testing: fixes after the review

Author: vovapi

src/testing/benchmark.go

@@ -70,7 +70,7 @@ var benchmarkLock sync.Mutex
 var memStats runtime.MemStats
 
 // InternalBenchmark is an internal type but exported because it is cross-package;
-// part of the implementation of the "go test" command.
+// it is part of the implementation of the "go test" command.
 type InternalBenchmark struct {
 	Name string
 	F    func(b *B)
@@ -342,7 +342,7 @@ func (b *B) ReportMetric(n float64, unit string) {
 	b.extra[unit] = n
 }
 
-// BenchmarkResult is the results of a benchmark run.
+// BenchmarkResult contains the results of a benchmark run.
 type BenchmarkResult struct {
 	N         int           // The number of iterations.
 	T         time.Duration // The total time taken.
@@ -489,7 +489,7 @@ type benchContext struct {
 }
 
 // RunBenchmarks is an internal function but exported because it is cross-package;
-// part of the implementation of the "go test" command.
+// it is part of the implementation of the "go test" command.
 func RunBenchmarks(matchString func(pat, str string) (bool, error), benchmarks []InternalBenchmark) {
 	runBenchmarks("", matchString, benchmarks)
 }

src/testing/example.go

@@ -20,7 +20,7 @@ type InternalExample struct {
 }
 
 // RunExamples is an internal function but exported because it is cross-package;
-// part of the implementation of the "go test" command.
+// it is part of the implementation of the "go test" command.
 func RunExamples(matchString func(pat, str string) (bool, error), examples []InternalExample) (ok bool) {
 	_, ok = runExamples(matchString, examples)
 	return ok

src/testing/testing.go

@@ -864,7 +864,7 @@ func (t *T) Parallel() {
 }
 
 // InternalTest is an internal type but exported because it is cross-package;
-// part of the implementation of the "go test" command.
+// it is part of the implementation of the "go test" command.
 type InternalTest struct {
 	Name string
 	F    func(*T)
@@ -1215,7 +1215,7 @@ func listTests(matchString func(pat, str string) (bool, error), tests []Internal
 }
 
 // RunTests is an internal function but exported because it is cross-package;
-// part of the implementation of the "go test" command.
+// it is part of the implementation of the "go test" command.
 func RunTests(matchString func(pat, str string) (bool, error), tests []InternalTest) (ok bool) {
 	ran, ok := runTests(matchString, tests)
 	if !ran && !haveExamples {