feat: Add separate package manager and resolver

packagemanager/npm_test.go

@@ -0,0 +1,63 @@
+package packagemanager
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNpmParseCommand(t *testing.T) {
+	cases := []struct {
+		name    string
+		command string
+		assert  func(t *testing.T, parsedCommand *ParsedCommand, err error)
+	}{
+		{
+			name:    "install a single package",
+			command: "npm install @types/node",
+			assert: func(t *testing.T, parsedCommand *ParsedCommand, err error) {
+				assert.NoError(t, err)
+				assert.Equal(t, 1, len(parsedCommand.InstallTargets))
+				assert.Equal(t, "@types/node", parsedCommand.InstallTargets[0].PackageVersion.Package.Name)
+			},
+		},
+		{
+			name:    "no install target",
+			command: "npm install",
+			assert: func(t *testing.T, parsedCommand *ParsedCommand, err error) {
+				assert.NoError(t, err)
+				assert.Equal(t, 0, len(parsedCommand.InstallTargets))
+			},
+		},
+		{
+			name:    "multiple package installations",
+			command: "npm install @types/node @types/react",
+			assert: func(t *testing.T, parsedCommand *ParsedCommand, err error) {
+				assert.NoError(t, err)
+				assert.Equal(t, 2, len(parsedCommand.InstallTargets))
+				assert.Equal(t, "@types/node", parsedCommand.InstallTargets[0].PackageVersion.Package.Name)
+				assert.Equal(t, "@types/react", parsedCommand.InstallTargets[1].PackageVersion.Package.Name)
+			},
+		},
+		{
+			name:    "not an installation command",
+			command: "npm update @types/node",
+			assert: func(t *testing.T, parsedCommand *ParsedCommand, err error) {
+				assert.NoError(t, err)
+				assert.NotNil(t, parsedCommand)
+				assert.Equal(t, 0, len(parsedCommand.InstallTargets))
+			},
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			npm, err := NewNpmPackageManager(DefaultNpmPackageManagerConfig())
+			assert.NoError(t, err)
+
+			parsedCommand, err := npm.ParseCommand(strings.Split(tc.command, " "))
+			tc.assert(t, parsedCommand, err)
+		})
+	}
+}