distro: add tests and fixtures for identification

Signed-off-by: Alfredo Deza <adeza@anchore.com>

imgbom/distro/identify_test.go

@@ -0,0 +1,108 @@
+package distro
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestParseOsRelease(t *testing.T) {
+
+	tests := []struct {
+		fixture    string
+		name       string
+		RawVersion string
+	}{
+		{
+			fixture:    "test-fixtures/ubuntu-20.04",
+			name:       "ubuntu",
+			RawVersion: "20.04",
+		},
+		{
+			fixture:    "test-fixtures/debian-8",
+			name:       "debian",
+			RawVersion: "8",
+		},
+		{
+			fixture:    "test-fixtures/centos-8",
+			name:       "centos",
+			RawVersion: "8",
+		},
+		{
+			fixture:    "test-fixtures/rhel-8",
+			name:       "redhat",
+			RawVersion: "8.1",
+		},
+	}
+
+	for _, test := range tests {
+		name := fmt.Sprintf("%s:%s", test.name, test.RawVersion)
+		fixture, err := os.Open(test.fixture)
+		defer fixture.Close()
+
+		if err != nil {
+			t.Fatalf("failed to open fixture: %+v", err)
+		}
+
+		b, err := ioutil.ReadAll(fixture)
+		if err != nil {
+			t.Fatalf("unable to read fixture file: %+v", err)
+		}
+
+		contents := string(b)
+
+		t.Run(name, func(t *testing.T) {
+			distro := parseOsRelease(contents)
+			if distro.Name() != test.name {
+				t.Errorf("mismatched name in distro: '%s' != '%s'", distro.Name(), test.name)
+			}
+			if distro.RawVersion != test.RawVersion {
+				t.Errorf("mismatched distro version: '%s' != '%s'", distro.RawVersion, test.RawVersion)
+			}
+		})
+	}
+
+}
+
+func TestParseOsReleaseFailures(t *testing.T) {
+
+	tests := []struct {
+		fixture string
+		name    string
+	}{
+		{
+			fixture: "test-fixtures/bad-version",
+			name:    "No version",
+		},
+		{
+			fixture: "test-fixtures/bad-id",
+			name:    "No name ID",
+		},
+	}
+
+	for _, test := range tests {
+		name := fmt.Sprintf("%s:%s", test.name, test.fixture)
+		fixture, err := os.Open(test.fixture)
+		defer fixture.Close()
+
+		if err != nil {
+			t.Fatalf("failed to open fixture: %+v", err)
+		}
+
+		b, err := ioutil.ReadAll(fixture)
+		if err != nil {
+			t.Fatalf("unable to read fixture file: %+v", err)
+		}
+
+		contents := string(b)
+
+		t.Run(name, func(t *testing.T) {
+			distro := parseOsRelease(contents)
+			if distro != nil {
+				t.Errorf("unexpected non-nil distro: '%s' != nil", distro)
+			}
+		})
+	}
+
+}

imgbom/distro/test-fixtures/bad-id

@@ -0,0 +1,15 @@
+NAME="Red Hat Enterprise Linux"
+VERSION="8.1 (Ootpa)"
+ID_LIKE="fedora"
+PLATFORM_ID="platform:el8"
+PRETTY_NAME="Red Hat Enterprise Linux 8.1 (Ootpa)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:redhat:enterprise_linux:8.1:GA"
+HOME_URL="https://www.redhat.com/"
+BUG_REPORT_URL="https://bugzilla.redhat.com/"
+
+REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8"
+REDHAT_BUGZILLA_PRODUCT_VERSION=8.1
+REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
+REDHAT_SUPPORT_PRODUCT_VERSION="8.1"
+

imgbom/distro/test-fixtures/bad-version

@@ -0,0 +1,15 @@
+NAME="Red Hat Enterprise Linux"
+VERSION="8.1 (Ootpa)"
+ID="rhel"
+ID_LIKE="fedora"
+PLATFORM_ID="platform:el8"
+PRETTY_NAME="Red Hat Enterprise Linux 8.1 (Ootpa)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:redhat:enterprise_linux:8.1:GA"
+HOME_URL="https://www.redhat.com/"
+BUG_REPORT_URL="https://bugzilla.redhat.com/"
+
+REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8"
+REDHAT_BUGZILLA_PRODUCT_VERSION=8.1
+REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
+REDHAT_SUPPORT_PRODUCT_VERSION="8.1"

imgbom/distro/test-fixtures/centos-8

@@ -0,0 +1,17 @@
+NAME="CentOS Linux"
+VERSION="8 (Core)"
+ID="centos"
+ID_LIKE="rhel fedora"
+VERSION_ID="8"
+PLATFORM_ID="platform:el8"
+PRETTY_NAME="CentOS Linux 8 (Core)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:centos:centos:8"
+HOME_URL="https://www.centos.org/"
+BUG_REPORT_URL="https://bugs.centos.org/"
+
+CENTOS_MANTISBT_PROJECT="CentOS-8"
+CENTOS_MANTISBT_PROJECT_VERSION="8"
+REDHAT_SUPPORT_PRODUCT="centos"
+REDHAT_SUPPORT_PRODUCT_VERSION="8"
+

imgbom/distro/test-fixtures/debian-8

@@ -0,0 +1,8 @@
+PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
+NAME="Debian GNU/Linux"
+VERSION_ID="8"
+VERSION="8 (jessie)"
+ID=debian
+HOME_URL="http://www.debian.org/"
+SUPPORT_URL="http://www.debian.org/support"
+BUG_REPORT_URL="https://bugs.debian.org/"

imgbom/distro/test-fixtures/rhel-8

@@ -0,0 +1,16 @@
+NAME="Red Hat Enterprise Linux"
+VERSION="8.1 (Ootpa)"
+ID="rhel"
+ID_LIKE="fedora"
+VERSION_ID="8.1"
+PLATFORM_ID="platform:el8"
+PRETTY_NAME="Red Hat Enterprise Linux 8.1 (Ootpa)"
+ANSI_COLOR="0;31"
+CPE_NAME="cpe:/o:redhat:enterprise_linux:8.1:GA"
+HOME_URL="https://www.redhat.com/"
+BUG_REPORT_URL="https://bugzilla.redhat.com/"
+
+REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8"
+REDHAT_BUGZILLA_PRODUCT_VERSION=8.1
+REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
+REDHAT_SUPPORT_PRODUCT_VERSION="8.1"

imgbom/distro/test-fixtures/ubuntu-20.04

@@ -0,0 +1,12 @@
+NAME="Ubuntu"
+VERSION="20.04 LTS (Focal Fossa)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 20.04 LTS"
+VERSION_ID="20.04"
+HOME_URL="https://www.ubuntu.com/"
+SUPPORT_URL="https://help.ubuntu.com/"
+BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
+PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
+VERSION_CODENAME=focal
+UBUNTU_CODENAME=focal