From ff970fa06367a6fc7ffa27ae75742c3bc2b1b936 Mon Sep 17 00:00:00 2001
From: Sohan Kunkerkar <sohank2602@gmail.com>
Date: Mon, 26 Oct 2020 00:30:49 -0400
Subject: [PATCH] tests/positive/general: add test for merging multiple base
 configs

---
 tests/positive/general/general.go | 101 ++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/tests/positive/general/general.go b/tests/positive/general/general.go
index ff7722f715..c58be0568c 100644
--- a/tests/positive/general/general.go
+++ b/tests/positive/general/general.go
@@ -41,8 +41,40 @@ func init() {
 	register.Register(register.PositiveTest, AppendConfigWithRemoteConfigData())
 	register.Register(register.PositiveTest, VersionOnlyConfig())
 	register.Register(register.PositiveTest, EmptyUserdata())
+	register.Register(register.PositiveTest, VerifyMergingOfMultipleBaseConfigs())
 }
 
+var (
+	baseConfig = []byte(`{
+				"ignition": { "version": "3.0.0" },
+				"storage": {
+					"files": [{
+						"path": "/foo/bar",
+						"contents": { "source": "data:,base%20config%0A" }
+					}]
+				}
+			}`)
+
+	baseConfig2 = []byte(`{
+				"ignition": { "version": "3.0.0" },
+				"storage": {
+					"files": [{
+						"path": "/foo/bar2",
+						"contents": { "source": "data:,base%20config2%0A" }
+					}]
+				}
+			}`)
+	platformConfig = []byte(`{
+				"ignition": { "version": "3.0.0" },
+				"storage": {
+					"files": [{
+						"path": "/foo/bar3",
+						"contents": { "source": "data:,platform%20config%0A" }
+					}]
+				}
+			}`)
+)
+
 func ReformatFilesystemAndWriteFile() types.Test {
 	name := "genernal.reformat.withfile"
 	in := types.GetBaseDisk()
@@ -706,3 +738,72 @@ func EmptyUserdata() types.Test {
 		ConfigShouldBeBad: true,
 	}
 }
+
+// VerifyMergingOfMultipleBaseConfigs checks if multiple
+// base configs and/or platform configs are merged in the
+// right order.
+func VerifyMergingOfMultipleBaseConfigs() types.Test {
+	name := "merge.multiple.base.configs"
+	in := types.GetBaseDisk()
+	out := types.GetBaseDisk()
+	config := `{
+		"ignition": {"version": "$version"}
+	}`
+	configMinVersion := "3.0.0"
+	var systemFiles []types.File
+
+	systemFiles = append(systemFiles, types.File{
+		Node: types.Node{
+			Name:      "40-base.ign",
+			Directory: "base.d",
+		},
+		Contents: string(baseConfig),
+	}, types.File{
+		Node: types.Node{
+			Name:      "50-base2.ign",
+			Directory: "base.d",
+		},
+		Contents: string(baseConfig2),
+	}, types.File{
+		Node: types.Node{
+			Name:      "10-plaform.ign",
+			Directory: "base.platform.d/file",
+		},
+		Contents: string(platformConfig),
+	})
+	out[0].Partitions.AddFiles("ROOT", []types.File{
+		{
+			Node: types.Node{
+				Name:      "bar",
+				Directory: "foo",
+			},
+			Contents: "base config\n",
+		},
+	})
+	out[0].Partitions.AddFiles("ROOT", []types.File{
+		{
+			Node: types.Node{
+				Name:      "bar2",
+				Directory: "foo",
+			},
+			Contents: "base config2\n",
+		},
+	})
+	out[0].Partitions.AddFiles("ROOT", []types.File{
+		{
+			Node: types.Node{
+				Name:      "bar3",
+				Directory: "foo",
+			},
+			Contents: "platform config\n",
+		},
+	})
+	return types.Test{
+		Name:             name,
+		In:               in,
+		Out:              out,
+		Config:           config,
+		SystemDirFiles:   systemFiles,
+		ConfigMinVersion: configMinVersion,
+	}
+}