Add support for package.json #200

Signed-off-by: Toure Dunnon <toure.dunnon@anchore.com>

syft/cataloger/javascript/parse_package_json_test.go

@@ -0,0 +1,43 @@
+package javascript
+
+import (
+	"os"
+	"testing"
+
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/go-test/deep"
+)
+
+func TestParsePackageJSON(t *testing.T) {
+	expected := pkg.Package{
+		Name:     "npm",
+		Version:  "6.14.6",
+		Type:     pkg.NpmPkg,
+		Licenses: []string{"Artistic-2.0"},
+		Language: pkg.JavaScript,
+		Metadata: pkg.NpmMetadata{
+			Author:   "Isaac Z. Schlueter <i@izs.me> (http://blog.izs.me)",
+			Homepage: "https://docs.npmjs.com/",
+		},
+	}
+	fixture, err := os.Open("test-fixtures/pkg-json/package.json")
+	if err != nil {
+		t.Fatalf("failed to open fixture: %+v", err)
+	}
+
+	actual, err := parsePackageJSON(fixture.Name(), fixture)
+	if err != nil {
+		t.Fatalf("failed to parse package-lock.json: %+v", err)
+	}
+	if len(actual) != 1 {
+		for _, a := range actual {
+			t.Log("   ", a)
+		}
+		t.Fatalf("unexpected package count: %d!=1", len(actual))
+	}
+
+	for _, d := range deep.Equal(actual[0], expected) {
+		t.Errorf("diff: %+v", d)
+	}
+
+}