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Robot-Framework框架系统关键字之断言

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# 三个list变量：list_a、list_b、list_c；
@{list_a}    create list    1    a    ${21}    21    12
@{list_b}    set variable    1.0    a    ${21}    21    21
@{list_c}    create list
# 两个scalar变量：string和name
${string}    set variable    taoyi is in hangzhou
${name}    set variable    ty

断言实例

  1. should contain、should not contain、should contain x times
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    should contain    ${list_b}    1.0
    should not contain    ${list_b}    1
    should contain x times    ${list_b}    21    2
    # 变量${list_b}包含对象1.0而不包含对象1，且对象21在变量${lst_b}出现了两次
  2. should be empty、should not be empty
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    should be empty    ${list_c}
    should not be empty    ${list_a}
    # 变量${list_c}没有赋值，所以为空；相反，变量${list_a}有赋初始值，故为非空
  3. should be equal、should not be equal
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    should be equal    ${list_a[1]}    ${list_b[1]}
    should not be equal    ${list_a}    ${list_b}
    # ${list_a[1]}=a，${list_b[1]}=a故两个对象相等;而${list_a}和${list_b}有元素不一致，这两个对象不相等
  4. should be equal as numbers、should not be equal as numbers
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    should be equal as numbers    ${list_b[0]}    1.0000
    should not be equal as number    ${list_b[0]}    1.1
    # ${list_b[0]}=1，忽略精度，故与1.0000相等；而即使是忽略精度，1与1.1还是不相等的
  5. should be equal as integers、should not be equal as integers
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    should be equal as integers    ${list_a[3]}    ${list_b[3]}
    should not be equal as integers    ${list_a[4]}    ${list_b[4]}
    # ${list_a[3]}=21，${list_b[3]}=21，而系统默认为字符串格式的“21”,故需要转化为整数类型，转化为整数后两个对象相等
    # ${list_a[4]}=12，${list_b[4]}=21，即使转化为整数后两个对象依旧是不相等
  6. should be equal as strings、should not be equal as strings
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    should be equal as strings    ${list_a[2]}    ${list_b[2]}
    should not be equal as strings    ${list_a[0]}    ${list_b[0]}
    # ${list_a[2]}=${21}，${list_b[2]}=${21}，而均为数值型的21,故需要转化为字符串类型，转化为字符串后两个对象相等
  7. should be true、should not be true
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    should be true    ${list_a[0]} < 10
    should not be true    ${list_a[0]} < 1
    # ${list_a[0]}=1（字符串类型），其ASCII值比字符串10的ASCII值小
  8. should start with、should not start with
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    should start with    ${string}    tao
    should not start with    ${string}    h
    # ${string}="taoyi is in hangzhou"是以sha开头，而非以h开头
  9. should end with、should not end with
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    should end with    ${string}    hangzhou
    should not end with    ${string}    taoyi
    # ${string}="taoyi is in hangzhou"是以hangzhou结尾，而非以taoyi结尾
  10. should match、should not match
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    should match    ${name}    t?
    should not match    ${string}    h?*
    # 模式匹配和shell中的通配符类似，它区分大小写，'*'匹配0~无穷多个字符，“？”单个字符
    # ${name}=ty,由以t开头的两个字母组成
  11. should match regexp、should not match regexp
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    should match regexp    ${name}    ^\\w{2}$
    should not match regexp    ${name}    ^\\d{2}$
    # 反斜杠在测试数据是转义字符，因此模式中要使用双重转义；'^'和'$'字符可以用来表示字符串的开头和结尾
    # ${name}=ty，是有两个字母--w{2}组成，而不是由两个数字--d{2}组成

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