Allow ignoring go list errors (#577)

Author: yahavi

build-info-extractor-go/src/main/java/org/jfrog/build/extractor/go/GoDriver.java

@@ -83,8 +83,11 @@ public void modTidy(boolean prompt) throws IOException {
         runCmd(GO_MOD_TIDY_CMD, prompt);
     }
 
-    public CommandResults getUsedModules(boolean prompt) throws IOException {
+    public CommandResults getUsedModules(boolean prompt, boolean ignoreErrors) throws IOException {
         List<String> argsList = new ArrayList<>(GO_LIST_USED_MODULES_CMD);
+        if (ignoreErrors) {
+            argsList.add(1, "-e");
+        }
         return runCmd(argsList, prompt);
     }
 

build-info-extractor-go/src/test/java/org/jfrog/build/extractor/go/GoDriverTest.java

@@ -35,11 +35,20 @@ public void testListUsedModules() throws IOException {
             FileUtils.copyDirectory(PROJECT_ORIGIN.toFile(), projectDir);
             GoDriver driver = new GoDriver(null, System.getenv(), projectDir, new NullLog());
             driver.modTidy(false);
-            CommandResults results = driver.getUsedModules(false);
+
+            // Run "go list -f {{with .Module}}{{.Path}} {{.Version}}{{end}} all"
+            CommandResults results = driver.getUsedModules(false, false);
             Set<String> actualUsedModules = Arrays.stream(results.getRes().split("\\r?\\n"))
                     .map(String::trim)
                     .collect(Collectors.toSet());
             assertEquals(actualUsedModules, EXPECTED_USED_MODULES);
+
+            // Run "go list -e -f {{with .Module}}{{.Path}} {{.Version}}{{end}} all"
+            results = driver.getUsedModules(false, true);
+            actualUsedModules = Arrays.stream(results.getRes().split("\\r?\\n"))
+                    .map(String::trim)
+                    .collect(Collectors.toSet());
+            assertEquals(actualUsedModules, EXPECTED_USED_MODULES);
         } finally {
             FileUtils.deleteDirectory(projectDir);
         }