add unit test

Signed-off-by: Akash Kumar <meakash7902@gmail.com>

pkg/client/client_test.go

@@ -19,6 +19,7 @@ import (
 	"kcl-lang.io/kpm/pkg/git"
 	"kcl-lang.io/kpm/pkg/opt"
 	pkg "kcl-lang.io/kpm/pkg/package"
+	"kcl-lang.io/kpm/pkg/reporter"
 	"kcl-lang.io/kpm/pkg/runner"
 	"kcl-lang.io/kpm/pkg/utils"
 )
@@ -158,7 +159,31 @@ func TestDependencyGraph(t *testing.T) {
 }
 
 func TestCyclicDependency(t *testing.T) {
-
+	testDir := getTestDir("test_cyclic_dependency")
+	assert.Equal(t, utils.DirExists(filepath.Join(testDir, "aaa")), true)
+	assert.Equal(t, utils.DirExists(filepath.Join(testDir, "aaa/kcl.mod")), true)
+	assert.Equal(t, utils.DirExists(filepath.Join(testDir, "bbb")), true)
+	assert.Equal(t, utils.DirExists(filepath.Join(testDir, "bbb/kcl.mod")), true)
+
+	pkg_path := filepath.Join(testDir, "aaa")
+
+	kpmcli, err := NewKpmClient()
+	assert.Equal(t, err, nil)
+	kclPkg, err := kpmcli.LoadPkgFromPath(pkg_path)
+	assert.Equal(t, err, nil)
+
+	currentDir, err := os.Getwd()
+	assert.Equal(t, err, nil)
+	err = os.Chdir(pkg_path)
+	assert.Equal(t, err, nil)
+
+	_, _, err = kpmcli.InitGraphAndDownloadDeps(kclPkg)
+	assert.Equal(t, err, reporter.NewErrorEvent(
+		reporter.CircularDependencyExist, nil, "adding dependencies results in a cycle",
+	))
+
+	err = os.Chdir(currentDir)
+	assert.Equal(t, err, nil)
 }
 
 func TestInitEmptyPkg(t *testing.T) {

pkg/client/test_data/test_cyclic_dependency/aaa/kcl.mod

@@ -0,0 +1,7 @@
+[package]
+name = "aaa"
+edition = "0.0.1"
+version = "0.0.1"
+
+[dependencies]
+bbb = { path = "../bbb" }

pkg/client/test_data/test_cyclic_dependency/aaa/kcl.mod.lock

@@ -0,0 +1,6 @@
+[dependencies]
+  [dependencies.bbb]
+    name = "bbb"
+    full_name = "bbb_"
+    sum = "Cgx5yepaNrS3/p4fK04RQWf1dEpG3j49ntFqzrJJsxU="
+    path = "../bbb"

pkg/client/test_data/test_cyclic_dependency/bbb/kcl.mod

@@ -0,0 +1,7 @@
+[package]
+name = "bbb"
+edition = "0.0.1"
+version = "0.0.1"
+
+[dependencies]
+aaa = { path = "../aaa" }

pkg/client/test_data/test_cyclic_dependency/bbb/kcl.mod.lock

@@ -0,0 +1,8 @@
+[dependencies]
+  [dependencies.aaa]
+    name = "aaa"
+    full_name = "aaa_0.0.1"
+    version = "0.0.1"
+    sum = "hgAM5wYFzXo83S+OiT0LaBDnHU7Q9vqq3BPXlTDr8TY="
+    path = "../aaa"
+