}

    /* MNG-4193 */
    @Test
    void testValidationErrorUponNonUniquePluginRepositoryId() throws Exception {
        assertThrows(
                ProjectBuildingException.class,
                () -> buildPom("unique-repo-id/plugin-repo"),
                "Non-unique repository ids did not cause validation error");
    }

    /* MNG-4193 */

    /**
     * The different severity levels for a problem, in decreasing order.
     *
     * @since 4.0.0
     */
    @Experimental
    enum Severity {
        FATAL, //
        ERROR, //
        WARNING //
    }

        List<Toolchain> toolchains = toolchainManager.getToolchains(session, "unknown", null);

        assertEquals(0, toolchains.size());
        verify(logger).error("Missing toolchain factory for type: unknown. Possibly caused by misconfigured project.");
    }

    @Test
    void testModelAndFactory() {
        MavenSession session = mock(MavenSession.class);

        IOException ioEx = new IOException("Unable to establish loopback connection", connEx);
        MojoExecutionException mojoEx =
                new MojoExecutionException("Error executing Jetty: Unable to establish loopback connection", ioEx);

        ExceptionHandler exceptionHandler = new DefaultExceptionHandler();
        ExceptionSummary exceptionSummary = exceptionHandler.handleException(mojoEx);

         * the way 2.x works. When we're in strict mode, the removal of duplicates just saves other merging steps from
         * aftereffects and bogus error messages.
         */
        List<Dependency> dependencies = model.getDependencies();
        Map<String, Dependency> normalized = new LinkedHashMap<>(dependencies.size() * 2);

        }

        String version = context.getSystemProperties().get("java.version");

        if (version == null || version.isEmpty()) {
            problems.add(
                    BuilderProblem.Severity.ERROR,
                    ModelProblem.Version.BASE,
                    "Failed to determine Java version for profile " + profile.getId(),
                    activation.getLocation("jdk"));
            return false;
        }

            plugin.setArtifactId(tok[1]);
            plugin.setVersion(tok[2]);
            goal = tok[3];

            // This won't be valid, but it constructs something easy to read in the error message
            for (int idx = 4; idx < tok.length; idx++) {
                goal += ":" + tok[idx];
            }
        } else if (numTokens == 3) {

     *
     * @param path directory or JAR file to test
     * @param resolve whether the module names are requested. If false, null values may be used instead
     * @throws IOException if an error occurred while reading the JAR file or the module descriptor
     */
    PathModularization(Path path, boolean resolve) throws IOException {
        if (Files.isDirectory(path)) {
            /*

                    try {
                        c = interpolator.interpolate(value, recursionInterceptor);
                    } catch (InterpolationException e) {
                        problems.add(BuilderProblem.Severity.ERROR, ModelProblem.Version.BASE, e.getMessage(), e);
                    }
                    cache.put(value, c);
                }
                return c;
            }
            return value;
        };

public abstract void info(String, Throwable); public abstract boolean isInfoEnabled(); public abstract void warn(String); public abstract void warn(String, Throwable); public abstract boolean isWarnEnabled(); public abstract void error(String); public abstract void error(String, Throwable); public abstract boolean isErrorEnabled(); public abstract void fatalError(String); public abstract void fatalError(String, Throwable); public abstract boolean isFatalErrorEnabled(); public abstract Logger getChildLogger(String);...