### Question:
CmakeUtils { public static int getToolchainHash(@NonNull NativeToolchainValue toolchainValue) { StringBuilder toolchainString = new StringBuilder(); if (toolchainValue.cppCompilerExecutable != null) { toolchainString = toolchainString .append(toolchainValue.cppCompilerExecutable.getAbsolutePath()) .append(" "); } if (toolchainValue.cCompilerExecutable != null) { toolchainString = toolchainString.append(toolchainValue.cCompilerExecutable.getAbsolutePath()); } return toolchainString.toString().hashCode(); }  @NonNull static Revision getVersion(@NonNull File cmakeInstallPath); @NonNull static Revision getVersion(@NonNull String cmakeVersionString); @NonNull static String getBuildCommand(
            @NonNull File cmakeExecutable, @NonNull File outputFolder, @NonNull String targetName); @NonNull static String getCleanCommand(
            @NonNull File cmakeExecutable, @NonNull File outputFolder); @NonNull static Set<String> getCppExtensionSet(@NonNull CodeModel codeModel); @NonNull static Set<String> getCExtensionSet(CodeModel codeModel); static int getToolchainHash(@NonNull NativeToolchainValue toolchainValue); @Nullable static String getObjectToString(@Nullable ContentType content);  }### Answer:
@Test public void testToolchainHash() { NativeToolchainValue nativeToolchainValue = new NativeToolchainValue(); assertThat(CmakeUtils.getToolchainHash(nativeToolchainValue)).isEqualTo(0); nativeToolchainValue.cppCompilerExecutable = null; nativeToolchainValue.cCompilerExecutable = Mockito.mock(File.class); assertThat(CmakeUtils.getToolchainHash(nativeToolchainValue)).isNotEqualTo(0); nativeToolchainValue.cCompilerExecutable = null; nativeToolchainValue.cppCompilerExecutable = Mockito.mock(File.class); assertThat(CmakeUtils.getToolchainHash(nativeToolchainValue)).isNotEqualTo(0); nativeToolchainValue.cppCompilerExecutable = Mockito.mock(File.class); nativeToolchainValue.cCompilerExecutable = Mockito.mock(File.class); assertThat(CmakeUtils.getToolchainHash(nativeToolchainValue)).isNotEqualTo(0); }