testnext(testcases []nextTest, initialLocation string, t *testing.T) {
-	var executablePath = "../_fixtures/testnextprog"
-	withTestProcess(executablePath, t, func(p *DebuggedProcess) {
+	withTestProcess("testnextprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		bp, err := p.BreakByLocation(initialLocation)
 		assertNoError(err, t, "Break()")
 		assertNoError(p.Continue(), t, "Continue()")
@@ -298,8 +297,7 @@ func TestNextFunctionReturn(t *testing.T) {
 }
 
 func TestRuntimeBreakpoint(t *testing.T) {
-	var testfile, _ = filepath.Abs("../_fixtures/testruntimebreakpoint")
-	withTestProcess(testfile, t, func(p *DebuggedProcess) {
+	withTestProcess("testruntimebreakpoint", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		err := p.Continue()
 		if err != nil {
 			t.Fatal(err)
@@ -316,16 +314,13 @@ func TestRuntimeBreakpoint(t *testing.T) {
 }
 
 func TestFindReturnAddress(t *testing.T) {
-	var testfile, _ = filepath.Abs("../_fixtures/testnextprog")
-
-	withTestProcess(testfile, t, func(p *DebuggedProcess) {
+	withTestProcess("testnextprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		var (
 			fdes = p.frameEntries
 			gsd  = p.goSymTable
 		)
 
-		testsourcefile := testfile + ".go"
-		start, _, err := gsd.LineToPC(testsourcefile, 24)
+		start, _, err := gsd.LineToPC(fixture.Source, 24)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -369,9 +364,7 @@ func TestFindReturnAddress(t *testing.T) {
 }
 
 func TestSwitchThread(t *testing.T) {
-	var testfile, _ = filepath.Abs("../_fixtures/testnextprog")
-
-	withTestProcess(testfile, t, func(p *DebuggedProcess) {
+	withTestProcess("testnextprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		// With invalid thread id
 		err := p.SwitchThread(-1)
 		if err == nil {
@@ -412,9 +405,7 @@ func TestSwitchThread(t *testing.T) {
 }
 
 func TestFunctionCall(t *testing.T) {
-	var testfile, _ = filepath.Abs("../_fixtures/testprog")
-
-	withTestProcess(testfile, t, func(p *DebuggedProcess) {
+	withTestProcess("testprog", t, func(p *DebuggedProcess, fixture protest.Fixture) {
 		pc, err := p.FindLocation("main.main")
 		if err != nil {
 			t.Fatal(err)

proctl/test/support.go

@@ -0,0 +1,87 @@
+package test
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// Fixture is a test binary.
+type Fixture struct {
+	// Name is the short name of the fixture.
+	Name string
+	// Path is the absolute path to the test binary.
+	Path string
+	// Source is the absolute path of the test binary source.
+	Source string
+}
+
+// Fixtures is a map of Fixture.Name to Fixture.
+var Fixtures map[string]Fixture = make(map[string]Fixture)
+
+// RunTestsWithFixtures will pre-compile test fixtures before running test
+// methods. Test binaries are deleted before exiting.
+func RunTestsWithFixtures(m *testing.M) {
+	// Find the fixtures directory; this is necessary because the test file's
+	// nesting level can vary. Only look up to a maxdepth of 10 (which seems
+	// like a sane alternative to recursion).
+	parent := ".."
+	fixturesDir := filepath.Join(parent, "_fixtures")
+	for depth := 0; depth < 10; depth++ {
+		if _, err := os.Stat(fixturesDir); err == nil {
+			break
+		}
+		fixturesDir = filepath.Join("..", fixturesDir)
+	}
+	if _, err := os.Stat(fixturesDir); err != nil {
+		fmt.Println("Couldn't locate fixtures directory")
+		os.Exit(1)
+	}
+
+	// Collect all files which look like fixture source files.
+	sources, err := ioutil.ReadDir(fixturesDir)
+	if err != nil {
+		fmt.Printf("Couldn't read fixtures dir: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Compile the fixtures.
+	for _, src := range sources {
+		if src.IsDir() {
+			continue
+		}
+		// Make a (good enough) random temporary file name
+		r := make([]byte, 4)
+		rand.Read(r)
+		path := filepath.Join(fixturesDir, src.Name())
+		name := strings.TrimSuffix(src.Name(), filepath.Ext(src.Name()))
+		tmpfile := filepath.Join(os.TempDir(), fmt.Sprintf("%s.%s", name, hex.EncodeToString(r)))
+
+		// Build the test binary
+		if err := exec.Command("go", "build", "-gcflags=-N -l", "-o", tmpfile, path).Run(); err != nil {
+			fmt.Printf("Error compiling %s: %s\n", path, err)
+			os.Exit(1)
+		}
+		fmt.Printf("Compiled test binary %s: %s\n", name, tmpfile)
+
+		source, _ := filepath.Abs(path)
+		Fixtures[name] = Fixture{Name: name, Path: tmpfile, Source: source}
+	}
+
+	status := m.Run()
+
+	// Remove the fixtures.
+	// TODO(danmace): Not sure why yet, but doing these removes in a defer isn't
+	// working.
+	for _, f := range Fixtures {
+		os.Remove(f.Path)
+	}
+
+	os.Exit(status)
+}

proctl/variables_test.go

@@ -2,9 +2,10 @@ package proctl
 
 import (
 	"fmt"
-	"path/filepath"
 	"sort"
 	"testing"
+
+	protest "github.com/derekparker/delve/proctl/test"
 )
 
 type varTest struct {
@@ -29,13 +30,6 @@ func assertVariable(t *testing.T, variable *Variable, expected varTest) {
 }
 
 func TestVariableEvaluation(t *testing.T) {
-	executablePath := "../_fixtures/testvariables"
-
-	fp, err := filepath.Abs(executablePath + ".go")
-	if err != nil {
-		t.Fatal(err)
-	}
-
 	testcases := []varTest{
 		{"a1", "foofoofoofoofoofoo", "struct string", nil},
 		{"a10", "ofo", "struct string", nil},
@@ -73,8 +67,8 @@ func TestVariableEvaluation(t *testing.T) {
 		{"NonExistent", "", "", fmt.Errorf("could not find symbol value for NonExistent")},
 	}
 
