Compiler test now holds output from compiler until end

compiler/compiler_test.go

@@ -1,6 +1,5 @@
 package compiler
 
-import "os"
 import "io/fs"
 import "embed"
 import "strings"
@@ -25,8 +24,12 @@ func testUnit (
 	temp := test.TempDir()
 
 	// instantiate and configure the compiler
+	compOutputBuilder := new(strings.Builder)
+	defer func () {
+		test.Log("compiler log:\n" + compOutputBuilder.String())
+	} ()
 	comp := new(Compiler)
-	comp.Writer   = os.Stderr
+	comp.Writer   = compOutputBuilder
 	comp.Resolver = NewResolver (
 		"/usr/local/src/fspl",
 		"/usr/src/fspl",
@@ -51,8 +54,8 @@ func testUnit (
 		comp.Output,
 		"-o",
 		executablePath)...)
-	linkCommand.Stdout = os.Stderr
-	linkCommand.Stderr = os.Stderr
+	linkCommand.Stdout = compOutputBuilder
+	linkCommand.Stderr = compOutputBuilder
 	test.Log("running link command: ", linkCommand)
 	err = linkCommand.Run()
 	if err != nil {
@@ -105,7 +108,6 @@ func TestEmbedOk (test *testing.T) {
 func TestHelloWorld (test *testing.T) {
 testUnit (test,
 "/test-data/data/hello", nil,
-"",
-"Hello, world!\n",
+"", "Hello, world!\n",
 0,
 )}