Add surrounding <testsuites> tag.

* If a test log contains more than one package we need to wrap it
  in a <testsuites> element in order to be valid xml. Bamboo
  cannot read the file if it is not valid xml.

go-junit-report_test.go

@@ -233,7 +233,7 @@ func TestJUnitFormatter(t *testing.T) {
 		}
 
 		if string(junitReport.Bytes()) != report {
-			t.Fatalf("Report xml ==\n%s, want\n%s", string(junitReport.Bytes()), report)
+			t.Fatalf("Fail: %s Report xml ==\n%s, want\n%s", testCase.name, string(junitReport.Bytes()), report)
 		}
 	}
 }

junit-formatter.go

@@ -9,6 +9,11 @@ import (
 	"strings"
 )
 
+type JUnitTestSuites struct {
+	XMLName xml.Name `xml:"testsuites"`
+	Suites  []JUnitTestSuite
+}
+
 type JUnitTestSuite struct {
 	XMLName    xml.Name        `xml:"testsuite"`
 	Tests      int             `xml:"tests,attr"`
@@ -53,7 +58,7 @@ func NewJUnitProperty(name, value string) JUnitProperty {
 // JUnitReportXML writes a junit xml representation of the given report to w
 // in the format described at http://windyroad.org/dl/Open%20Source/JUnit.xsd
 func JUnitReportXML(report *Report, noXmlHeader bool, w io.Writer) error {
-	suites := []JUnitTestSuite{}
+	suites := JUnitTestSuites{}
 
 	// convert Report to JUnit test suites
 	for _, pkg := range report.Packages {
@@ -100,7 +105,7 @@ func JUnitReportXML(report *Report, noXmlHeader bool, w io.Writer) error {
 			ts.TestCases = append(ts.TestCases, testCase)
 		}
 
-		suites = append(suites, ts)
+		suites.Suites = append(suites.Suites, ts)
 	}
 
 	// to xml
@@ -114,6 +119,7 @@ func JUnitReportXML(report *Report, noXmlHeader bool, w io.Writer) error {
 	if !noXmlHeader {
 		writer.WriteString(xml.Header)
 	}
+
 	writer.Write(bytes)
 	writer.WriteByte('\n')
 	writer.Flush()

tests/01-report.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
 	<testsuite tests="2" failures="0" time="0.160" name="package/name">
 		<properties>
 			<property name="go.version" value="1.0"></property>
@@ -6,3 +7,4 @@
 		<testcase classname="name" name="TestOne" time="0.060"></testcase>
 		<testcase classname="name" name="TestTwo" time="0.100"></testcase>
 	</testsuite>
+</testsuites>

tests/02-report.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
 	<testsuite tests="2" failures="1" time="0.151" name="package/name">
 		<properties>
 			<property name="go.version" value="1.0"></property>
@@ -8,3 +9,4 @@
 		</testcase>
 		<testcase classname="name" name="TestTwo" time="0.130"></testcase>
 	</testsuite>
+</testsuites>

tests/03-report.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
 	<testsuite tests="2" failures="0" time="0.150" name="package/name">
 		<properties>
 			<property name="go.version" value="1.0"></property>
@@ -8,3 +9,4 @@
 		</testcase>
 		<testcase classname="name" name="TestTwo" time="0.130"></testcase>
 	</testsuite>
+</testsuites>

tests/04-report.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
 	<testsuite tests="2" failures="0" time="0.160" name="package/name">
 		<properties>
 			<property name="go.version" value="1.0"></property>
@@ -6,3 +7,4 @@
 		<testcase classname="name" name="TestOne" time="0.060"></testcase>
 		<testcase classname="name" name="TestTwo" time="0.100"></testcase>
 	</testsuite>
+</testsuites>

tests/05-report.xml

@@ -1,3 +1,4 @@
+<testsuites>
 	<testsuite tests="2" failures="0" time="0.160" name="package/name">
 		<properties>
 			<property name="go.version" value="1.0"></property>
@@ -5,3 +6,4 @@
 		<testcase classname="name" name="TestOne" time="0.060"></testcase>
 		<testcase classname="name" name="TestTwo" time="0.100"></testcase>
 	</testsuite>
+</testsuites>