-	withTestProcess(executablePath, t, func(p *DebuggedProcess) {
-		pc, _, _ := p.goSymTable.LineToPC(fp, 57)
+	withTestProcess("testvariables", t, func(p *DebuggedProcess, fixture protest.Fixture) {
+		pc, _, _ := p.goSymTable.LineToPC(fixture.Source, 57)
 
 		_, err := p.Break(pc)
 		assertNoError(err, t, "Break() returned an error")
@@ -97,15 +91,8 @@ func TestVariableEvaluation(t *testing.T) {
 }
 
 func TestVariableFunctionScoping(t *testing.T) {
-	executablePath := "../_fixtures/testvariables"
-
-	fp, err := filepath.Abs(executablePath + ".go")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	withTestProcess(executablePath, t, func(p *DebuggedProcess) {
-		pc, _, _ := p.goSymTable.LineToPC(fp, 57)
+	withTestProcess("testvariables", t, func(p *DebuggedProcess, fixture protest.Fixture) {
+		pc, _, _ := p.goSymTable.LineToPC(fixture.Source, 57)
 
 		_, err := p.Break(pc)
 		assertNoError(err, t, "Break() returned an error")
@@ -121,7 +108,7 @@ func TestVariableFunctionScoping(t *testing.T) {
 		assertNoError(err, t, "Unable to find variable a1")
 
 		// Move scopes, a1 exists here by a2 does not
-		pc, _, _ = p.goSymTable.LineToPC(fp, 23)
+		pc, _, _ = p.goSymTable.LineToPC(fixture.Source, 23)
 
 		_, err = p.Break(pc)
 		assertNoError(err, t, "Break() returned an error")
@@ -157,13 +144,6 @@ func (s varArray) Less(i, j int) bool {
 }
 
 func TestLocalVariables(t *testing.T) {
-	executablePath := "../_fixtures/testvariables"
-
-	fp, err := filepath.Abs(executablePath + ".go")
-	if err != nil {
-		t.Fatal(err)
-	}
-
 	testcases := []struct {
 		fn     func(*ThreadContext) ([]*Variable, error)
 		output []varTest
@@ -203,8 +183,8 @@ func TestLocalVariables(t *testing.T) {
 				{"baz", "bazburzum", "struct string", nil}}},
 	}
 
-	withTestProcess(executablePath, t, func(p *DebuggedProcess) {
-		pc, _, _ := p.goSymTable.LineToPC(fp, 57)
+	withTestProcess("testvariables", t, func(p *DebuggedProcess, fixture protest.Fixture) {
+		pc, _, _ := p.goSymTable.LineToPC(fixture.Source, 57)
 
 		_, err := p.Break(pc)
 		assertNoError(err, t, "Break() returned an error")

service/rest/integration_test.go

@@ -1,58 +1,16 @@
 package rest
 
 import (
-	"crypto/rand"
-	"encoding/hex"
-	"fmt"
-	"io/ioutil"
 	"net"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
 	"testing"
 
+	protest "github.com/derekparker/delve/proctl/test"
 	"github.com/derekparker/delve/service"
 	"github.com/derekparker/delve/service/api"
 )
 
-var fixtures map[string]string = make(map[string]string)
-
 func TestMain(m *testing.M) {
-	fixturesDir := "../../_fixtures"
-	sources, err := ioutil.ReadDir(fixturesDir)
-	if err != nil {
-		fmt.Printf("Couldn't read fixtures dir: %v\n", err)
-		os.Exit(1)
-	}
-
-	for _, src := range sources {
-		if src.IsDir() {
-			continue
-		}
-		// Make a (good enough) random temporary file name
-		r := make([]byte, 4)
-		rand.Read(r)
-		path := filepath.Join(fixturesDir, src.Name())
-		name := strings.TrimSuffix(src.Name(), filepath.Ext(src.Name()))
-		tmpfile := filepath.Join(os.TempDir(), fmt.Sprintf("%s.%s", name, hex.EncodeToString(r)))
-
-		// Build the test binary
-		if err := exec.Command("go", "build", "-gcflags=-N -l", "-o", tmpfile, path).Run(); err != nil {
-			fmt.Printf("Error compiling %s: %s\n", path, err)
-			os.Exit(1)
-		}
-		fmt.Printf("Compiled test binary %s: %s\n", name, tmpfile)
-		fixtures[name] = tmpfile
-	}
-
-	status := m.Run()
-
-	for _, f := range fixtures {
-		os.Remove(f)
-	}
-
-	os.Exit(status)
+	protest.RunTestsWithFixtures(m)
 }
 
 func withTestClient(name string, t *testing.T, fn func(c service.Client)) {
@@ -60,16 +18,13 @@ func withTestClient(name string, t *testing.T, fn func(c service.Client)) {
 	if err != nil {
 		t.Fatalf("couldn't start listener: %s\n", err)
 	}
-
 	server := NewServer(&Config{
 		Listener:    listener,
-		ProcessArgs: []string{fixtures[name]},
+		ProcessArgs: []string{protest.Fixtures[name].Path},
 	})
 	go server.Run()
-
 	client := NewClient(listener.Addr().String())
 	defer client.Detach(true)
-
 	fn(client)
 }