Assertions

GoConvey comes with a lot of standard assertions you can use with So().

General Equality

So(thing1, ShouldEqual, thing2)
So(thing1, ShouldNotEqual, thing2)
So(thing1, ShouldResemble, thing2)		// a deep equals for arrays and structs
So(thing1, ShouldNotResemble, thing2)
So(thing1, ShouldPointTo, thing2)
So(thing1, ShouldNotPointTo, thing2)
So(thing1, ShouldBeNil)
So(thing1, ShouldNotBeNil)
So(thing1, ShouldBeTrue)
So(thing1, ShouldBeFalse)
So(thing1, ShouldBeZeroValue)

Numeric Quantity comparison

So(1, ShouldBeGreaterThan, 0)
So(1, ShouldBeGreaterThanOrEqualTo, 0)
So(1, ShouldBeLessThan, 2)
So(1, ShouldBeLessThanOrEqualTo, 2)
So(1.1, ShouldBeBetween, .8, 1.2)
So(1.1, ShouldNotBeBetween, 2, 3)
So(1.1, ShouldBeBetweenOrEqual, .9, 1.1)
So(1.1, ShouldNotBeBetweenOrEqual, 1000, 2000)
So(1.0, ShouldAlmostEqual, 0.99999999, .0001)   // tolerance is optional; default 0.0000000001
So(1.0, ShouldNotAlmostEqual, 0.9, .0001)

Collections

So([]int{2, 4, 6}, ShouldContain, 4)
So([]int{2, 4, 6}, ShouldNotContain, 5)
So(4, ShouldBeIn, ...[]int{2, 4, 6})
So(4, ShouldNotBeIn, ...[]int{1, 3, 5})
So([]int{}, ShouldBeEmpty)
So([]int{1}, ShouldNotBeEmpty)

Strings

So("asdf", ShouldStartWith, "as")
So("asdf", ShouldNotStartWith, "df")
So("asdf", ShouldEndWith, "df")
So("asdf", ShouldNotEndWith, "df")
So("asdf", ShouldContainSubstring, "sd")		// optional 'expected occurences' arguments?
So("asdf", ShouldNotContainSubstring, "er")
So("adsf", ShouldBeBlank)
So("asdf", ShouldNotBeBlank)

panic

    // See https://github.com/smartystreets/goconvey/issues/108
So(func(), ShouldPanic)
So(func(), ShouldNotPanic)
So(func(), ShouldPanicWith, "")		// or errors.New("something")
So(func(), ShouldNotPanicWith, "")	// or errors.New("something")

Type checking

So(1, ShouldHaveSameTypeAs, 0)
So(1, ShouldNotHaveSameTypeAs, "asdf")

time.Time (and time.Duration)

So(time.Now(), ShouldHappenBefore, time.Now())
So(time.Now(), ShouldHappenOnOrBefore, time.Now())
So(time.Now(), ShouldHappenAfter, time.Now())
So(time.Now(), ShouldHappenOnOrAfter, time.Now())
So(time.Now(), ShouldHappenBetween, time.Now(), time.Now())
So(time.Now(), ShouldHappenOnOrBetween, time.Now(), time.Now())
So(time.Now(), ShouldNotHappenOnOrBetween, time.Now(), time.Now())
So(time.New(), ShouldHappenWithin, duration, time.Now())
So(time.New(), ShouldNotHappenWithin, duration, time.Now())

Thanks to github.com/jacobsa for his excellent oglematchers library, which is what many of these methods make use of to do their jobs.

Next

Next up, learn about building your own assertions.