gin-top:-.25rem!important}.mr-n1,.mx-n1{margin-right:-.25rem!important}.mb-n1,.my-n1{margin-bottom:-.25rem!important}.ml-n1,.mx-n1{margin-left:-.25rem!important}.m-n2{margin:-.5rem!important}.mt-n2,.my-n2{margin-top:-.5rem!important}.mr-n2,.mx-n2{margin-right:-.5rem!important}.mb-n2,.my-n2{margin-bottom:-.5rem!important}.ml-n2,.mx-n2{margin-left:-.5rem!important}.m-n3{margin:-1rem!important}.mt-n3,.my-n3{margin-top:-1rem!important}.mr-n3,.mx-n3{margin-right:-1rem!important}.mb-n3,.my-n3{margin-b...

!important;\n}\n\n.mb-n1,\n.my-n1 {\n  margin-bottom: -0.25rem !important;\n}\n\n.ml-n1,\n.mx-n1 {\n  margin-left: -0.25rem !important;\n}\n\n.m-n2 {\n  margin: -0.5rem !important;\n}\n\n.mt-n2,\n.my-n2 {\n  margin-top: -0.5rem !important;\n}\n\n.mr-n2,\n.mx-n2 {\n  margin-right: -0.5rem !important;\n}\n\n.mb-n2,\n.my-n2 {\n  margin-bottom: -0.5rem !important;\n}\n\n.ml-n2,\n.mx-n2 {\n  margin-left: -0.5rem !important;\n}\n\n.m-n3 {\n  margin: -1rem !important;\n}\n\n.mt-n3,\n.my-n3 {\n  margin-top: -1rem !imp...

	if n != 10 || err != nil {
		t.Fatalf("Write returned (%v, %v), want (10, nil)", n, err)
	}

	// Use ReadFrom to read in some data.
	n2, err := w.ReadFrom(strings.NewReader("abcdef"))
	if n2 != 6 || err != nil {
		t.Fatalf("ReadFrom returned (%v, %v), want (6, nil)", n2, err)
	}
}

type emptyThenNonEmptyReader struct {
	r io.Reader
	n int
}

gin-top:-.25rem!important}.mr-n1,.mx-n1{margin-right:-.25rem!important}.mb-n1,.my-n1{margin-bottom:-.25rem!important}.ml-n1,.mx-n1{margin-left:-.25rem!important}.m-n2{margin:-.5rem!important}.mt-n2,.my-n2{margin-top:-.5rem!important}.mr-n2,.mx-n2{margin-right:-.5rem!important}.mb-n2,.my-n2{margin-bottom:-.5rem!important}.ml-n2,.mx-n2{margin-left:-.5rem!important}.m-n3{margin:-1rem!important}.mt-n3,.my-n3{margin-top:-1rem!important}.mr-n3,.mx-n3{margin-right:-1rem!important}.mb-n3,.my-n3{margin-b...

!important;\n}\n\n.mb-n1,\n.my-n1 {\n  margin-bottom: -0.25rem !important;\n}\n\n.ml-n1,\n.mx-n1 {\n  margin-left: -0.25rem !important;\n}\n\n.m-n2 {\n  margin: -0.5rem !important;\n}\n\n.mt-n2,\n.my-n2 {\n  margin-top: -0.5rem !important;\n}\n\n.mr-n2,\n.mx-n2 {\n  margin-right: -0.5rem !important;\n}\n\n.mb-n2,\n.my-n2 {\n  margin-bottom: -0.5rem !important;\n}\n\n.ml-n2,\n.mx-n2 {\n  margin-left: -0.5rem !important;\n}\n\n.m-n3 {\n  margin: -1rem !important;\n}\n\n.mt-n3,\n.my-n3 {\n  margin-top: -1rem !imp...