101 lines
3.7 KiB
Python
101 lines
3.7 KiB
Python
import os
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import infra.basetest
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class TestRRDTool(infra.basetest.BRTest):
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config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
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"""
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BR2_PACKAGE_RRDTOOL=y
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BR2_PACKAGE_RRDTOOL_RRDGRAPH=y
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BR2_TARGET_ROOTFS_CPIO=y
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# BR2_TARGET_ROOTFS_TAR is not set
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"""
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def test_run(self):
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cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
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self.emulator.boot(arch="armv5",
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kernel="builtin",
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options=["-initrd", cpio_file])
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self.emulator.login()
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# We check the program can run.
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self.assertRunOk("rrdtool --version")
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# This test sequence is inspired from parts of the RRDTool
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# tutorial:
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# https://oss.oetiker.ch/rrdtool/tut/rrdtutorial.en.html
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rrd_file = "test.rrd"
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data_source = "speed"
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cmd = f"rrdtool create {rrd_file}"
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cmd += " --start 920804400"
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cmd += f" DS:{data_source}:COUNTER:600:U:U"
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cmd += " RRA:AVERAGE:0.5:1:24"
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cmd += " RRA:AVERAGE:0.5:6:10"
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self.assertRunOk(cmd)
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# Some data to fill in our database, from the tutorial page.
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data = [12345, 12357, 12363, 12363, 12363,
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12373, 12383, 12393, 12399, 12405,
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12411, 12415, 12420, 12422, 12423]
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timestamp = 920804700 # timestamp of: Sun Mar 7 12:05:00 PM CET 1999
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# We check we can put our data in the database. We start at
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# our timestamp, then increase by 5 minutes.
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for d in data:
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cmd = f"rrdtool update {rrd_file} {timestamp}:{d}"
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timestamp += 300
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self.assertRunOk(cmd)
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# We check we can read back our data.
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cmd = f"rrdtool fetch {rrd_file}"
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cmd += " AVERAGE --start 920804400 --end 920809200"
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out, ret = self.emulator.run(cmd)
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self.assertEqual(ret, 0)
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self.assertEqual(out[0].strip(), data_source)
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# We check that at time=920805600 we have speed=0.
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data_line = next(ln for ln in out if ln.strip().startswith('920805600:'))
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speed = float(data_line.split(':')[1])
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self.assertAlmostEqual(speed, 0.)
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# We generate a first simple image graph.
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cmd = "rrdtool graph speed.png"
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cmd += " --start 920804400 --end 920808000"
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cmd += f" DEF:myspeed={rrd_file}:{data_source}:AVERAGE"
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cmd += " LINE2:myspeed#FF0000"
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self.assertRunOk(cmd, timeout=20)
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# We check the output file exists and has a size
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# greater than zero.
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self.assertRunOk("test -s speed.png")
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# We generate a slightly more complex graph.
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cmd = "rrdtool graph speed2.png"
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cmd += " --start 920804400 --end 920808000"
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cmd += " --vertical-label m/s"
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cmd += f" DEF:myspeed={rrd_file}:{data_source}:AVERAGE"
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cmd += " CDEF:realspeed=myspeed,1000,\\*"
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cmd += " LINE2:realspeed#FF0000"
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self.assertRunOk(cmd, timeout=20)
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# Again, we check the output file exists.
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self.assertRunOk("test -s speed2.png")
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# Finally, we generate the last graph, with some rules.
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cmd = "rrdtool graph speed3.png"
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cmd += " --start 920804400 --end 920808000"
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cmd += " --vertical-label km/h"
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cmd += f" DEF:myspeed={rrd_file}:{data_source}:AVERAGE"
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cmd += " \"CDEF:kmh=myspeed,3600,*\""
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cmd += " CDEF:fast=kmh,100,GT,kmh,0,IF"
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cmd += " CDEF:good=kmh,100,GT,0,kmh,IF"
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cmd += " HRULE:100#0000FF:\"Maximum allowed\""
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cmd += " AREA:good#00FF00:\"Good speed\""
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cmd += " AREA:fast#FF0000:\"Too fast\""
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self.assertRunOk(cmd, timeout=20)
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# And again, we check the output file exists.
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self.assertRunOk("test -s speed3.png")
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