feat: add updater for package.json (#213)

internal/updater/packagejson_test.go

@@ -0,0 +1,70 @@
+package updater
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPackageJsonUpdater(t *testing.T) {
+	tests := []updaterTestCase{
+		{
+			name:     "simple package.json",
+			content:  `{"name":"test","version":"1.0.0"}`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.5",
+			},
+			want:    `{"name":"test","version":"2.0.5"}`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "simple package.json, wrong name",
+			content:  `{"name":"test","version":"1.0.0"}`,
+			filename: "nopackage.json",
+			info: ReleaseInfo{
+				Version: "v2.0.5",
+			},
+			want:    `{"name":"test","version":"1.0.0"}`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "complex package.json",
+			content:  "{\n  \"name\": \"test\",\n  \"version\": \"1.0.0\",\n  \"dependencies\": {\n    \"foo\": \"^1.0.0\"\n  }\n}",
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    "{\n  \"name\": \"test\",\n  \"version\": \"2.0.0\",\n  \"dependencies\": {\n    \"foo\": \"^1.0.0\"\n  }\n}",
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "invalid json",
+			content:  `not json`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    `not json`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "json without version",
+			content:  `{"name":"test"}`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    `{"name":"test"}`,
+			wantErr: assert.NoError,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			fmt.Println("Running updater test for PackageJson")
+			runUpdaterTest(t, PackageJson, tt)
+		})
+	}
+}