add unittest for context.go

Signed-off-by: yxxhero <aiopsclub@163.com>

pkg/helmexec/context_test.go

@@ -0,0 +1,98 @@
+package helmexec
+
+import (
+	"os"
+	"testing"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/stretchr/testify/require"
+)
+
+// TestGetTillerlessArgs tests the GetTillerlessArgs function
+func TestGetTillerlessArgs(t *testing.T) {
+	helmBinary := "helm"
+
+	tests := []struct {
+		tillerless       bool
+		helmMajorVersion string
+		tillerNamespace  string
+		expected         []string
+	}{
+		{
+			tillerless:       true,
+			helmMajorVersion: "2.0.0",
+			expected:         []string{"tiller", "run", "--", helmBinary},
+		},
+		{
+			tillerless:       true,
+			helmMajorVersion: "2.0.0",
+			tillerNamespace:  "test-namespace",
+			expected:         []string{"tiller", "run", "test-namespace", "--", helmBinary},
+		},
+		{
+			tillerless:       false,
+			helmMajorVersion: "2.0.0",
+			expected:         []string{},
+		},
+		{
+			tillerless:       true,
+			helmMajorVersion: "3.0.0",
+			expected:         []string{},
+		},
+	}
+	for _, test := range tests {
+		hc := &HelmContext{
+			Tillerless:      test.tillerless,
+			TillerNamespace: test.tillerNamespace,
+		}
+		sr, _ := semver.NewVersion(test.helmMajorVersion)
+		he := &execer{
+			helmBinary: helmBinary,
+			version:    *sr,
+		}
+		require.Equalf(t, test.expected, hc.GetTillerlessArgs(he), "expected result %s, received result %s", test.expected, hc.GetTillerlessArgs(he))
+
+	}
+}
+
+// TestGetTillerlessEnv tests the getTillerlessEnv function
+func TestGetTillerlessEnv(t *testing.T) {
+	kubeconfigEnv := "KUBECONFIG"
+
+	tests := []struct {
+		tillerless bool
+		kubeconfig string
+		expected   map[string]string
+	}{
+		{
+			tillerless: true,
+			kubeconfig: "",
+			expected:   map[string]string{"HELM_TILLER_SILENT": "true"},
+		},
+		{
+			tillerless: true,
+			kubeconfig: "abc",
+			expected:   map[string]string{"HELM_TILLER_SILENT": "true", kubeconfigEnv: "/workdir/helmfile/pkg/helmexec/abc"},
+		},
+		{
+			tillerless: true,
+			kubeconfig: "/path/to/kubeconfig",
+			expected:   map[string]string{"HELM_TILLER_SILENT": "true", kubeconfigEnv: "/path/to/kubeconfig"},
+		},
+		{
+			tillerless: false,
+			expected:   map[string]string{},
+		},
+	}
+	for _, test := range tests {
+		hc := &HelmContext{
+			Tillerless: test.tillerless,
+		}
+		os.Setenv(kubeconfigEnv, test.kubeconfig)
+		result := hc.getTillerlessEnv()
+		require.Equalf(t, test.expected, result, "expected result %s, received result %s", test.expected, result)
+
+	}
+	defer os.Unsetenv(kubeconfigEnv)
+
+}