Expand Gotlin language and tooling

internal/lang/external_struct_test.go

@@ -0,0 +1,62 @@
+package lang
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestGenerateExternalGoStructConstruction(t *testing.T) {
+	prog, err := Parse(`package demo
+import platform "example/platform"
+fun create(issuer: String, audience: String, jwksUrl: String): *platform.Authorizer {
+    return platform.Authorizer(issuer = issuer, audience = audience, jwksUrl = jwksUrl)
+}`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	out, err := GenerateGo(prog)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := `&platform.Authorizer{Issuer: issuer, Audience: audience, JWKSURL: jwksUrl}`
+	if !strings.Contains(string(out), want) {
+		t.Fatalf("missing %q:\n%s", want, out)
+	}
+}
+
+func TestGenerateEmbeddedValue(t *testing.T) {
+	prog, err := Parse(`package demo
+import embed
+@embed("assets/*") val assets: embed.FS
+fun main() { println(assets) }`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	out, err := GenerateGo(prog)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, want := range []string{`"embed"`, `//go:embed assets/*`, `var assets embed.FS`} {
+		if !strings.Contains(string(out), want) {
+			t.Fatalf("missing %q:\n%s", want, out)
+		}
+	}
+}
+
+func TestGenerateEmbeddedStringAddsBlankImport(t *testing.T) {
+	prog, err := Parse(`package demo
+@embed("schema.sql") val schema: String
+fun main() { println(schema) }`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	out, err := GenerateGo(prog)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, want := range []string{`_ "embed"`, `//go:embed schema.sql`, `var schema string`} {
+		if !strings.Contains(string(out), want) {
+			t.Fatalf("missing %q:\n%s", want, out)
+		}
+	}
+}