project.testComponent.binaries.size() == 1
        def testBinary = project.testComponent.binaries[0]
        testBinary instanceof CppExecutable
        testBinary.name == 'testExecutable'
        testBinary.variantName == 'debug'
        testBinary.baseName == 'coreTest'
        testBinary.compilationDetails.sources.sourceFile as Set == [src1, src2] as Set
        testBinary.compilationDetails.headerDirs == [headerDir] as Set

		}
		if pxtestNeedsPtest {
			pxtest.Internal.Imports = append(pxtest.Internal.Imports, ptest)
		}
	}

	// Arrange for testing.Testing to report true.
	ldflags := append(p.Internal.Ldflags, "-X", "testing.testBinary=1")
	gccgoflags := append(p.Internal.Gccgoflags, "-Wl,--defsym,testing.gccgoTestBinary=1")

	// Build main package.
	pmain = &Package{
		PackagePublic: PackagePublic{
			Name:       "main",