From 06a2b89fc3e93a6c381a5d9df229766f706b58d0 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Wed, 2 Jan 2019 11:55:53 +0100
Subject: prog, pkg/{csource,ifuzz,ipc,repro}: make tests deterministic on
 travis

Don't use random seed on travis as it produces flaky coverage reports,
and probably generally better for CI setting.
---
 prog/export_test.go | 4 ++++
 prog/prog_test.go   | 5 +----
 2 files changed, 5 insertions(+), 4 deletions(-)

(limited to 'prog')

diff --git a/prog/export_test.go b/prog/export_test.go
index b6247c850..a49d094ef 100644
--- a/prog/export_test.go
+++ b/prog/export_test.go
@@ -6,6 +6,7 @@ package prog
 import (
 	"fmt"
 	"math/rand"
+	"os"
 	"testing"
 	"time"
 )
@@ -32,6 +33,9 @@ func initTargetTest(t *testing.T, os, arch string) *Target {
 
 func randSource(t *testing.T) rand.Source {
 	seed := int64(time.Now().UnixNano())
+	if os.Getenv("TRAVIS") != "" {
+		seed = 0 // required for deterministic coverage reports
+	}
 	t.Logf("seed=%v", seed)
 	return rand.NewSource(seed)
 }
diff --git a/prog/prog_test.go b/prog/prog_test.go
index 45ab56cfe..91d7351cc 100644
--- a/prog/prog_test.go
+++ b/prog/prog_test.go
@@ -9,7 +9,6 @@ import (
 	"math/rand"
 	"strings"
 	"testing"
-	"time"
 )
 
 func TestGeneration(t *testing.T) {
@@ -144,9 +143,7 @@ func TestCrossTarget(t *testing.T) {
 }
 
 func testCrossTarget(t *testing.T, target *Target, crossTargets []*Target) {
-	seed := int64(time.Now().UnixNano())
-	t.Logf("seed=%v", seed)
-	rs := rand.NewSource(seed)
+	rs := randSource(t)
 	iters := 100
 	if testing.Short() {
 		iters /= 10
-- 
cgit mrf-deployment