Commitad616c6

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Merge pull request#9564 from jakevdp/fix-9557

TST: add test of normed histogram with unequal bins

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Original file line number	Diff line number	Diff line change
`@@ -1565,6 +1565,17 @@ def test_hist_step_log_bottom():`
`1565`	`1565`	`ax.set_ylim(9e-3,1e3)`
`1566`	`1566`
`1567`	`1567`
	`1568`	`+deftest_hist_unequal_bins_density():`
	`1569`	`+# Test correct behavior of normalized histogram with unequal bins`
	`1570`	`+# https://github.com/matplotlib/matplotlib/issues/9557`
	`1571`	`+rng=np.random.RandomState(57483)`
	`1572`	`+t=rng.randn(100)`
	`1573`	`+bins= [-3,-1,-0.5,0,1,5]`
	`1574`	`+mpl_heights,_,_=plt.hist(t,bins=bins,density=True)`
	`1575`	`+np_heights,_=np.histogram(t,bins=bins,density=True)`
	`1576`	`+assert_allclose(mpl_heights,np_heights)`
	`1577`	`+`
	`1578`	`+`
`1568`	`1579`	`defcontour_dat():`
`1569`	`1580`	`x=np.linspace(-3,5,150)`
`1570`	`1581`	`y=np.linspace(-3,5,120)`

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